Bitcoin Json Rpc Server - Error rpcerror bitcoin json-rpc ...

Groestlcoin 6th Anniversary Release

Introduction

Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.

UPDATED - Groestlcoin Core 2.18.2

This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables.
NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.

How to Upgrade?

Windows
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
OSX
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.
Ubuntu
http://groestlcoin.org/forum/index.php?topic=441.0

Other Linux

http://groestlcoin.org/forum/index.php?topic=97.0

Download

Download the Windows Installer (64 bit) here
Download the Windows Installer (32 bit) here
Download the Windows binaries (64 bit) here
Download the Windows binaries (32 bit) here
Download the OSX Installer here
Download the OSX binaries here
Download the Linux binaries (64 bit) here
Download the Linux binaries (32 bit) here
Download the ARM Linux binaries (64 bit) here
Download the ARM Linux binaries (32 bit) here

Source

ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.

Features

Download

iOS
Android

Source

ALL NEW! – HODL GRS Android Wallet

HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.

Features

Download

Main Release (Main Net)
Testnet Release

Source

ALL NEW! – GroestlcoinSeed Savior

Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.

Features

Live Version (Not Recommended)

https://www.groestlcoin.org/recovery/

Download

https://github.com/Groestlcoin/mnemonic-recovery/archive/master.zip

Source

ALL NEW! – Vanity Search Vanity Address Generator

NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).

Features

Usage

https://github.com/Groestlcoin/VanitySearch#usage

Download

Source

ALL NEW! – Groestlcoin EasyVanity 2020

Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).

Features

Download

Source

Remastered! – Groestlcoin WPF Desktop Wallet (v2.19.0.18)

Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.

Features

Remastered Improvements

Download

Source

ALL NEW! – BIP39 Key Tool

Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.

Features

Download

Windows
Linux :
 pip3 install -r requirements.txt python3 bip39\_gui.py 

Source

ALL NEW! – Electrum Personal Server

Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.

Features

Download

Windows
Linux / OSX (Instructions)

Source

UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets).
Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Groestlcoin September 2019 Development Release/Update!

For a more interactive view of changes, click here
In our current world; bordering on financial chaos, with tariff wars, Brexit and hyperinflation rife, you can count on Groestlcoin to consistently produce innovation that strikes to take the power away from the few and into the many, even after a full five and a half years of solid development.
Here is what the team has already announced in the last 3 months since the last development update:

What's Being Released Today?

Groestl Nodes

What am I?

Groestl Nodes aims to map out and compare the status of the Groestlcoin mainnet and testnet networks. Even though these networks share the same protocol, there is currently no way to directly compare these coins in a single location. These statistics are essential to evaluate the relative health of both networks.

Features

Source - Website

Groestlcoin Transaction Tool

What am I?

This is a tool for creating unsigned raw Groestlcoin transactions and also to verify existing transactions by entering in the transaction hex and converting this to a human-readable format to verify that a transaction is correct before it is signed.

Features

SourceDownload

Groestlcoin AGCore

What am I?

AGCore is an Android app designed to make it easier to run a Groestlcoin Core node on always-on Android appliances such as set-top boxes, Android TVs and repurposed tablets/phones. If you are a non-technical user of Groestlcoin and want an Android app that makes it easy to run a Groestlcoin Core node by acting as a wrapper, then AG Core is the right choice for you.

What's Changed?

Source - Download

Groestlcoin Electrum

What's Changed?

Android Electrum-Specific

OSXWindowsWindows StandaloneWindows PortableLinux - Android
Server SourceServer Installer SourceClient SourceIcon SourceLocale Source

Android Wallet – Including Android Wallet Testnet

What am I?

Android Wallet is a BIP-0032 compatible hierarchial deterministic Groestlcoin Wallet, allowing you to send and receive Groestlcoin via QR codes and URI links.

V7.11.1 Changes

Groestlcoin Java Library SourceSource - DownloadTestnet Download

Groestlwallet

What am I?

Groestlwallet is designed to protect you from malware, browser security holes, even physical theft. With AES hardware encryption, app sandboxing, keychain and code signatures, groestlwallet represents a significant security advance over web and desktop wallets, and other mobile platforms.
Simplicity is groestlwallet's core design principle. Because groestlwallet is "deterministic", your balance and entire transaction history can be restored from just your recovery phrase.

iOS 0.7.3 Changes

Android v89 Changes

iOS SourceAndroid Source - Android DownloadiOS Download

Groestlcoinomi Released

What am I?

Groestlcoinomi is a lightweight thin-client Groestlcoin wallet based on a client-server protocol.

Groestlcoinomi v1.1 Desktop Changes

Groestlcoinomi Android v1.6 Changes

Groestlcoin Java Library SourceAndroid Source
Android DownloadWindows DownloadMac OS DownloadLinux Download

Groestlcoin BIP39 Tool

What's Changed?

Source - Download
submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Ravencoin Open Developer Meeting - 1/4/2019

[14:04] Hi everyone! [14:04] :dabbitwave: [14:04] Hey Everybody! [14:04] Hello 😃 [14:04] Sorry we're getting started a bit late. [14:04] Topics: SLC Meetup (March 15th) [14:04] 👋 [14:04] Roadmap breakdown - posted to github [14:05] IPFS (integration) [14:05] greetings 👋 [14:05] So, SLC Meetup on the 15th! [14:05] Great! [14:05] Hi! [14:06] Hi all — a special thanks to the developers and congratulations on an amazing first year!!! # [14:06] <[Dev] Blondfrogs> Hello Everyone! [14:07] We have a tentative agenda with @Tron , @corby speaking. [14:08] We would like to have nice walkthrough of the Raven DevKit for the meetup. [14:08] We are planning on hosting a meetup in SLC at the Overstock building on March 15th from 6:00pm-9:00pm. It is free admission, but there is a page on meetup.com where people can rsvp so that we have a somewhat accurate headcount for food. [14:08] sup guys [14:08] hey russ [14:09] We are planning on having a few speakers and have allotted a bit of time at the end for people to meet and greet each other. [14:09] can you guys link us to the page somewhere when thats available? 😄 [14:10] free food?! [14:10] todays topic? [14:10] yeah can we indicate pepperoni pizza [14:10] Sounds good to me @Jeroz Nothing ordered yet though. 😃 [14:10] only pepperoni pizza is served at true blockchain meetings right [14:10] :blobhide: [14:10] Absolutely. The itinerary just needs to be finalized and then I'll make a broad post about the rest of the details. [14:11] https://www.meetup.com/Salt-Lake-City-salt-lake-city-Meetup/ [14:11] 😭 so far away [14:11] West Coast! [14:11] @MTarget But there's pizza, so worth the travel time. [14:11] lol [14:12] I'll be watching the stream if its available since i'm from montreal/canada 😛 [14:12] Ah yes, I love $300 pizza 😉 [14:12] as long as I get to see your smiling faces @Tron @RavencoinDev then it's worth the time [14:12] We'll be there. [14:12] We'll be messaging additional details as they get finalized. [14:12] Greeting and salutations! [14:12] sup [14:13] Hey, $300 is considerably cheaper than 2 $3,700,000 pizzas. [14:14] Ok, switching topics... [14:14] yeah its a way to fly, [14:14] question is whether those piza's will be paid for in RVN coin or not :ThinkBlack: [14:14] Roadmap [14:14] It hasn't changed, just added some detail. [14:14] https://github.com/RavenProject/Ravencoin/tree/masteroadmap [14:15] nice [14:15] This now links to a breakdown for messaging, voting, anti-spam, and rewards (dividends) [14:15] will there be any additional RPC functionality coming in the future, thinking in terms of some functions that are only available in ravencore-lib [14:15] apologies if now is not time to ask questions, i can wait for later [14:15] "Phase 7 - Compatibility Mode" - that's new 😮 [14:15] The protocol for messaging is pretty well established, but the rest isn't in stone (code) yet. [14:16] can you give us details on compatibility mode? [14:16] In broad brush strokes. [14:17] The idea is to allow ravend to act as a daemon that looks like a single coin. [14:17] so ravend that only works with the bitcoin asset? [14:18] interesting [14:19] So you start it with an option to only work with a single asset/token account or something? [14:19] hmm compelling what is the reason for this? some kind of scale or performance? [14:19] ^ [14:19] Example: Configure ravend to listen for transfer RPC call for senttoaddress or sendfrom, but for a specific asset. This would allow easy integration into existing system for assets. [14:20] Only the daemon or the whole wallet UI? [14:20] yeah thats great, rpc functions dont allow us to do this yet, if i recall [14:20] or at least we depend more on ravencore lib [14:20] so like asset zmq [14:20] that's smart [14:20] @Tron it also sounds like it makes our life easier working with RPC, instead of core all the time for some functionality [14:21] if i understand correctly anyways [14:21] So you could run numerous instances of ravend each on their own network and RPC port, each configured for a different asset. You would need some balance of RVN in each one to cover transaction fees, then. [14:21] id be curious to know what all the advantages are of this [14:21] one more question, how would i decentralize the gateway between bitcoin mainnet/ravencoin mainnet? in the current RSK implementation they use a federated gateway, how would we avoid this? [14:21] it sounds neato [14:21] Just the daemon. The alternative is to get exchanges to adapt to our RPC calls for assets. It is easier if it just looks like Bitcoin, Litecoin or RVN to them, but it is really transferring FREE_HUGS [14:22] That makes sense. Should further increased exchange adoption for each asset. [14:22] hmm yeah its just easier for wallet integration because its basically the same as rvn and bitcoin but for a specific asset [14:22] so this is in specific mind of exchange listings for assets i guess [14:23] if i understand rightly [14:23] @traysi Gut feel is to allow ravend to handle a few different assets on different threads. [14:23] Are you going to call it kawmeleon mode? [14:23] Lol [14:23] I read that as kaw-melon mode. [14:24] same lol [14:24] so in one single swoop it possible to create a specific wallet and server daemon for specific assets. great. this makes it easier for exchanges, and has some added advantages with processing data too right? [14:24] Still keeping a RVN balance in the wallet, as well, Tron. How will that work is sendtoaddress sends the token instead of the RVN? A receive-RVN/send tokens-only wallet? [14:25] @traysi Yes [14:25] sendtoaddress on the other port (non RVN port) would send the asset. [14:25] This will be a hugely useful feature. [14:25] ^ [14:26] @Tron currently rpc function not support getaddresses senttowallet and this has to be done in ravencore lib, will this change you propose improve this situation [14:26] Config might look like {"port":2222, "asset":"FREE_HUGS", "rpcuser":"hugger", "rpcpass":"gi3afja33"} [14:26] how will this work cross-chain? [14:28] @push We'd have to go through the rpc calls and work out which ones are supported in compatibility mode. Obviously the mining ones don't apply. And some are generic like getinfo. [14:28] ok cool 👍 cheers [14:29] for now we continue using ravencore lib for our plans to keep track i just wondering if better way [14:29] as we had some issue after realising no rpc function for getting addresses of people who had sent rvn [14:29] @push | ravenland.org all of the node explorer and ravencore-lib functionality is based on RPC (including the addressindex-related calls). Nothing you can't do with RPC, although I'm not sure of the use cases you're referring to.. [14:29] interesting, so ravencore lib is using getrawtransaction somehow [14:29] i thought this may be the case [14:29] that is very useful thankyou for sharing this [14:30] look into addressindex flag and related RPC calls for functions that operate on addresses outside your wallet [14:30] thank you that is very useful, tbh i am not very skilled programmer so just decoding the hex at the raven-cli commandline was a challenge, i shall look more into this, valued information thanks as this was a big ? for us [14:31] Ok, things have gone quiet. New topic. [14:31] IPFS (integration) [14:31] GO [14:33] ... [14:33] <[Dev] Blondfrogs> So, we have been adding ipfs integration into the wallet for messaging. This will allow the wallets to do some pretty sweet stuff. For instance, you will be able to create your ipfs data file for issuing an asset. Push it to ipfs from the wallet, and add the hash right into the issuance data. This is going to allow for a much more seamless flow into the app. [14:34] <[Dev] Blondfrogs> This ofcourse, will also allow for users to create messages, and post them on ipfs and be able to easily and quickly format and send messages out on the network with ipfs data. [14:34] It will also allow optional meta-data with each transaction that goes in IPFS. [14:34] will i be able to view ipfs images natively in the wallet? [14:34] <[Dev] Blondfrogs> Images no [14:34] We discussed the option to disable all IPFS integration also. [14:35] @russ (kb: russkidooski) Probably not. There's some risk to being an image viewer for ANY data. [14:35] No option in wallet to opt into image viewing? [14:35] cool so drag and drop ipfs , if someone wanted to attach an object like an image or a file they could drag drop into ui and it create hash and attach string to transaction command parameters automatically [14:35] We could probably provide a link -- with a warning. [14:35] nomore going to globalupload.io [14:35] :ThinkBlack: [14:35] I understand that the wallet will rely on globalupload.io. (phase 1). Is it not dangerous to rely on an external network? Or am I missing something? [14:36] hmm [14:36] interesting, i suppose you could hash at two different endpoints and compare them [14:36] if you were that worried [14:36] and only submit one to the chain [14:36] You will be able to configure a URL that will be used as an IPFS browser. [14:36] Oh ic [14:36] you wont flood ipfs because only one hash per unique file [14:36] <[Dev] Blondfrogs> There are multiple options for ipfs integration. We are building it so you can run your own ipfs node locally. [14:36] <[Dev] Blondfrogs> or, point it to whatever service you would like. e.g. cloudflare [14:36] this is very cool developments, great to see this [14:37] Just like the external block explorer link currently in preferences. [14:37] @[Dev] Blondfrogs what about a native ipfs swarm for ravencoin only? [14:37] We have discussed that as an option. [14:37] @push | ravenland.org Considering having a fallback of upload through globalupload.io and download through cloudflare. [14:37] <[Dev] Blondfrogs> @russ (kb: russkidooski) We talked about that, but no decisions have been made yet. [14:37] yeah, i would just use two endpoints and strcompare the hash [14:37] as long as they agree good [14:37] submit tran [14:38] else 'potentially mysterious activity' [14:38] ? [14:38] if you submitted the file to ipfs api endpoints [14:38] Will the metadata just be a form with text only fields? [14:39] and then you would get 2 hashes, from 2 independent services [14:39] that way you would not be relying on a central hash service [14:39] and have some means of checking if a returned hash value was intercepted or transformed [14:39] i was answering jeroz' question [14:40] about relying on a single api endpoint for upload ipfs object [14:40] We have also kicked around the idea of hosting our own JSON only IPFS upload/browse service. [14:41] I have a service like this that is simple using php [14:41] we only use it for images right now [14:41] but fairly easy to do [14:41] Yup [14:42] Further questions about IPFS? [14:43] contract handling? file attach handling? or just text fields to generate json? [14:44] trying to get an idea of what the wallet will offer for attaching data [14:44] Probably just text fields that meet the meta-data spec. [14:44] ok noted [14:44] What do you mean by contract handling @sull [14:45] We won't prevent other hashes from being added. [14:45] asset contract (pdf etc) hash etc [14:45] <[Dev] Blondfrogs> also, being able to load from a file [14:45] got it, thanks [14:47] Let's do some general Q&A [14:48] Maybe just a heads up or something to look for in the future but as of right now, it takes roughly 12 hours to sync up the Qt-wallet from scratch. Did a clean installation on my linux PC last night. [14:48] Any plans or discussions related to lack of privacy of asset transfers and the ability to front run when sending to an exchange? [14:48] ^ [14:48] Is there a way to apply to help moderate for example the Telegram / Discord, i spend alot of time on both places, sometimes i pm mods if needed. [14:49] Any developed plans for Asset TX fee adjustment? [14:49] also this^ [14:49] @mxL86 We just created a card on the public board to look into that. [14:49] General remark: https://raven.wiki/wiki/Development#Phase_7_-_Compatible_Mode = updated reflecting Tron's explanation. [14:49] @mxL86 That's a great question. We need to do some profiling and speed it up. I do know that the fix we added from Bitcoin (that saved our bacon) slowed things down. [14:50] Adding to @mxL86 the sync times substantially increased coinciding with the asset layer activation. Please run some internal benchmarks and see where the daemon is wasting all its cycles on each block. We should be able to handle dozens per second but it takes a couple seconds per block. [14:50] @BW__ no plans currently for zk proofs or anything if that's what you're asking [14:50] You are doing a great job. Is there a plan that all this things (IPFS) could be some day implemented in mobile wallet? Or just in QT? [14:50] i notice also that asset transactions had some effect on sync time as we were making a few. Some spikes i not analysed the io and cpu activity properly but will if there is interest [14:51] we are testing some stuff so run into things i am happy to share [14:51] @BW__ Might look at Grin and Beam to see if we can integrate Mimble Wimble -- down the road. [14:51] yeees [14:51] @J. | ravenland.org work with the telegram mods. Not something the developers handle. [14:51] i love you [14:51] @J. | ravenland.org That would be best brought up with the operators/mods of teh telegram channel. [14:51] @corby @Tron thnx [14:51] @S1LVA | GetRavencoin.org we're planning on bumping fees to... something higher! [14:51] no catastrophic failures, just some transaction too smals, and mempool issues so far, still learning [14:52] @corby i thought that this may happen :ThinkBlack: [14:52] @corby x10? 100x? 1000x? Ballpark? [14:52] Definitely ballpark. [14:52] 😃 [14:52] 😂 [14:52] Is a ballpark like a googolplex? [14:53] @push | ravenland.org asset transactions are definitely more expensive to sync [14:53] yes yes they are [14:53] they are also more expensive to make i believe [14:53] 10,000x! [14:53] as some sync process seems to occur before they are done [14:53] @traysi ★★★★★ thanks for the suggestions we are going to be looking at optimizations [14:53] But, it is way slower than we like. Going to look into it. [14:53] i do not understand fully its operation [14:53] 1000x at minimum in my opinion [14:53] its too easy to spam the network [14:54] yes there has been some reports of ahem spam lately [14:54] :blobhide: [14:54] 😉 [14:54] cough cough ravenland [14:54] @russ (kb: russkidooski) we're in agreement -- it's too low [14:54] default fee 0.001 [14:54] ^ something around here [14:54] @corby yep we all are i think [14:55] waaay too low [14:55] meaningful transactions start with meaningful capital expense [14:55] though there is another scenario , there are some larger volume, more objective rich use cases of the chain that would suffer considerably from that [14:55] just worth mentioning, as i have beeen thinking about this a lot [14:55] there are some way around, like i could add 1000 ipfs hashes to a single unique entity, i tested this and it does work [14:56] @russ (kb: russkidooski) What would you suggest. [14:57] I had a PR for fee increase and push back. [14:57] Ignore the push back. 0.001 RVN is not even a micro-farthing in fiat terms [14:57] definitely around 1000x [14:57] Vocal minority for sure [14:57] ^ yep [14:57] @russ (kb: russkidooski) That sounds reasonable. [14:57] Couple hundred Fentons [14:58] right now an asset transaction is 0.01 of a penny essentially [14:58] 1 RVN would work now, but not when RVN is over $1. [14:58] yes exactly [14:58] Hi. Late to the party. [14:58] We are also talking about a min fee. The system will auto-adapt if blocks fill up. [14:58] im thinking tron, some heavy transaction use cases would fall out of utility use if that happened [14:58] so whats the thinking there [14:59] is there a way around the problem, bulked ipfs hash transactions? [14:59] 1000x would put us around btc levels [14:59] maybe a minimum 500x? [14:59] @russ (kb: russkidooski) Agreed. [14:59] <[Dev] Blondfrogs> It is time to wrap it up here. Everyone. Thank you all for your questions and thoughts. We will be back in 2 weeks. 😃 [14:59] Small increase and review. [14:59] Thanks all! [14:59] Cheers. [15:00] yeah sorry for 1 million questions guys hope i didnt take up too much time [15:00] cheers all 👍 [15:00] Thanks everyone [15:00] Thanks everyone for participating!!! [15:00] That is what we are here for [15:00] 100x-500x increase, 1000x maximum [15:00] 🍺

submitted by Chatturga to Ravencoin [link] [comments]

Gridcoin Developer Update May 7th, 2018

Hello everyone and welcome to another Developer Update from the Gridcoin team. I'd like to remind everyone that these posts will be created every two weeks unless a wallet update is pending that week.
 
The last two weeks have largely been spent preparing for the next leisure release. The release would have come sooner, but some last minute additions to the staging branch were pulled in since the previous update post. Some of these pull requests have included:
 
Testnet has been working with PR #1060 which was mentioned in the last Developer Update post. I can now happily report that two superblocks have been successfully staked on testnet by Linux clients using contract forwarding. These results are extremely promising and will be a welcome addition for improved superblock stability on mainnet.
In the coming days I expect a new staging build to be ready for testnet deployment so testing will refocus soon on the PRs mentioned in this post.
 
While not entirely wallet related, I did want to point out some behind the scenes improvements for the https://gridcoin.us website. The site now properly redirects to HTTPS and supports TLS 1.2. Our site is now rated "A+" by SSL Labs. Thanks to our founder Rob for making these changes!
 
Thanks for reading this edition of the Developer Update. Expect to see another update two weeks from today (5/21), unless there is a wallet update released between now and then. If you have any comments or questions for the Gridcoin development team feel free to ask in the comments below. If I am not able to answer your question directly, I can certainly forward it to someone who can!
submitted by barton26 to gridcoin [link] [comments]

Nice Article About How HPB Perform Vs EOS (and so ETH)

HPB: Unique Blockchain Infrastructure
Now most public chains will mention that the problem of tps development is the problem of the blockchain. This is also because the traditional blockchain has the problem of poor performance. In order to reach consensus, the efficiency is sacrificed. But if you want to build an ecosystem of countless DAPPs based on the public chain, there is no guarantee of performance that is almost impossible.
The dream of building a DAPP ecosystem is that Bitcoin has not been completed and it is not necessary to complete it. Bitcoin is only a digital currency and it has initially fulfilled its historical mission. It has become a value storer, and it has opened the world of the blockchain. .
Ethereum started with the goal of building a world-wide computer that provided the infrastructure for building decentralized applications, but so far it has only succeeded in the crowdfunding field. Due to performance, cost, scalability, and other issues, it is not yet possible to become a DAPP infrastructure. By the end of 2017, a simple encrypted cat game would have caused Ethereum to jam. Ethereum tried to get rid of the predicament through techniques such as fragmentation, Plasma, and PoS consensus.
Newcomers, such as EOS, are highlighting their high performance, emphasizing the possibility of reaching mega-level tps. Then, in the future, an infrastructure is needed to build a prosperous DAPP ecosystem on this decentralized infrastructure to meet the user or business needs of different scenarios.
What kind of program is a better choice? This is what blue fox has been paying attention to. Blue Fox focuses on an HPB blockchain project that uses a completely different search path than other public chains or infrastructure. This path is worth paying attention to all the buddies who pay attention to the blockchain.
This path is a combination of hardware and software. It is more demanding and the practice is more difficult. However, if it is truly grounded, it may be a good path.
HPB to become a high-performance blockchain infrastructure
Whether HPB or EOS have the same goals, they must provide a high-performance infrastructure for the decentralized ecosystem. why? Mainly from the blockchain to the mainstream business scene point of view. The current blockchain has achieved some success in security and decentralization, but there are natural constraints in terms of efficiency. This hinders its application scenario to the mainstream.
This is also a direction that Blockchain 3.0 has been exploring. Through higher performance, lower costs, and better scalability to meet the needs of more decentralized application scenarios.
The current bitcoin and Ethereum's throughput are both worrying. Bitcoin supports about 7 transactions per second on average, and Ethereum has about 15 throughputs. If you make the block bigger, you can also increase the throughput, but it will cause the problem of block bloat. Last year, an encrypted cat game made everyone see the blockchain congestion problem. From a performance point of view, it takes a long time for blockchains to reach the mainstream.
In addition to the lack of tps performance, the transaction cost of the blockchain is high. Both ordinary users and developers cannot afford gas costs that are too high. For example, before Ethereum's crypto-games became hot, there were even transaction fees compared to encrypted cats. It is also expensive.
The HPB and EOS goals are similar, but their paths are completely different. HPB uses a combination of hardware and software, has its own dedicated chip hardware server, which makes it theoretically have higher performance.
HPB is also trying to create an operating system architecture that can build applications. This architecture includes accounts, identity and authorization management, policy management, databases, asynchronous communications, program scheduling on CPUs, FPGAs, or clusters, and hardware accelerated technology. Realizes low delay and high concurrency and realizes mega-level tps to meet the needs of commercial scenarios.
It is different from EOS. Its architecture, in addition to its software architecture and its hardware architecture, is a combination of hardware and software blockchain architecture that combines high-performance computing and cloud computing concepts. The hardware system includes a distributed core node composed of high performance computing hardware, a general communication network, and a cloud terminal supported by high performance computing hardware.
The core node supports a standard blockchain software architecture, including consensus algorithms, network communications, and task processing. It also introduces a hardware acceleration engine. It works with software to achieve high-performance tps through BOE technology (Blockchain Offload Engine) and consensus algorithm acceleration, data compression, and data encryption.
BOE makes HPB unique
In the HPB's overall architecture, compared with other blockchain infrastructures, there are obvious differences. One of the important points is its BOE technology.
BOE mentioned above, is the blockchain offload engine. The BOE engine includes BOE hardware, BOE firmware, and matching software systems. It is a heterogeneous processing system that achieves high performance and high concurrent computational acceleration by combining CPU serial capabilities with the parallel processing capabilities of the FPGA/ASIC chip.
In the process of parsing TCP packets and UDP packets, the BOE module does not need to participate in the CPU, which can save CPU resources. The BOE module performs integrity checking, signature verification, and account balance verification on received messages such as transactions and blocks, performs fragment processing on large data to be transmitted, and encapsulates the fragments to ensure the integrity of received data. At the same time, statistics work will be performed according to the received traffic of the TCP connection, and corresponding incentives will be provided according to the system contribution.
BOE has played its own role in signature verification speed, encryption channel security, data transmission speed, network performance, and concurrent connections.
The BOE acceleration engine embeds the ECDSA module. The main purpose of this module is to improve the speed of signature verification. ECDSA is also an elliptic curve digital signature algorithm. Although it is a mature algorithm that is widely used at present, the pure software method can only be performed thousands of times per second and cannot meet the high performance requirements. So the combination of BOE and ECDSA is a good attempt.
In the process of data transmission between different nodes, BOE needs to establish an encrypted channel. In this process, it uses a hardware random number generator to implement the security of the encrypted channel, because the seed of the random number of the key exchange becomes unpredictable.
The BOE acceleration engine also uses block data fragmentation broadcasting technology. Block fragmentation includes a complete block header, which facilitates the broadcast of newly generated blocks to all nodes. With block data fragmentation, network data can be quickly transmitted between different nodes.
The BOE technology can perform traffic statistics of node connections based on hardware, and can calculate network bandwidth data provided by different nodes. Only providing network bandwidth to the system will have the opportunity to become a high contribution value node. In this way, incentives for the contribution of the nodes are provided.
In terms of concurrency, BOE is expected to maintain more than 10,000 TCP sessions and handle 10,000 concurrent sessions through an acceleration engine. BOE's dedicated parallel processing hardware replaces the traditional software serial processing functions such as transaction data broadcasting, unverified blockwide network broadcasting, transaction confirmation broadcasting, and the like.
According to HPB estimates, through the BOE acceleration engine, the session response speed and the number of session maintenance can reach more than 100 times the processing power of the common computing platform node. If the actual environment can be achieved, it is a very significant performance improvement.
Consensus algorithm for internal and external bi-level elections
HPB not only significantly improves performance through BOE, but also adopts a dual-layer internal and external voting mechanism in consensus algorithms. It attempts to achieve more efficient consensus efficiency on the premise of ensuring security and privacy.
Outer election refers to the selection of high-contribution-value node members from many candidate nodes, and the election will use node contribution value evaluation indicators. Inner-layer election refers to an anonymous voting mechanism based on a hash queue. When a block is generated, it calculates which high-contribution value node preferentially generates a block. Nodes with high priority have the right to generate blocks preferentially.
So, how to choose high contribution value node? Here is the first indicator to evaluate the contribution value. The indicators include whether a BOE acceleration engine is configured, network bandwidth contribution (data throughput over a fixed period of time), reputation, and total node token holding time. Among them, the creditworthiness of the node is obtained through the analysis of participating transactions and data analysis such as packaged blocks and transaction forwarding. The total holding time of the node token can be obtained by real-time statistics on the account information.
The outer election adopts an adaptive and consistent election plan. That is, by maintaining the consistency of “books” to ensure the consistency of outer elections, this can reduce network synchronization, and can also use the data of each node on the chain. The first is to put the above-mentioned four evaluation indicators into the block. By keeping the account books consistent, you can calculate the current ranking of all the participating candidate nodes. The higher-ranking high-contribution value nodes will become the official high contribution in the next round. Value node.
With the formal high contribution value node, the goal of the inner election is to find the high contribution value node corresponding to each block as soon as possible. The entire process is divided into three phases: nominations, statistics, and calculations. These three phases combine security, privacy, and performance.
The first is the nomination. At the beginning of the voting period, the BOE acceleration engine generates a random Commit. The high contribution value node submits its Commit, and the Commit synchronizes with the chain generated by the high-performance node. After the voting period is over, the Commit in the blockchain is started and the ticket pool is created. The last is the calculation. The calculation is mainly based on the weight algorithm to calculate the node's generation priority in the block. Generate the highest-priority high-contribution value node and obtain the block package right.
Other nodes can verify the random number and address signature according to the principle of verifiable random function, which not only guarantees security, but also guarantees the unpredictability and privacy of high contribution value nodes.
In general, HPB's consensus algorithm combines security, privacy, and speed through a combination of hardware and software. Using the BOE acceleration engine to generate random numbers, contribution value evaluation indicators, coherence ledgers, anonymous voting mechanisms, weight algorithms, signature verification, etc., privacy, reliability, security, and high efficiency are achieved.
Universal virtual machine design: support for different blockchains
The HPB virtual machine adopts a plug-in design mechanism and can support multiple virtual machines. It can implement the combination of the underlying virtual machine and upper level program language translation and support, and support the basic application of virtual machines. In addition, the external interface of the virtual machine can be realized through customized API operations, which can interact with the account data and external data.
The advantage of this mechanism is that it can realize the high performance of native code execution when the smart contract runs, and it can also implement the common virtual machine mechanism supporting different blockchains. For example, it can support Ethereum virtual machine EVM. The smart contract on EVM can also be used on HPB.
Neo's virtual machine NeoVM can also be used on HPB. When high-performance scenarios are needed, users of both EVM and NeoVM need only a few adaptations to interact with other HPB applications.
The HPB smart contract has also made some improvements, such as the management of the life cycle, auditing and forming a common template. No progress can realize the full lifecycle management of smart contracts, such as the complete and controllable process management and integration rights management mechanism for intelligent contract submission, deployment, use, and logout.
In smart contract auditing, HPB conducts a protective audit that combines automated tool auditing with professional code design. In terms of templates, HPB gradually formed a generic smart contract template to support the flexible configuration of various common business scenarios.
Incentives for a positive cycle of token economy
When the high-contribution value node generates a block, it will receive a token reward from the system. From the design of the HPB, the system will issue a token of no more than 6% per year, and the additional token will be proportional to the total number of high-contribution nodes and candidate nodes.
In order to obtain the token reward from the system, it must first become a high contribution value node, and only the high contribution value node has the right to generate a block.
In order to obtain the right to generate a block, it is necessary to contribute, including holding a certain number of HPB tokens, having a BOE hardware acceleration engine, and contributing network bandwidth to the system.
From its mechanism, we can see that HPB's token economic system design is considered from the formation of a positive incentive system. It maintains the overall HPB system by holding the HPB token, having a BOE hardware acceleration engine, and contributing network bandwidth to the system. safe operation.
HPB landing: supports a variety of high-frequency scenes
In essence, HPB is a high-performance blockchain platform and is an infrastructure where various blockchain applications can be explored. Including blockchain finance, blockchain games, blockchain entertainment, blockchain big data, blockchain anti-fake tracking, blockchain energy and many other fields.
In terms of finance, decentralized lending, decentralized asset management, etc. can all be built on the HPB platform to meet high-frequency lending and transaction scenarios.
In terms of games, although all game operations are not practical, the up-chaining and trading of assets such as game props are important scenes. Once the realization of the game product chain, you can ensure that the game assets are transparent, unique, can not be tampered with, never disappeared, etc., providing great convenience for the transaction between the game products.
Compared with traditional centralized service providers, there are many advantages. For example, there is no need to worry about the loss, confiscation, or change of virtual game products. The transaction process is also simple and convenient. Since HPB has a high-performance blockchain, it is expected to support millions of concurrents, and many high-frequency scenarios can also be satisfied.
For blockchain entertainment, it can support the securitization of star assets, such as star-related token assets. In terms of blockchain big data, it can support the data right, ensure that the data owner controls the data ownership, ensure the authenticity of the data, traceability, can not be modified, and finally realize data transactions according to the needs of different entities. , to ensure personal privacy and data security.
Based on HPB's blockchain infrastructure, based on its high performance, blockchain applications can be built in multiple scenarios. The HPB design provides a blockchain application program interface and application development package. In the HPB blockchain base layer, it provides blockchain data access and interactive interfaces, and supports various applications and development languages ​​using JSON-RPC and RESTful APIs. It also supports multi-dimensional blockchain data query and transaction submission, and the interactive access interface can be integrated with the privilege control system.
The application development package includes comprehensive functional service packages that operate on blockchains based on different development languages. For example, it provides functional interfaces such as encryption, data signature, and transaction generation, and can seamlessly support integration and function expansion of various language service systems. , supports multiple language SDKs such as Java, JavaScript, Ruby, Python, and .NET.
Conclusion
If the future blockchain wants to enter the mainstream population, it must have high-performance public-chain or infrastructure support to form a true application ecosystem. Ethereum's dream to build a decentralized ecosystem cannot be achieved on an existing basis. Ethereum is trying to improve performance and expand scalability through fragmentation, plasma, and pos consensus mechanisms.
At the same time, the current status quo has also spawned other public-linked efforts, including eos, HPB, etc. Among them, HPB has adopted a unique combination of hardware and software, dedicated BOE hardware acceleration, signature verification speed, encryption channel security, data transmission Speed, network performance, and high concurrent support all have their own advantages over simple software solutions.
In the software architecture, consensus algorithms for internal and external elections, flexible virtual machine design, application program interfaces, and development packages are also used to provide infrastructure for the development of blockchain application scenarios.
From the overall design of HPB, its goal is to provide high-performance infrastructure for the entire blockchain to mainstream people. With a high-performance infrastructure, blockchains can only be implemented in many high-frequency scenarios to create more application ecosystems and have the opportunity to reach mainstream people.
The HPB team focused on the technical background, including the founder Wang Xiaoming who was an early evangelist in the blockchain and once participated in the establishment of UnionPay Big Data, Beltal, and Beltal CTO. Co-founder CTO Xu Li has more than 10 years of experience in chip industry R&D and management. He was responsible for the logic design, R&D, and FPGA chip marketing of the core products of the world's top qualified equipment suppliers and the world's largest component distributor. Technical VP Shu Shanlin once worked for Inspur, a well-known Chinese server manufacturer, as an embedded chief engineer, and has extensive R&D experience in embedded software and underlying software. Another co-founder, Li Jinxin, is a former blockchain analyst of Guotai Junan and has extensive experience in digital asset investment.
The background of the team members is in line with the HPB's soft and hard path. According to the latest monthly report, the basic PCB layout design of the BOE board, the overall architecture design of the BOE, and the ECC acceleration scheme have also been completed. At the same time, several tests have been completed for the BOE hardware acceleration engine.
It is hoped that HPB will develop rapidly and will embark on a path with its own characteristics in the future of blockchain infrastructure competition. It will provide support for more decentralized applications and eventually build a prosperous ecosystem.
Risk Warning: All Blue Fox articles do not constitute investment recommendations, investment risks, it is recommended to conduct in-depth inspection of the project, and carefully make their own investment decisions.
Source: https://mp.weixin.qq.com/s/RSuz6R6MTotEL_U__Al_Wg
submitted by azerbajian to HPBtrader [link] [comments]

DEVCON2 report: Day Three - Final day

previous days
Question: the 3 days of devcon are over. Are people interested in reports on the next 3 days of international Blockchain week (demo day + 2 days of global Blockchain summit) http://www.blockchainweek2016.org
`
Event update
The buzz during the day was around the "stick puzzle" that Bok Khoo was giving out to people. It is just a stick, with a loop of string. He gets you to turn away, he uses "the trick" to put it onto your bag and then you try to get it off.
The WeChat channel was just filled with everyone asking where they can get it, and the screaming that they can't figure it out. Only about 5 people reported they were able to solve it (I haven't yet)
http://imgur.com/mYfJQP4 http://imgur.com/4Euka1a
`
Sessions
I'm biased, but I thought the announcement from Microsoft with the update of cryptlets was a big deal. The morning sessions covered a few different oracle systems, the afternoon had lots of IPFS sessions.
Microsoft - A Lap around Cryptlets
https://azure.microsoft.com/en-us/blog/cryptletsdd/ https://azure.microsoft.com/en-us/documentation/templates/ethereum-consortium-blockchain-network/ https://azure.microsoft.com/en-us/blog/authomarleyg
Microsoft was a sponsor of Devcon1 & 2 Ethereum is a 1st class citizen Support for community & partners - Bizspark, Meetups, Workshops
Announcing: Bletchley v1 Distributed Ledger stack V1 is a private Ethrerum consortium, that you can spin up for your own enterprise / group
http://imgur.com/olwwd36
Cryptlets are being developed to help with security, identity, etc. How do you get trusted external data feeds injected into the Blockchain? Doing things on a specific interval (every 15 mins) When price of something hits a threshold (oil goes above $40/barrel) Secure IP protected algorithms, but still share with blockchain network. Use libraries for common platforms (.Net, Java, etc)
Cryptlets vs Oracle Cryptlets will have a marketplace on Azure that will allow you to purchase and utilise
Use case: Trigger on an event Wake up on 4pm, if market was open that day, then give me the price of gold for that day.Get signature of attested server, attested sender.
Use case: Control Using smart contract like a traditional DB. Declare data you are keeping track of, and the functions/"stored proc" to update that data. Cryptlet runs off chain, and can be scaled up.
http://imgur.com/ysgL8S2
Utility cryptlet. Use an attribute in solidity contract with cryptlet details Developer references at design time the cryptlet they want the contract to call Contract cryptlet, deploy the cryptlet at same time as contract.
Why would you want Azure to do this? SGX allows you to create "secure enclaves", can have complete isolation on the hardware chip where it is not modifable. Provides a secure enclave at the CPU level. Can give full attestation right down to the silicon. Will be provided as a enclave container on Azure. Will be released for .NET core CLR first, then other languages. Can create cryptlet libraries that you can scale and put into the Azure marketplace. An ecosystem for developers & ISVs to consume and publish.
Bletchley v1 released today will let you spin up a private consortium. Before today, it took a long time to try and deploy a private consortium (can take weeks to read doco, Now takes 5 minutes to deploy! Creates a private consortium, puts each member in its own separate subnet
http://imgur.com/w4yUsqE
Mist Vision and Demo I was too busy sharing the release posts of Microsoft project bletchey v1, missed this talk. It did look interesting, I will watch this one later. Idea: Reward for bandwidth. Providing connection could replace mining as entrance point for desktop computers. Allow you to have a trickle so you can trigger smart contracts. Standardised backends, so that you can swap out the underlying node between geth, blockapps, etc.
Web3.js
https://github.com/ethereum/web3.js Etehereum JS API Smart conracts are EVM opcodes, Helps translates calls to JSON RPC calls. Helps do the ABI encoding when sending data from JS to EVM It kept on growing, many different utility functions being thrown in. Is time to clean it up and be refactored.
They are now building a NEW web3.js The communication will be socket based, will enable subscriptions. Everything will be based on promises to subscribe to events, like log events. Bunch of other newer cleaner methods and ways to do things like deploying contracts.
Smart contract security
Was a very good postmorteum of The DAO and things that could be done to mitigate it in the future.
An issue with The DAO was trying to do a massive jump from centralisation all the way to full decentralisation. Meant no one could step up and make a decision on how to save it. We need to make smaller steps towards full decentralisation as we learn as a community how to do this. Same security patterns as yesterday's talks: check invarients, beware 1024 call stack depth, reentry exploit (update state BEFORE executing calls), timestamps are manipulatable. Updateable contracts. Who can update it? Community multisig? We need better rools: formal verification, compiler warnings, improved IDEs, trusted libraries, excape hatches
Conclusion: It is still very early days in this space, be careful.
A Provably Honest Oracle Model: Auditable Offchain Data Gathering & Computations
Oracalize is the most widely used oracle (until everyone starts using Microsoft Azure cryptlets ;-) ) Contract calls Oracalize contract with the data they want, off chain they see this get the data, Oracalise then trigger their contract externally, which does a callback to your contract with the data. Can use external notary servers. Can get proof from multiple external services to get a higher level of confidence about data (e.g. stock price from a few feeds). Off-chain (auditable_ computation) AWS sandbox 2.0. Put the execution package onto IPFS, AWS gets it and executes it, signs it.
iEx.ec: Fully Distributed Cloud Thanks to the Ethereum Blockchain
http://iex.ec/ Provides blockchain based execution environments Global market for computing resources. Idea is to do what we did before with "grid computing" use the idle capacity of computers. But this time do a trickle of micropayments. Allows people to harness this global power to execute their tasks in a global "distributed cloud".
The Final frontier: The company smart conract
http://otonomos.com/ Helping companies to incorporate on the blockchain.
Smart oracles
https://github.com/smartoracles Connecting to external resources is difficult. Hard to try and use external currencies (like a bank account / fiat money) to make transactions. Could hook in paypal, HSBC, wells fargo, etc. Can provide your own payment services as an API to a smart oracle for smart contracts to consume. Do off chain data storage by calling smart oracle API Roadmap: more data sources & more payment methods
IPFS & Ethereum: Updates
https://Ipfs.io IPFS is AMAZING, seriously go watch the full 1 hour talks Juan has given in previous years.
Current web has current issues. Centralisation, etc. IPFS is a new hypermedia transfer protocol Content can be retrieved not from specific servers, but instead via it's hash so that it can come from anywhere in the network (maybe from the person next to you who has cached it). It is highly modular, all of the transfer protocals, routing, naming, etc. are all swapable Is available as GO-IPFS & now JS-IPFS Means now you can run IPFS in the browser IPFS was great for static content, but not so great for dynamic content. Low latency pub/sub protocol will help with dynamic data. Created a distributed peer to peer chat app using this new dynamic content protocol. IPLD a common link-tree hash format Will be able to use IPFS to retrieve ethereum blockchain blocks DIRECTLY Can use IPFS as a package manager to retrieve them in a distributed manner.
Many projects are using Ethereum & IPFS Uport, Digix, Infura, Ujo, Eris, Blockfreight. Filecoin was created as a way to try and incentivize nodes to keep files longer time. People rent out hdd space to earn filecoin. Exchange bitcoin/filecoin. Use filecoin to store files in network. Filecoin is going to be built on top of the public Ethereum blockchain, as a virtual blockchain / token.
IPFS Libp2p & Ethereum networking
Network connectivity between any 2 nodes can be difficult. Censorship, bandwidth, network issues, etc. Having to deal with different networking topologies and access. Libp2p & Devp2p is different. Devp2p is for Ethereum. LIbp2p is modular, can swap out components to change network access, encryption methods, etc. Can build up a MEGA mesh network, by utilising traditional wired internet, radio, bluetooth between some nodes. Web browser using web socket, to a node, which routes across network, to zigbee to a IoT device. Libp2p & Devp2p could merge and augment each other. Could create the libp2p components to replace the devp2p bits Any 2 nodes that speak the same protocol can communicate and be a part of the network chain. Experiment. They took the browser based version of EVM. Then used Libp2p to talk to the Ethereum network. Had a complete ethereum node running in a browser.
Uport
https://uport.me/ Universal identity platform Current challenges: key management. Ux for average person. Dapps via mobile. Identity and data ownership. How do you keep a consistent identity, even if you lose a key. Have some multisig contracts that you can use to keep track. Social recovery, use your friends to attest it is really you. Keep private key on mobile, do transactions on the desktop, scan a QR code to sign the transaction on your phone and send it off.
A Deep Dive into the Colony Foundation Protocol
It is an open source governance protocol built on Ethereum Problem with voting is how to prevent Sybil attacks. Votes are weighted by a reputation score. Reputation is non-transferable that can only be earned. Total weighted voting helps mitigate this.
Chain orchestration tooling & smart contract package management
Eris is tooling for developers. Package manager to build your own blockchain. Can compose a chain, e.g. geth + tendermint consensus. Init, install, do. Can easily install on Mac/bew, linux/apt-get, Windows/choco
The Golem Project: Ethereum-based market for computing power
http://www.golemproject.net/ Anyone can make an offer to sell computing power. e.g. Distributed rendering Want to create a standard framework that anyone can use to submit and process jobs.
Status: Integrating Ethereum Into Our Daily Lives
https://status.im Want to get ethereum everywhere. "Mist for Mobile" Everyone is using their mobile phones for everything, but mostly using instant messaging. What would Ethereum in a IM window look? Created a IM mobile app that has a local geth node. tart up, it asks you to create a password, it generates a pub/private pair. Then can send messages via whisper, and the messages are signed with your public key. Can load Dapps up in the local webview and interact with them. Allows you to create "chat Dapps", that you interact with via text. Like chatbots
Maker Ecosystem Overview
www.Makerdao.com Dai: seeking stability on blockchain. Stablecoin engine: smart contract that holds collateral reserves and controls the Dai lifecycle. MKR: open source community managing risk of the system In the last year, investing in a solid technical core. More slow and audit things. Moving into the next phase of stablecoin development. Their latest project is the "Simplecoin project" Meeting Thereum community's need for stability. An independent platform for creating centrally administered simple stablecoins. Issues create their own rule sets: Collateral types, participant whitelists, security parameters. Example: Shrutebucks. The only people who own it are Dwight, Jim & Pam. They backed it with 1/3 ETH 1/3 DGX 1/3 DUSD.
Orbit. A distributed peer to peer app on IPFS
https://github.com/haadcode Created a full distributed chat room, itself distributed through IPFS. It is integrated with uPort for identification Using uPort allows you to verify that you are talking to the correct person in the chat channel. All their messages are signed with their public keys He also created a full distribited twitter clone, using uport for the identity as well. Orbit-db key value store DB that stores its data on IPFS. Eventually consistent Appends data to the DB, an event is sent to those subscribed on pub/sub so they can see the latest root hash. Based on CRDT Ethereum + Pubsub + CRDTs + IPFS = super power primatives to build dynamic distributed apps
Development considerations with distributed apps. Need to ensure that apps work offline. No centralised servers. No data silos. Provide integration path.
Future work: could you use uPort for ACL like permissions? Mobile use cases, how to make it work nicely on mobiles
Building scalable React Dapp architecture
https://github.com/SilentCicero/react-dapp-boilerplate React + Ethereum He has a configured boilerplate template. Has contract scaffolding. Enforced contract Linting/testing. Wallet generation/identity. Preconfigured web3 instance. UI: Mature react arhitecture "react boilerplate". Prices listed in USD with ETH/btc via kraken api. A basic multi-contract example Dapp. Offline first, dapp runs without internet. Uses Redux. State models in UI & blockchains work well. PostCSS, CSS Modules, sanitize.cs. Redux, immutableJS, reslect, redux-saga, i18n, redux-router. Web3, ethdeploy, dapple, solium, eth-lightwallet, chaithereum, ethereumjs0-testrpc Enforced contract testing in 2 languages.
Ethereum for Enterprise (BlockApps Strato)
Trying to make sure that Ethereum stays relevent to enterprise development. Why do you need a blockchain WITHIN an org, shouldn't they trust each other? Well different departments may not, they may reconcile differently, and can help automate/orchestrate between them. Blockchain is the "killer app" for cloud financial services. Legacy infrastructure, batch prossing, etc are all restricting fintech from progressing. Blockchain can happen in real time, can replace legacy. Ethereum is very flexible and programmable, works well. There are others based on Bitcoin (like Hyperledger). Ethereum + Blockapps = Extreme productivity + Proven Technology. Blockapps is extending Ethereum for Enterprise. Runs very well on Azure Enterprises don't want all their data exposed on public chain. Blockapps helps solve data privacy and scaling with multichain fabrics.
submitted by DavidBurela to ethereum [link] [comments]

Transcript from Ravencoin Open Developer Meeting - Nov. 16, 2018

Tron at 2:03 PM

Topics: Messaging (next phase) UI 2.2 - Build from develop - still working out a few kinks Mobile - Send/Rcv/View Assets - In progress Raven Dev Kit -Status

RavencoinDev at 2:04 PM

Hey Everybody! Let's get started!Thanks Tron for posting the topics.Tron is going talk about Messaging Plans.Let's start there.

Chatturga at 2:06 PM

It looks like this channel is not connected to the IRC. One moment

RavencoinDev at 2:07 PM

Well, we going to move forward as the tech guys fix the IRC connections.

Tron at 2:07 PM

I wanted to have a doc describing the messaging, but it isn't quite ready.I understand this isn't going to IRC yet, but I'm starting anyway.

RavencoinDev at 2:08 PM

Look for it soon on a Medium near you.

Tron at 2:08 PM

Summary version: Every transaction can have an IPFS hash attached.

Vincent at 2:09 PM

any plans for a 'create IPFS' button?

RavencoinDev at 2:09 PM

Yes

Vincent at 2:09 PM

on asset creatin window also?

RavencoinDev at 2:09 PM

Yes

Vincent at 2:09 PM

sweet

Tron at 2:09 PM

IPFS attachments for transactions that send ownership token or channel token back to the same address will be considered broadcast messages for that token.The client will show the message.Some anti-spam measures will be introduced.If a token is in a new address, then messages will be on by default.The second token in an address, the channel will be available, but muted by default.

RavencoinDev at 2:11 PM

That way I can't spam out 21b tokens and then start sending messages to everybody.

Tron at 2:11 PM

We'd like to have messaging in a reference client on all six platforms.

corby at 2:11 PM

Hi!

Tron at 2:11 PM

Photos will not be shown. Messages will be "linkified"

RavencoinDev at 2:12 PM

and plain text.We'll start with the QT wallet support

Tron at 2:12 PM

Any other client is free to show any IPFS message they choose.The messaging is fully transparent.

Rikki RATTOE at 2:13 PM

ok, so messaging isn't private

Tron at 2:13 PM

Anyone could read the chain and see the messages.

RavencoinDev at 2:13 PM

No, never was planned to be private

MSFTserver-mine more @ MinerMore at 2:13 PM

irc link should be fixed

Tron at 2:13 PM

It is possible to put encrypted content in the IPFS, but then you'd have to distribute the key somehow.

RavencoinDev at 2:13 PM

Thanks MSFT!

Chatturga at 2:13 PM

Negative

Tron at 2:14 PM

Core protocol changes Extend the OP_RVN_ASSET to include for any transfer: RVNT <0xHH><0x12><0x20><32 bytes encoding 256 bit IPFS hash> 0xHH - File type 0x00 - NO data, 0x01 - IPFS hash, 0x02 through 0xFF RESERVED 0x12 - IPFS Spec - Using SHA256 hash 0x20 - IPFS Spec - 0x20 in hex specifying a 32 byte hash. …. (32 byte hash in binary)

corby at 2:14 PM

By it's nature nothing on chain is private per se. Just like with wallets you'd need to use crypto to secure messaging between parties.

Tron at 2:14 PM

Advantages: This messaging protocol has the advantage of not filling up the blockchain. The message information is public so IPFS works as a great distributed store. If the messages are important enough, then the message sender can run nodes that "PIN" the message to keep a more durable version. The message system cannot be spoofed because any change in the message will result in a different hash, and therefore the message location will be different. Only the unique token holder can sign the transaction that adds the message. This prevents spam. Message clients (wallets), can opt-in or opt-out of messages by channel. Meta-message websites can allow viewing of all messages, or all messages for a token. A simple single channel system is supported by the protocol, but a channel could be sub-divided by a client to have as many sub-channels as desired. There are no limits on the number of channels per token, but each channel requires the 5 RVN fee to create the channel.

RavencoinDev at 2:14 PM

So, somebody could create their own client and encrypt the data on the blockchain if they wished.

corby at 2:15 PM

Wow Tron types fast

Rikki RATTOE at 2:15 PM

yeah there was some confusion in the community whether messaging would be private and off chain

Tron at 2:15 PM

Anti-Spam Strategy One difficulty we have is that tokens can be sent to any Ravencoin asset holder unsolicited. This happens on other asset platforms like Counterparty. In many cases, this is good, and is a way for asset issuers to get their token known. It is essentially an airdrop. However, combined with the messaging capabilities of Ravencoin, this can, and likely will become a spam strategy. Someone who wants to send messages (probably scams) to Ravencoin asset holders, which they know are crypto-savvy people, will create a token with billions of units, send it to every address, and then message with the talking stick for that token. Unless we preemptively address this problem, Ravencoin messaging will become a useless spam channel. Anyone can stop the messages for an asset by burning the asset, or by turning off the channel. A simple solution is to automatically mute the channel (by default) for the 2nd asset sent to an address. The reason this works is because the assets that you acquire through your actions will be to a newly generated address. The normal workflow would be to purchase an asset on an exchange, or through a ICO/STO sale. For an exchange, you'll provide a withdrawal address, and best practice says you request a new address from the client with File->'Receiving addresses…'->New. To provide an address to the ICO/STO issuer, you would do the same. It is only the case where someone is sending assets unsolicited to you where an address would be re-used for asset tokens. This is not 100% the case, and there may be rare edge-cases, but would allow us to set the channels to listen or silent by default. Assets sent to addresses that were already 'on-chain' can be quarantined. The user can burn them or take them out of quarantine.

RavencoinDev at 2:18 PM

Okay, let me know when/if you guys read through all that. 📷📷2

corby at 2:18 PM

To be clear this is a client-side issue -- anyone will be able to send anything (including messages) to any address on chain..

RavencoinDev at 2:18 PM

It'll be in the Medium post later.

Tron at 2:19 PM

@corby The reference client will only show messages signed by the issuer or designated channels.Who is ready for another wall of text? 📷

corby at 2:19 PM

I hear that's the plan 📷 just pointing out that it is on the client in these cases..

Tron at 2:20 PM

Yes, any client can show anything gleaned from the chain.Goal: A simple message format without photos. URL links are allowed and most clients will automatically "linkify" the message for valid URLs. For display, message file must be a valid json file. { "subject":"This is the optional subject", "message": "This is required.", "expires": 1578034800 } Only "message" is required {"message":"Hello world"}

bhorn at 2:21 PM

expires?

Vincent at 2:21 PM

discount coupon?

Tron at 2:21 PM

If you have a message that worthless (say after a vote), just don't show the message.

bhorn at 2:21 PM

i see - more client side operation

corby at 2:21 PM

/expires

Tron at 2:22 PM

Yep. And the expiration could be used by IPFS pinners to stop worrying about the message. Optional

RavencoinDev at 2:22 PM

If the client sees a message that is expired it just won't display it.

Vincent at 2:23 PM

will that me messaged otherwise may cause confusion?"expired'

RavencoinDev at 2:23 PM

YesWe'll do our best to make it intuitive.

Tron at 2:24 PM

Client handling of messages Pop-up messages or notifications when running live. Show messages for any assets sent to a new address - by default Mute messages for assets sent to an address that was already on-network. Have a setting to not show messages older than X IPFSHash (or 8 bytes of it) =

Rikki RATTOE at 2:25 PM

will there be a file size limit for IPFS creation in the wallet?

RavencoinDev at 2:25 PM

We'll also provide updated documentation.

Tron at 2:26 PM

Excellent question Rikki. Here are some guidelinesGuidelines: Clients are free to show or not show poorly formed messages. Reference clients will limit message display to properly formed messages. If subject is missing, the first line of the message will be used (up to 80 chars). Standard JSON encoding for newlines, tabs, etc. https://www.freeformatter.com/json-escape.html Expiration is optional, but desired. Will stop showing the message after X date, where X is specified as Unix Epoch. Good for invites, voting requests, and other time sensitive messages that have no value after a specific date. By default clients will not show a message after X blocks (default 1 year) Amount of subject shown will be client dependent - Reference client may cut off at 80 chars. Messages longer than 15,000 (about 8 pages) will not be pinned to IPFS by some scanners. Messages longer than 15,000 characters may be rejected altogether by the client. Images will not be shown in reference clients. Other clients may show any IPFS content at their discretion. IPFSHash is only a "published" message if the Admin/Owner or Channel token is sent from/to the same address. This allows for standard transfers with metadata that don't "publish".Free Online JSON Escape / Unescape Tool - FreeFormatter.comA free online tool to escape or unescape JSON strings

RavencoinDev at 2:26 PM

We're hoping to add preferences that will allow the user to customize their messaging experience.

Tron at 2:27 PM

Also, happy to receive feedback from everyone.

corby at 2:27 PM

In theory though if you maintain your own IPFS nodes you should be able to reference files of whatever size right?

Steelers at 2:27 PM

How about a simple Stop light approach - Green (ball) New Message, Yellow (Ball) Expiring Messages, Red (Ball) Expired Messages

RavencoinDev at 2:27 PM

Yes please! That's the point of sharing it here

Chatturga at 2:27 PM

Fixt

push | ravenland.org at 2:28 PM

Thanks @Tron can you provide any details of the coming 'tooling' at the end of november, and what that might enable (apologies as I am a bit late to meeting if this has been asked already)

VeronicaBOT at 2:28 PM

sup guys

Tron at 2:28 PM

Sure, that's coming.

RavencoinDev at 2:28 PM

That's the Raven WebDev Kit topic coming up in a few mins.

push | ravenland.org at 2:29 PM

oki 📷 cheers

RavencoinDev at 2:29 PM

Questions on messaging?

Jeroz at 2:30 PM

Not sure if I missed it, but how fast could you send multiple messages in succession?

BruceFenton at 2:30 PM

Some kind of sweep feature or block feature for both tokens and messages could be useful Certain messages will be illegal to possess in certain jurisdictions If someone sends a picture of Tiennneman tank man in China or a message calling for the overthrow of a ruler it could be illegal for someone to have There’s no way for that jurisdiction to censor the chain So some users might want the option to purge messages or not receive them client side / on the wallet

Tron at 2:30 PM

Messages are a transaction.

RavencoinDev at 2:30 PM

So it'll cost you to spam messages.They can only send a hash to that picture and the client won't display anything not JSON

corby at 2:31 PM

purge/block is the age old email spam

Tron at 2:31 PM

The Reference client - other clients / web sites, etc can show anything they wish.

RavencoinDev at 2:31 PM

You can also burn a token if you never want to receive messages from that token owner.

UserJonPizza|MinePool.com|Mom at 2:32 PM

Can't they just resend the token?

Tron at 2:33 PM

Yes, but it would default to mute.📷2

RavencoinDev at 2:33 PM

meaning it would show up in a spam foldetab

bhorn at 2:33 PM

is muting available for the initial asset as well?

RavencoinDev at 2:33 PM

Something easy to ignore if muted.

Tron at 2:33 PM

@bhorn Yes

BruceFenton at 2:33 PM

Can users nite some assets and not others?

Tron at 2:33 PM

@bhorn It just isn't the default.

BruceFenton at 2:33 PM

Mute

RavencoinDev at 2:33 PM

YesYou can mute per token.

BruceFenton at 2:34 PM

Great

Tron at 2:34 PM

And per token per channel.

Jeroz at 2:34 PM

channels are the subtokens?

BruceFenton at 2:34 PM

What’s per token per channel mean ?

Tron at 2:34 PM

The issuer sends to the "Primary" channel.Token owner can create channels like "Alert", "Emergency", etc.These "talking sticks" are similar to unique assets.📷1ASSET~Channel

RavencoinDev at 2:37 PM

Okay, we have a few more topics to cover today.Tron will post more details on Medium and we can continue discussions there.

Jeroz at 2:38 PM

Ah, I missed channel creation bit for each token with the 5 RVN / channel cost. It makes more sense to me now.

RavencoinDev at 2:38 PM

The developers are working towards posting a new version 2.2 that has the updated UI shown on twitter.

Vincent at 2:39 PM

twit link?

RavencoinDev at 2:39 PM

The consuming of large birds (not ravens) might slow the release a bit.So likely the week after Thanksgiving.

[Dev] Blondfrogs at 2:39 PM

The new UI will contain: - New menu layout - New icons - Dark mode - Added RVN colors

Dan1666 at 2:39 PM

+1 Dark mode

RavencoinDev at 2:39 PM

DARK MODE!

Dan1666 at 2:40 PM

so pleased about that

RavencoinDev at 2:40 PM

I can honestly say it'll be the nicest crypto wallet out there.

[Dev] Blondfrogs at 2:40 PM

A little sneak peak, but this is not the final project📷📷6📷3

!S1LVA | MINEPOOL at 2:40 PM

Outstanding

Dan1666 at 2:41 PM

reminds me of Sub7 ui for those that might remember

UserJonPizza|MinePool.com|Mom at 2:41 PM

Can we have an asset count at the top?

[Dev] Blondfrogs at 2:41 PM

Icons will be changing

Vincent at 2:41 PM

does the 'transfer assets' have a this for that component?

Tron at 2:41 PM

Build from develop to see the sneak preview in action.There may be small glitches depending on OS. These are being worked on.

Rikki RATTOE at 2:41 PM

No plans for the mobile wallet to show an IPFS image I'm assuming? Would be a nice feature if say a retail store could send a QR coupon code to their token holders and they could scan the coupon using their wallet in store

[Dev] Blondfrogs at 2:42 PM

@Vincent That will probably be a different section added later📷1

RavencoinDev at 2:42 PM

Yes, Rikki we do want to support messaging.Looking into how that would work with Apple and Google push.

push | ravenland.org at 2:42 PM

sub7📷1hahaoldschoolit so is similar aswell

[Master] Roshii at 2:43 PM

Messages are transactions no need for any push

Tron at 2:43 PM

@Rikki RATTOE There's a danger in showing graphics where anyone can post anything without accountability for their actions. A client that only shows tokens for a specific asset could do this📷1

RavencoinDev at 2:43 PM

True, unless you want to see the messages even if you haven't opened your wallet in a week.

Rikki RATTOE at 2:44 PM

the only thing I was thinking was if you simply linked the image, somebody could just copy the link and text it off to everyone and the coupon isn't all that exclusive

UserJonPizza|MinePool.com|Mom at 2:44 PM

Maybe a mobile link-up for a easy way to see messages by just importing pubkey(edited)

RavencoinDev at 2:45 PM

Speaking of mobileWe are also getting close to a release of mobile that includes the ability to show assets held, and transfer them.Roshii has been hard at work.📷6📷1

Vincent at 2:46 PM

can be hidden also?

RavencoinDev at 2:47 PM

We're still finalizing the UI design but that is on the list of todos📷1

Under at 2:47 PM

Could we do zerofee mempool messaging that basically gets destroyed after it expires out of the mempool for real-time stealth mode messaging

corby at 2:48 PM

That's interesting!

RavencoinDev at 2:49 PM

There are other solutions available for stealth messaging, that's not what the devs had intended to build. It does sound cool though @Under

Under at 2:50 PM

📷 we’ll keep up the good work. Looking forward to the db upgrades. Will test this weekend

RavencoinDev at 2:50 PM

Thanks!That leaves us with 10 minutes for the Dev Kit!Corby has been working on expanding some of the awesome work that @Under has been doing.

corby at 2:52 PM

Yes -- all of the -addressindex rpc calls are being updated to work with assets

RavencoinDev at 2:52 PM

Hopefully we'll be able to post the source soon once the initial use cases are all working.

corby at 2:52 PM

so assets are being tied into transaction history, utxos, etc

RavencoinDev at 2:52 PM

The devs want to provide a set of API's that make it easy for web developers to build solutions on top of Ravencoin.VinX is investigating the possibility of using Ravencoin to power their solution.

corby at 2:53 PM

will be exposed via insight-api which we've forked from @Under

[Master] Roshii at 2:53 PM

Something worth bringing up is that you will be able to get specific asset daba from full nodes with specific message protocols.

corby at 2:54 PM

also working on js lib for client side construction of asset transactions

Tron at 2:55 PM

Dev Kit will be an ongoing project so others can contribute and extend the APIs and capabilities of the 2nd layer.📷3📷3

RavencoinDev at 2:55 PM

Will be posted soon to the RavenProject GitHub.

corby at 2:55 PM

separate thing but yes Roshii that is worth mentioning -- network layer for getting asset data

RavencoinDev at 2:55 PM

Again want to give thanks to @Under for getting a great start on the project

push | ravenland.org at 2:56 PM

Yes looking forward to seeing more on the extensive api and capabilities, is there a wiki on this anywhere tron?(as to prevent other people replicating eachothers work?)

RavencoinDev at 2:56 PM

The wiki will be in the project on GitHub

push | ravenland.org at 2:56 PM

im guessing when the kit is released, something will appear, okok cool

RavencoinDevat 2:57 PM

Any questions about the Web DevKit?

push | ravenland.orgToday at 2:57 PM

well, what kind of support will it give us, that would be nice, is this written anywhereI'm still relatively new to blockchain<2 yearsso need some hand holding i suppose 📷

bhorn at 2:58 PM

right, what are initial use cases of the devkit?

push | ravenland.org at 2:58 PM

i mean im guessing metamask like capabilitysome kind of smart contract, some automation capabilitiesrpc scriptsstuff like thiseven if proof of concept or examplei guess im wondering if my hopes are realistic 📷

RavencoinDev at 2:59 PM

You can see the awesome work that @Under has already don that we are building on top of.

push | ravenland.org at 2:59 PM

yes @Under is truly a herooki, cool

RavencoinDev at 2:59 PM

https://ravencoin.network/Ravencoin Block ExplorerRavencoin Insight. View detailed information on all ravencoin transactions and blocks.

push | ravenland.org at 2:59 PM

ok, sweet, that is very encouragingthanks @Under for making that code public

corby at 3:00 PM

It will hopefully allow you to write all sorts of clients -- depending on complexity of use case you might just have js lib (wallet functions, ability to post txs to gateway) or a server side project (asset explorer or exchange)..(edited)

Tron at 3:00 PM

Yeah, thanks @Under .

RavencoinDev at 3:00 PM

What's your GitHub URL @Under ?

push | ravenland.org at 3:00 PM

https://github.com/underdarkskies/ i believeGitHub· GitHubunderdarkskies has 31 repositories available. Follow their code on GitHub.📷

RavencoinDev at 3:00 PM

Yup!

push | ravenland.org at 3:00 PM

he is truly a hero(edited)

RavencoinDev at 3:00 PM

LOL

push | ravenland.org at 3:00 PM

damn o'sgo missing everywhere

RavencoinDev at 3:01 PM

teh o's are hard... Just ask @Chatturga

push | ravenland.org at 3:01 PM

📷

Chatturga at 3:01 PM

O's arent the problem...

push | ravenland.org at 3:01 PM

📷📷

RavencoinDev at 3:02 PM

Alright we're at time and the devs are super busy. Thanks everybody for joining us.

push | ravenland.org at 3:02 PM

thanks guys

RavencoinDev at 3:02 PM

Thank you all for supporting the Raven community.📷6

corby at 3:02 PM

thanks all!

push | ravenland.org at 3:02 PM

keep up the awesome work, whilst bitcoin sv and bitcoin abc fight, another bitcoin fork raven, raven thru the night📷5

Vincent at 3:02 PM

piece!!

RavencoinDev at 3:03 PM

We're amazingly blessed to have you on this ride with us.📷5📷9📷5

Dan1666 at 3:03 PM

gg

BruceFenton at 3:03 PM

📷📷12📷4

UserJonPizza|MinePool.com|Mom at 3:55 PM

Good meeting! Excited for the new QT!!
submitted by Chatturga to u/Chatturga [link] [comments]

Why Bitcoin is better than Paypal

Hi,
I am a paypal user for many years, recently, I found bitcoin, from my personal pespective, bitcoin is much better than paypal in many directions:
1) I dont need to worry about the account been suspend. 2) I am from China, everytime, when i withdraw paypal USD into my China bank acccount, i need fill a big form to explain where those money came from and what they are for. With BTC, i dont need worry about it, i can exchange BTC to CNY in local exchange market directly 3) As a coder, i did some project that integrate paypal payment into website. In paypal situation, the website need communicate with the server (with IPN or with other way) to get the transation infomation. but when using Bitcoind, we dont need to communicate with another server, just using jsonRPC inside the server, that is more easier.
All of those make me feel BTC is much more better than paypal or any other online payment service. In one word: Freedom.
submitted by we2code to Bitcoin [link] [comments]

Bitcoin-Tumbling service (University Project)

hello guys,
my teacher was so nice and inform us , that the hole class has to take bitcoin projects and i was thinking to take a bitcoin fork project, but my teacher destroyed my dreams and gave me a Tumbeling service for bitcoins. I was like maaaah ok whatever ;). Now we have to define :
Scope of work and requirement definitions Main functions necessary for the platform User stories And wireframes development. what makes your tumbeling servervice better then others (BAAAANG this question shocked me almost, what would you say?) additional functions from our side based on professional experience
but i dont know how to bring these simple questions to a bulletprof project. (IVE NEVER DONE A BITCOIN PROJECT OR HAVE PROJECT KNOWLEDGE BUT ITS INTERESTING)
my point of view:
Everything should run on a VPS (if its possible Full node + Config) An Clearweb and onion website with Bitcoin Core running on the back end.
Exchange Api’s (3rd party) or should they run a Fullnode. I wouldn’t rely on a public APIs, not only, because they are unreliable but if I want to hide my server, then I can only do requests to them with Tor and I noticed many times these APIs suddenly stop accepting requests over Tor or using all kind of rate limiting. 3rd party services, I don't have any issues with it. But some people suggested that it might be less secure than using a wallet locally on my server. I think the best option is running your own full node (e.g. bitcoin core) and then on your server connect to it using JSON-RPC to generate addresses and request payments. it’s just provide realiability, and more privacy.
A website mixer, they don’t provide much privacy, due to amount correlation and the wallets those are being used to interact with you are also terrible from a privacy point of view. Failing this, they want to at least have fixed denominations for your mixer, so it’d at least provide some privacy. Eg. enable mixing 0.01/ , 0.1 and 1 bitcoins, and don’t let them do something like 0.12353243 btc to be mixed, since Blockchain analysis can identify the transactions related to the mixer and based on simple amount analysis would easily reestablish the links.
*Server side bitcoin mixing (VPS) / blending / tumbling service *Safe and non-traceable algorithm *Letter of Guarantee *Bitcoin must not be on online wallets. Nobody should have the full power over Bitcoin except me. *2FA Verification (PGP) *Affiliate-Program (Refferal Link) *2 to 3 additional functions (But i dont know on the customer side, i would like to have maximum privacy/security
Others: *VPS hosting, SSL, DDOS protection incl. Cloudflare *Extensive documentation (A to Z, Change Management, Audit) *Everything must be able to run on a Tormirror or after a domain change *Everything has to be "hackproof" and withstand later audits
Kind regards and thanks for the help
Alex
submitted by alexjitsu to Bitcoin [link] [comments]

Bitcoin-Tumbling service (University Project)

hello guys,
my teacher was so nice and inform us , that the hole class has to take bitcoin projects and i was thinking to take a bitcoin fork project, but my teacher destroyed my dreams and gave me a Tumbeling service for bitcoins. I was like maaaah ok whatever Wink. Now we have to define :
-Scope of work and requirement definitions –Main functions necessary for the platform -User stories -And wireframes development. -what makes your tumbeling servervice better then others (BAAAANG this question shocked me almost, what would you say?) -additional functions from our side based on professional experience
but i dont know how to bring these simple questions to a bulletprof project. (IVE NEVER DONE A BITCOIN PROJECT OR HAVE PROJECT KNOWLEDGE BUT ITS INTERESTING)
my point of view:
Everything should run on a VPS (if its possible Full node + Config) An Clearweb and onion website with Bitcoin Core running on the back end.
Exchange Api’s (3rd party) or should they run a Fullnode. I wouldn’t rely on a public APIs, not only, because they are unreliable but if I want to hide my server, then I can only do requests to them with Tor and I noticed many times these APIs suddenly stop accepting requests over Tor or using all kind of rate limiting. 3rd party services, I don't have any issues with it. But some people suggested that it might be less secure than using a wallet locally on my server. I think the best option is running your own full node (e.g. bitcoin core) and then on your server connect to it using JSON-RPC to generate addresses and request payments. it’s just provide realiability, and more privacy.
A website mixer, they don’t provide much privacy, due to amount correlation and the wallets those are being used to interact with you are also terrible from a privacy point of view. Failing this, they want to at least have fixed denominations for your mixer, so it’d at least provide some privacy. Eg. enable mixing 0.01/ , 0.1 and 1 bitcoins, and don’t let them do something like 0.12353243 btc to be mixed, since Blockchain analysis can identify the transactions related to the mixer and based on simple amount analysis would easily reestablish the links.
Kind regards and thanks for the help
Alex
submitted by alexjitsu to btc [link] [comments]

Iquidus Block Explorer Guide

Pre-requisites: - Rent Server - Connect with SSH/PuTTY

Iquidus "An open source block explorer" https://github.com/iquidus/explorer

Node and Iquidus Explorer Setup for Dummies https://gist.github.com/zeronug/5c66207c426a1d4d5c73cc872255c572

1. Install & Configure BiblePay https://www.reddit.com/BiblePay/comments/6ummuj/how_to_mine_biblepay_on_linux/
After Installing the coin, Add RPC & Server settings:
vi biblepay.conf rpcuser=XXXX rpcpassword=XXXX rpcport=XXXX listen=1 server=1 daemon=1 txindex=1 

2. Install MongoDB https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6 echo "deb [ arch=amd64,arm64 ] http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list sudo apt-get update sudo apt-get install -y mongodb-org sudo service mongod start cd /valog/mongodb tail mongod.log # [initandlisten] waiting for connections on port  # Port 27017 by default 
3. Setup MongoDB
mongo use explorerdb db.createUser( { user: "iquidus", pwd: "3xp!0reR", roles: [ "readWrite" ] } ) exit 
4. Install Node.js
sudo apt-get update sudo apt-get install nodejs nodejs-legacy -y sudo apt-get install npm 
5. Install Iquidis Block Explorer
cd home/username git clone https://github.com/iquidus/explorer explorer # gyp build errors # https://github.com/nodejs/node-gyp/issues/809 sudo apt-get install libkrb5-dev cd explorer && npm install --production cp ./settings.json.template ./settings.json 
5.a Add Custom Fix for vout bug
https://github.com/DeckerSU/explorecommit/ac74e41c6162871fcaa6973d34f09f1cf3e5a1ce https://github.com/cryptorex/bitcoinz-explorecommit/267a0dfd8015bc90488b2b53ae9c49be2da83bff
6. Configure Iquidis
vi settings.json 
a. Name, Symbol, Theme
b. Port (and Open for Firewall)
c. MongoDB Credentials
d. RPC Wallet Credentials
e. Genesis Block (showblock 0, hash=block, tx=tx) https://en.bitcoin.it/wiki/Genesis_block
f. CCEX Market https://support.coinigy.com/hc/en-us/articles/360001143574-How-do-I-find-my-API-key-on-the-C-Cex-Exchange-
e. Icon and Logo /images/logo.png 128x128 /public/favicon.ico 16x16 Upload files online and use "wget URL" command to download http://digitalagencyrankings.com/iconogen/
7. Sync Initial Database
cd home/username/biblepay/src ./biblepayd -daemon -txindex cd home/username/explorer npm start 
Open a 2nd SSH/Putty session and connect, in 2nd window run:
cd home/username/explorer sudo node scripts/sync.js index update 
Open web browser and enter in your servers address: IPAddress:Port
8. Troubleshooting
Ctrl + C to stop npm process
__
If Settings/Config is wrong: Edit exploresettings.json
__
If Database is corrupt:
mongo use explorerdb show collections 
Examples: db.collectionName.find() db.collectionName.remove({}) db.collectionName.drop()
Reset all Database Data:
db.addresses.remove({}) db.addresses.drop() db.coinstats.remove({}) db.coinstats.drop() db.markets.remove({}) db.markets.drop() db.peers.remove({}) db.peers.drop() db.richlists.remove({}) db.richlists.drop() db.txes.remove({}) db.txes.drop() exit 
__
"Trying to reindex and getting error Script already running" https://github.com/iquidus/exploreissues/11
rm tmp/index.pid 
__
Stop Everything:
sudo service mongod stop sudo killall nodejs #Comment out crontab -e 
__
Run npm start in explorer folder to start explorer again
9. Add Crontab and Run!
sudo crontab -e 
Add lines:
*/1 * * * * cd /path/to/explorer && /usbin/nodejs scripts/sync.js index update > /dev/null 2>&1 */2 * * * * cd /path/to/explorer && /usbin/nodejs scripts/sync.js market > /dev/null 2>&1 */5 * * * * cd /path/to/explorer && /usbin/nodejs scripts/peers.js > /dev/null 2>&1 
If the BiblePay isnt already running, run it
cd home/username/biblepay/src ./biblepayd -daemon -txindex 
If Explorer isnt already running, run it
cd home/username/explorer npm start 
Recommendation:*
Add these parameters to biblepay.conf file
daemon=1 txindex=1 
Extra: This Iquidis for Dummides guide also adds: https://gist.github.com/zeronug/5c66207c426a1d4d5c73cc872255c572
Upstart, to have MongoDB auto start after reboots
Forever, to make sure Explorer is always running
Install Forever to keep the js running # sudo npm install forever -g # sudo npm install forever-monitor Start the Explorer # forever start bin/cluster 
Nginx - Reverse Proxy Port 3001 to 80 https://eladnava.com/binding-nodejs-port-80-using-nginx/
BiblePay Daemon set to run Every 2 Minutes with Cron
sudo crontab -e */2 * * * * /home/biblepay/src/biblepayd > /dev/null 2>&1 
Note: In ~/.biblepaycore/biblepay.conf add daemon=1 and txindex=1 Note: > /dev/null 2>&1 will capture both STDOUT (1) and STDERR (2) and send them to /dev/null
Auto Remove index.pid if indexing is complete
#!/bin/bash fname="/home/biblepay/exploretmp/index.pid" if [[ -f "$fname" ]]; then pid=$( /dev/null r=$? echo $r if [ $r -eq 0 ]; then exit 1 else rm $fname fi fi 
-f is checking if the file exists index.pid is the indexing lock file with its process ID number inside of it ps -p checks if the process is running $? is the value of the last output that ran and since the previous value is going to dev/null, its the exit code status "0 for successful executions and 1 or higher for failed executions." and so if the process is still running, the bash script just exits, otherwise the process is done and the index.pid file gets removed the file doesnt need a .sh extension, if you have "#!/bin/bash" at the top then linux knows its a bash script chmod +x to set it as executable
Github Source Code Files:
https://github.com/togoshigekata/biblepay-files/blob/masteexplorer-settings-togo.json
https://github.com/togoshigekata/biblepay-files/blob/masteexplorer-index-resetter-togo.sh
My Crontab:
*/2 * * * * cd /home/explorer && /usbin/nodejs --stack-size=15000 scripts/sync.js index update > /dev/null 2>&1 */6 * * * * cd /home/explorer && /usbin/nodejs scripts/sync.js market > /dev/null 2>&1 */11 * * * * cd /home/explorer && /usbin/nodejs scripts/peers.js > /dev/null 2>&1 */5 * * * * /home/biblepay/src/biblepayd > /dev/null 2>&1 */4 * * * * /home/explorer-index-resetter-togo.sh > /dev/null 2>&1 0 */3 * * * /ussbin/service mongod start > /dev/null 2>&1 
Experimental: https://github.com/iquidus/exploreissues/236
submitted by togoshige to BiblePay [link] [comments]

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