Rpcclient Commands - btlc.biscucina.it

Monthly Nano News: December 2019 + Year Recap Special

This is what NANO has been up to lately. I don't think I lie if I say it has been quite an amazing year!
See you soon and happy new year! Something nice is coming soon that I have been working on for a while, stay tuned..

December 2019

November 2019

October 2019

September 2019

August 2019

July 2019

June 2019

May 2019

Apr 2019

Mar 2019

Feb 2019

Jan 2019


More news here: https://nanolinks.info/news

https://preview.redd.it/9sw5nkoxlt741.png?width=749&format=png&auto=webp&s=3426d4eafb9430c0304a6d161596102536df4318
submitted by Joohansson to nanocurrency [link] [comments]

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]

No one is using my ElectrumX Server

I've had an ElectrumX Server set up, running and accessible over the Internet for almost two months and, judging from the logs, I'm the only person who's accessed it. Is this normal, or have I configured something incorrectly?
My node is listening for SSL on port 50002, with a letsencrypt certificate. I've got a cloudflare DNS record for bitcoin.mydomain pointing at my public IP and I have tested this on electrum clients on Internet connected machines (specifically ones not connected to my LAN) and it works fine. I have to type the domain name into the server selection box, though, it hasn't yet appeared on the list of peers the client picks up automatically in one of my test scenarios. This makes me suspect I'm not advertising my server correctly.
Here are the relevant parts of my elextrumx.conf:
# Peer networking PEER_DISCOVERY = on PEER_ANNOUNCE = on # Services SERVICES = rpc://localhost:8000,ssl://:50002 REPORT_SERICES = ssl://bitcoin.*mydomain*:50002 # TLS settings SSL_CERTFILE=/etc/letsencrypt/live/bitcoin.*mydomain*/fullchain.pem SSL_KEYFILE=/etc/letsencrypt/live/bitcoin.*mydomain*/privkey.pem 
Looks fine to me, which makes me suspect something else must be going on. Or, no one cares about using my node...
Anyone any ideas?
Many thanks.
submitted by notjustaprettybeard to Electrum [link] [comments]

Darwinia development team Itering wins funding from Web3 Foundation

Darwinia development team Itering wins funding from Web3 Foundation

https://preview.redd.it/9wjacfdet2g41.jpg?width=750&format=pjpg&auto=webp&s=f2344aa2383ac3d6f5fe54c21cbdd921964e5040
Web3 Foundation announced a new list of W3F Grants for its funding plan. The project Scale submitted by the Darwinia development team Itering(www.itering.io), who has received the investment support of Web3 Foundation and has become the officially recognized project of the Web3 ecosystem and Polkadot.

What is Scale

Scale is a substrate JSON-RPC API client and libraries implemented in ruby language for general use. It contains the implementation of low-level data formats, various substrate types and also supports metadata. This work is the prerequisite of our subsequent series of projects. We hope to easily access Polkadot and Substrate through our familiar language ruby, such that the applications based on Polkadot / Substrate can be developed at a fast pace. We plan to develop some substrate-based web games. The back end of these applications is prepared to be developed in ruby language, and then interact with nodes or synchronize data through RPC.

About Itering

Itering (www.itering.io) is a blockchain technology company founded in Singapore in 2018. Most of people in this company are senior blockchain developers and experts in the blockchain core technology and participate in the development the open source projects of Bitcoin, Ethereum, NEO, etc. The blockchain core development is the most important part of current development, especially the cross chain technology.
The Darwinia Network is also developed by Itering and focus on the assets exchange and help blockchain applications cross-chain. The first integration part of Darwinia Network facing on gaming is Evolution Land, which is also developed by Itering in 2018 to 2019, and have Ethereum Land and Tron Land. The goal of Itering is to promote the massive adoption of blockchain and iterate to a trust-free future. The Scale is the first big step in blockchain games and Evolution Land, and also let the Darwinia Network move much forwards to the goal.

Following Us

ITERING: https://www.itering.io/ DARWINIA: https://darwinia.network/ Twitter: https://twitter.com/DarwiniaNetwork Telegram: https://t.me/DarwiniaNetwork
submitted by sixige to dot [link] [comments]

Era Swap Network White Paper

Era Swap Network White Paper

Era Swap Network

White Paper



DISCLAIMER
This Whitepaper is for Era Swap Network. Its purpose is solely to provide prospective community members with information about the Era Swap Ecosystem & Era Swap Network project. This paper is for information purposes only and does not constitute and is not intended to be an offer of securities or any other financial or investment instrument in any jurisdiction.
The Developers disclaim any and all responsibility and liability to any person for any loss or damage whatsoever arising directly or indirectly from (1) reliance on any information contained in this paper, (2) any error, omission or inaccuracy in any such information, or (3) any action resulting therefrom
Digital Assets are extremely high-risk, speculative products. You should be aware of the risks involved and fully consider before participating in Digital assets whether it’s appropriate for you. You should only participate if you are an experienced investor with sophisticated knowledge of financial markets and you fully understand the risks associated with digital assets. We strongly advise you to take independent professional advice before making any investment or participating in any way. You should check what rules and protections apply to your respective jurisdictions before investing or participating in any way. The Creators & community will not compensate you for any losses from trading, investment or participating in any way. You should read whitepaper carefully before participating and consider whether these products are right for you.

TABLE OF CONTENT

· Abstract
· Introduction to Era Swap Network
· Development Overview
· Era Swap Utility Platform
· Alpha-release Development Plan
· Era Swap Network Version 1: Specification
· Bunch Structure: 10
· Converting ES-ERC20 to ES-Na:
· Conclusion:
· Era Swap Ecosystem
· Social Links

Abstract

The early smart contracts of Era Swap Ecosystem like TimeAlly, Newly Released Tokens, Assurance, BetDeEx of Era Swap Ecosystem, are deployed on Ethereum mainnet. These smart contracts are finance-oriented (DeFi), i.e. most of the transactions are about spending or earning of Era Swap tokens which made paying the gas fees in Ether somewhat intuitive to the user (withdrawal charges in bank, paying tax while purchasing burgers) but transactions that are not token oriented like adding a nominee or appointee voting also needs Ether to be charged. As more Era Swap Token Utility platform ideas kept appending to the Era Swap Main Whitepaper, more non-financial transaction situations arise like updating status, sending a message, resolving a dispute and so on. Paying extensively for such actions all day and waiting for the transaction to be included in a block and then waiting for enough block confirmations due to potential chain re-organizations is counter-intuitive to existing free solutions like Facebook, Gmail. This is the main barrier that is stopping Web 3.0 from coming to the mainstream.
As alternatives to Ethereum, there are few other smart contract development platforms that propose their own separate blockchain that features for higher transaction throughput, but they compromise on decentralization for improving transaction speeds. Moreover, the ecosystem tools are most advancing in Ethereum than any other platform due to the massive developer community.
With Era Swap Network, the team aims to achieve scalability, speed and low-cost transactions for Era Swap Ecosystem (which is currently not feasible on Ethereum mainnet), without compromising much on trustless asset security for Era Swap Community users.

Introduction to Era Swap Network

Era Swap Network (ESN) aims to solve the above-mentioned problems faced by Era Swap Ecosystem users by building a side-blockchain on top of Ethereum blockchain using the Plasma Framework.
Era Swap Network leverages the Decentralisation and Security of Ethereum and the Scalability achieved in the side-chain, this solves the distributed blockchain trilema. In most of the other blockchains, blocks are a collection of transactions and all the transactions in one block are mined by a miner in one step. Era Swap Network will consist of Bunches of Blocks of Era Swap Ecosystem Transactions.

Decentralization

Layer 2


Scalable and Secure

A miner mines all the blocks in a bunch consequently and will commit the bunch-root to the ESN Plasma Smart Contract on Ethereum mainnet.

Development Overview
Initially, we will start with a simple Proof-of-Authority (PoA) based consensus of EVM to start the development and testing of Era Swap Ecosystem Smart Contracts as quickly as possible on the test-net. We will call this as an alpha-release of ESN test-net and only internal developers will work with this for developing smart contracts for Era Swap Ecosystem. User’s funds in a Plasma implementation with a simple consensus like PoA are still secured as already committed bunch-roots cannot be reversed.
Eventually, we want to arrive on a more control-decentralized consensus algorithm like Proof-of-Stake (PoS) probably, so that even if the chain operator shuts down their services, a single Era Swap Ecosystem user somewhere in the world can keep the ecosystem alive by running software on their system and similarly more people can join to decentralize the control further. In this PoS version, we will modify the Parity Ethereum client in such a way, that at least 50% of transaction fees collected will go to the Luck Pool of NRT Smart Contract on Ethereum mainnet and rest can be kept by miner of the blocks/bunch of blocks if they wish. After achieving such an implementation, we will release this as a beta version to the community for testing the software on their computers with Kovan ERC20 Era Swaps (Ethereum test-net).

Era Swap Decentralised Ecosystem
Following platforms are to be integrated:
  1. Era Swap Token Contract (adapted ERC20 on Ethereum) The original asset will lie on Ethereum to avoid loss due to any kind of failure in ESN.
  2. Plasma Manager Contract (on Ethereum) To store ESN bunch headers on Ethereum.
  3. Reverse Plasma Manager Contract (on ESN) Bridge to convert ES to ES native and ES native to ES. User deposits ES on Mainnet Plasma, gives proof on ESN and gets ES native credited to their account in a decentralised way.
  4. NRT Manager Contract (on Ethereum or on ESN) If it is possible to send ES from an ESN contract to luck pool of NRT Manager Contract on Ethereum, then it’s ok otherwise, NRT Manager will need to be deployed on ESN for ability to add ES to luck pool.
  5. Era Swap Wallet (React Native App for managing ESs and ES natives) Secure wallet to store multiple private keys in it, mainly for managing ES and ES native, sending ES or ES native, also for quick and easy BuzCafe payments.
  6. TimeAlly (on Ethereum or on ESN) On whichever chain NRT Manager is deployed, TimeAlly would be deployed on the same chain.
  7. Assurance (on Ethereum or on ESN) On whichever chain NRT Manager is deployed, TimeAlly would be deployed on the same chain.
  8. DaySwappers (on ESN) KYC manager for platform. For easily distributing rewards to tree referees.
  9. TimeSwappers (on ESN) Freelance market place with decentralised dispute management.
  10. SwappersWall (on ESN) Decentralised social networking with power tokens.
  11. BuzCafe (on ESN) Listing of shops and finding shops easily and quick payment.
  12. BetDeEx (on ESN) Decentralised Prediction proposals, prediction and results.
  13. DateSwappers (on ESN) Meeting ensured using cryptography.
  14. ComputeEx (on Ethereum / centralised way) Exchange assets.
  15. Era Swap Academy (on ESN / centralised way) Learn. Loop. Leap. How to implement ES Academy is not clear. One idea is if content is constantly being modified, then subscription expired people will only have the hash of old content while new content hash is only available to people who have done Dayswapper KYC and paid for the course. Dayswapper KYC is required because this way people won’t share their private keys to someone else.
  16. Value of Farmers (tbd) The exchange of farming commodities produced by farmers in VoF can be deposited to warehouses where the depositors will get ERC721 equivalent tokens for their commodities (based on unique tagging).
  17. DeGameStation (on ESN) Decentralised Gaming Station. Games in which players take turns can be written in Smart Contract. Games like Chess, Poker, 3 Patti can be developed. Users can come to DeGameStation and join an open game or start a new game and wait for other players to join.

Alpha-release Development Plan
  1. Deploying Parity Node customized according to Era Swap Whitepaper with PoA consensus.
  2. Setting up Plasma Smart Contracts.
  3. Creating a bridge for ERC20 Swap from Ethereum test-net to ESN alpha test-net.

Alpha Version
Era Swap Network Version 1 : Specification
The Version 1 release of ESN plans to fulfill the requirements for political decentralisation and transparency in dApps of Era Swap Ecosystem using Blockchain Technology. After acquiring sufficient number of users, a version 2 construction of ESN will be feasible to enable administrative decentralization, such that the Era Swap Ecosystem will be run and managed by the Era Swap Community and will no longer require the operator to support for it's functioning.
Era Swap Network (ESN) Version 1 will be a separate EVM-compatible sidechain attached to Ethereum blockchain as it’s parent chain. ESN will achieve security through Plasma Framework along with Proof-of-Authority consensus for faster finality. The idea behind plasma framework is to avoid high transaction fees and high transaction confirmation times on Ethereum mainnet by instead doing all the ecosystem transactions off-chain and only post a small information to an Ethereum Smart Contract which would represent hash of plenty of ecosystem transactions. Also, to feature movement of Era Swap Tokens from Ethereum blockchain to ESN using cryptographic proof, reverse plasma of Ethereum on ESN will be implemented.
Also, submitting hash of each ESN blocks to ESN Plasma Smart Contract on Ethereum would force ESN to have a block time equal to or more than Ethereum’s 15 second time as well as it would be very much costly for operator to post lot of hashes to an Ethereum Smart Contract. This is why, merkle root of hashes of bunch of blocks would instead be submitted to ESN Plasma Smart Contact on Ethereum.
Actors involved in the ESN:
  1. Block Producer Nodes Lesser the number of nodes, quicker is the block propagation between block producers which can help quick ecosystem transactions. We find that 7 block producers hosted on different could hosting companies and locations reduces the risk of single point of failure of Era Swap Ecosystem and facilitates 100% uptime of dApps. Block Producer Nodes will also be responsible to post the small information to the Blockchain.
  2. Block Listener Nodes Rest of the nodes will be Block Listeners which will sync new blocks produced by the block producer nodes. Plenty of public block listener nodes would be setup in various regions around the world for shorter ping time to the users of Era Swap Ecosystem. Users would submit their Era Swap Ecosystem transactions to one of these public nodes, which would relay them to rest of the Era Swap Network eventually to the block producer nodes which would finalize a new block including the user transaction.
  3. Bunch Committers This will be an instance in the block producers which will watch for new blocks confirmed on ESN and will calculate bunch merkle roots and will submit it to ESN Plasma Smart Contract. This instance will also post hash of new Ethereum blocks to ESN (after about 10 confirmations) for moving assets between both the blockchain.
  4. Users These will be integrating with dApps which would be connected to some public ESN nodes or they can install a block listner node themselves. They can sign and send transactions to the node which they are connected to and then that node will relay their transactions to block producer nodes who would finalise a block including their transaction.

Bunch Structure

A Bunch Structure in Smart Contract will consist of the following:
• Start Block Number: It is the number of first ESN block in the bunch.
• Bunch Depth: It is Merkle Tree depth of blocks in the bunch. For e.g. If bunch depth is 3, there would be 8 blocks in the bunch and if bunch depth is 10, there would be 1024 blocks in the bunch. Bunch depth of Bunches on ESN Plasma Contract is designed to be variable. During the initial phases of ESN, it would be high, for e.g. 15, to avoid ether expenditure and would be decreased in due course of time.
• Transactions Mega Root: This value is the merkle root of all the transaction roots in the bunch. This is used by Smart Contract to verify that a transaction was sent on the chain.
• Receipts Mega Root: This value is the merkle root of all the receipt roots in the bunch. This is used to verify that the transaction execution was successful.
• Timestamp: This value is the time when the bunch proposal was submitted to the smart contract. After submission, there is a challenge period before it is finalised.

Converting ES-ERC20 to ERC-NA and BACK

On Ethereum Blockchain, the first class cryptocurrency is ETH and rest other tokens managed by smart contracts are second class. On ESN, there is an advancement to have Era Swaps as the first class cryptocurrency. This cryptocurrency will feature better user experience and to differentiate it from the classic ERC20 Era Swaps, it will be called as Era Swap Natives (ES-Na). According to the Era Swap Whitepaper, maximum 9.1 Million ES will exist which will be slowly released in circulation every month.
Era Swaps will exist as ES-ERC20 as well as in form of ES-Na. One of these can be exchanged for the other at 1:1 ratio.
Following is how user will convert ES-ERC20 to ES-Na:
  1. User will give allowance to a Deposit Smart Contract, and following that call deposit method to deposit tokens to the contract.
  2. On transaction confirmation, user will paste the transaction hash on a portal which will generate a Proof of Deposit string for the user. This string is generated by fetching all the transactions in the Ethereum Block and generating a Transaction Patricia Merkle Proof to prove that user’s transaction was indeed included in the block and the Receipts Patricia Merkle Proof to confirm that the user’s transaction was successful.
  3. Using the same portal, user will submit the generated proofs to a Smart Contract on ESN, which would release funds to user. Though, user will have to wait for the Etheruem block roots to be posted to ESN after waiting for confirmations which would take about 3 minutes. Once, it’s done user’s proofs will be accepted and will receive exact amount of ES- Na on ESN.
Following is how user will convert ES-Na to ES-ERC20:
  1. ES-Na being first class cryptocurrency, user will simply send ES-Na to a contract.
  2. User will paste the transaction hash on a portal which will generate a Proof of Deposit for the user. Again ES-Na being first class cryptocurrency, Transaction Patricia Merkle Proof is enough to prove that user’s transaction was indeed included in the block. Another thing which will be generated is the block inclusion proof in the bunch.
  3. User will have to wait for the bunch confirmation to the Plasma Smart Contract and once it’s done, user can send the proof to the Plasma Smart Contract to receive ES-ERC20.

HARD Exit

Since the blocks are produced and transactions are validated by few block producers, it exposes a possibility for fraud by controlling the block producer nodes. Because ESN is based on the Plasma Model, when failure of sidechain occurs or the chain halts, users can hard exit their funds directly from the Plasma Smart Contract on Ethereum by giving a Proof of Holdings.

HOld ES Tokens Swapping with New ES Tokens

The old ES Tokens will be valueless as those tokens will not be accepted in ESN because of NRT (New Released Tokens) and TimeAlly contracts on mainnet which is causing high gas to users, hence reducing interactions. Also, there was an event of theft of Era Swap Tokens and after consensus from majority of holders of Era Swap Tokens; it was decided to create a new contract to reverse the theft to secure the value of Era Swap Tokens of the community. Below is the strategy for swapping tokens:
TimeAlly and TSGAP: Majority of Era Swap Community have participated in TimeAlly Smart Contract in which their tokens are locked for certain period of time until which they cannot move them. Such holders will automatically receive TimeAlly staking of specific durations from the operator during initialization of ESN.
Liquid Tokens: Holders of Liquid Era Swap Tokens have to transfer the old tokens to a specified Ethereum wallet address managed by team. Following that, team will audit the token source of the holder (to eliminate exchange of stolen tokens) and send new tokens back to the wallet address.

Post-Genesis Tokens Return Program

Primary asset holding of Era Swap tokens will exist on Ethereum blockchain as an ERC20 compatible standard due to the highly decentralised nature of the blockchain. Similar to how users deposit tokens to an cryptocurrency exchange for trading and then withdraw the tokens back, users will deposit tokens to ESN Contract to enter Era Swap Ecosystem and they can withdraw it back from ESN Contract for exiting from ecosystem network. The design of the token system will be such that, it will be compatible with the future shift (modification or migration of ESN version 1) to ESN version 2, in which an entirely new blockchain setup might be required.
To manage liquidity, following genesis structure will be followed:

Holder ES-ERC20 ES-Na
Team Wallet 1.17 billion (Circulating Supply) 0
Locked in Smart Contract 7.93 billion (pending NRT releases) 9.1 billion
Though it looks like there are 9.1 * 2 = 18.2 Billion ES, but the cryptographic design secures that at any point in time at least a total of 9.1 billion ES (ES-ERC20 + ES-Na) will be locked. To unlock ES-Na on ESN, an equal amount of ES-ERC20 has to be locked on Ethereum and vice-versa.
9.1 billion ES-ERC20 will be issued by ERC20 smart contract on Ethereum Blockchain, out of which the entire circulating supply (including liquid and TimeAlly holdings) of old ES will be received to a team wallet.
TimeAlly holdings of all users will be converted to ES-Na and distributed on ESN TimeAlly Smart Contract by team to the TimeAlly holders on their same wallet address.
Liquid user holdings will be sent back to the users to the wallet address from which they send back old ES tokens (because some old ES are deposited on exchange wallet address).
ES-Na will be issued in the genesis block to an ESN Manager Smart Contract address. It will manage all the deposits and withdrawals as well as NRT releases.

Attack Vectors


Following are identified risks to be taken care of during the development of ESN:
Network Spamming: Attackers can purchase ES from the exchange and make a lot of transactions between two accounts. This is solved by involving gas fees. A setting of 200 nanoES minimum gas price will be set, which can be changed as per convenience.
DDoS: Attackers can query public nodes for computationally heavy output data. This will overload the public node with requests and genuine requests might get delayed. Block producers RPC is private, so they will continue to produce blocks. To manage user’s denial of service, the provider in dApps needs to be designed in such a way such that many public nodes will be queried simple information (let’s say latest block number) and the one which response quickly to user will be selected.
AWS is down: To minimize this issue due to cloud providers down, there will be enough nodes on multiple cloud providers to ensure at least one block producer is alive.
User deposit double spending: User deposits ES on Ethereum, gets ES-Na on ESN. Then the issue happens that there are re-org on ETH mainnet and the user’s transaction is reversed. Since ETH is not a fixed chain and as per PoW 51% attack can change the blocks. As Ethereum is now enough mature and by statistics forked blocks are at most of height 2. So it is safe to consider 15 confirmations.
Exit Game while smooth functioning: User starts a hard exit directly from Plasma Smart Contract on Ethereum, then spends his funds from the plasma chain too. To counter this, the exit game will be disabled, only when ESN halts, i.e. fails to submit block header within the time the exit game starts. This is because it is difficult to mark user’s funds as spent on ESN.
Vulnerability in Ecosystem Smart Contracts: Using traditional methods to deploy smart contracts results in a situation where if a bug is found later, it is not possible to change the code. Using a proxy construction for every ecosystem smart contract solves this problem, and changing a proxy can be given to a small committee in which 66% of votes are required, this is to prevent a malicious change of code due to compromising of a single account or similar scenario.
ChainID replay attacks: Using old and traditional ways to interact with dApps can cause loss to users, hence every dApp will be audited for the same.

Conclusion

Era Swap Network is an EVM-compatible sidechain attached to the Ethereum blockchain through Plasma Framework. This allows off-chain processing of Era Swap Ecosystem transactions and posting only the hash of the bunch to Ethereum. This greatly reduces the high network fee and confirmation time issues faced by the current Era Swap Ecosystem DApps deployed on Ethereum. Also, having a separate EVM-compatible blockchain tailored to Era Swap Ecosystem improves the user experience to a higher extent. Since by design, Plasma Framework makes the Era Swap Network as secure as the Ethereum Network, user's funds on the network would be secure as well.
We believe Era Swap Network will help scale dApps of Era Swap Ecosystem to onboard the increasing numbers of users.


Era Swap Ecosystem
Era Swap Ecosystem consist of multiple interlinked platforms which is powered by Era swap (ES) token, a decentralized utility token to be used on below utility platforms. Users can access the Platforms through Era Swap Life which is the Single Sign on (SSO) gateway to the one world of Era Swap Ecosystem.
Era Swap Life: https://eraswap.life/
TimeAlly DApp -> Decentralized Token Vesting: https://www.timeally.io/
BetDeEx -> Decentralized prediction platform: https://www.betdeex.com/
Swappers Wall -> Social Time Ledgerise: https://timeswappers.com/swapperswall
TimeSwappers -> Global P2P marketplace: https://timeswappers.com/
BuzCafe -> Connects local P2P outlets: https://buzcafe.com/
DaySwappers -> Unique Affiliate Program: https://dayswappers.com/
Era Swap Academy -> E-mart for skill development: https://eraswap.academy/
Value of Farmers (VOF) -> Farming ecosystem: http://valueoffarmers.org/ coming soon
ComputeEx -> P2P lending and borrowing: https://computeex.net/ coming soon
DateSwappers -> Next gen dating: coming soon
Smart Contract address

Era Swap Token (ES)
https://etherscan.io/address/0xef1344bdf80bef3ff4428d8becec3eea4a2cf574#code

Newly Released Token (NRT) https://etherscan.io/address/0x20ee679d73559e4c4b5e3b3042b61be723828d6c#code

TimeAlly DApp
https://etherscan.io/address/0x5630ee5f247bd6b61991fbb2f117bbeb45990876#code

BetDeEx DApp https://etherscan.io/address/0x42225682113E6Ed3616B36B4A72BbaE376041D7c#code
TSGAP DApp
https://etherscan.io/address/0xbad9af4db5401b7d5e8177a18c1d69c35fc03fd3#code

White Paper
Era Swap Whitepaper: https://eraswaptoken.io/pdf/eraswap_whitepaper.pdf
Era Swap Light Paper: https://eraswaptoken.io/pdf/eraswap_lightpaper.pdf

Howey Test
Howey Test: https://eraswaptoken.io/era-swap-howey-test-letter-august7-2018.php

Era Swap SOCIAL LINKS
Telegram: https://t.me/eraswap
Twitter: https://twitter.com/eraswaptec
Facebook: https://www.facebook.com/eraswap/
Instagram: https://www.instagram.com/eraswap/
BitcoinTalk: https://bitcointalk.org/index.php?topic=5025979.msg45502457
Youtube: https://www.youtube.com/channel/UCGCP4f5DF1W6sbCjS6y3T1g
LinkedIn: https://www.linkedin.com/company/eraswap/
Reddit: https://www.reddit.com/useEraSwap
Medium: https://medium.com/@eraswap
Tumblr: https://eraswap.tumblr.com/
Mix: https://mix.com/eraswap
Pinterest: https://www.pinterest.com/eraswapt/
GitHub: https://github.com/KMPARDS/EraSwapSmartContracts
submitted by EraSwap to u/EraSwap [link] [comments]

11-25 12:23 - 'I’m not sure why you are being down voted. The Dash Core team has been working very hard towards to the goals of the Dash Platform and are very close to pushing the final pieces of the foundation. / I know Dash is the bastard...' by /u/coingun removed from /r/Bitcoin within 493-503min

'''
I’m not sure why you are being down voted. The Dash Core team has been working very hard towards to the goals of the Dash Platform and are very close to pushing the final pieces of the foundation.
I know Dash is the bastard step child of this sub but still...
Dash Core v1.0 includes
Username based payments Decentralized API (DAPI) Decentralized data storage Development libraries and SDKs
Dash is very close to releasing an entire platform that many different types of Dapps will be built. If you are a bank and your infrastructure is out dated why not just rebuild your financial systems using the DAPI and DashDrive?
I’m keep my eye on Dash but damn there have been some Mis-steps in its past.
“DAPI, Dash’s Decentralized API Clients will be able to integrate their applications to Dash Platform via DAPI (dæ-pee), our distributed, decentralized API. DAPI is an HTTP API exposing JSON-RPC endpoints. Through these endpoints, developers will be able to send and retrieve application data via Drive, as well as query the blockchain, eventually replicating the functionality of Insight through a more developer-friendly interface. In effect, DAPI provides developers with the same access and security of a full node, without the cost and maintenance overhead.
Developers will use DAPI to submit state transitions for storage in Drive. The fees for submitting these state transitions will be comprised of a fixed transaction cost, similar to a normal transaction fee, and a variable cost determined by the size of the data being stored. In a typical p2p network, excessive leeching behavior can drain a network of its speed and efficiency. This free-rider problem is solved through our fee structure, which ensures that masternodes are adequately compensated at a level that supports the demands of the network.”
'''
Context Link
Go1dfish undelete link
unreddit undelete link
Author: coingun
submitted by removalbot to removalbot [link] [comments]

How To Set Up a Firewall Using FirewallD on CentOS 7

The majority of this definition is actually metadata. You will want to change the short name for the service within the tags. This is a human-readable name for your service. You should also add a description so that you have more information if you ever need to audit the service. The only configuration you need to make that actually affects the functionality of the service will likely be the port definition where you identify the port number and protocol you wish to open. This can be specified multiple times.
For our “example” service, imagine that we need to open up port 7777 for TCP and 8888 for UDP. By entering INSERT mode by pressing i , we can modify the existing data center in moldova definition with something like this:
/etc/firewalld/services/example.xml
  Example Service This is just an example service. It probably shouldn't be used on a real system.    
Press ESC , then enter :x to save and close the file.
Reload your firewall to get access to your new service:
sudo firewall-cmd --reload 
You can see that it is now among the list of available services:
firewall-cmd --get-services outputRH-Satellite-6 amanda-client amanda-k5-client bacula bacula-client bitcoin bitcoin-rpc bitcoin-testnet bitcoin-testnet-rpc ceph ceph-mon cfengine condor-collector ctdb dhcp dhcpv6 dhcpv6-client dns docker-registry dropbox-lansync elasticsearch example freeipa-ldap freeipa-ldaps freeipa-replication freeipa-trust ftp ganglia-client ganglia-master high-availability http https imap imaps ipp ipp-client ipsec iscsi-target kadmin kerberos kibana klogin kpasswd kshell ldap ldaps libvirt libvirt-tls managesieve mdns mosh mountd ms-wbt mssql mysql nfs nrpe ntp openvpn ovirt-imageio ovirt-storageconsole ovirt-vmconsole pmcd pmproxy pmwebapi pmwebapis pop3 pop3s postgresql privoxy proxy-dhcp ptp pulseaudio puppetmaster quassel radius rpc-bind rsh rsyncd samba samba-client sane sip sips smtp smtp-submission smtps snmp snmptrap spideroak-lansync squid ssh synergy syslog syslog-tls telnet tftp tftp-client tinc tor-socks transmission-client vdsm vnc-server wbem-https xmpp-bosh xmpp-client xmpp-local xmpp-server 
You can now use this service in your zones as you normally would.

Creating Your Own Zones

While the predefined zones will probably be more than enough for most users, it can be helpful to define your own zones that are more descriptive of their function server management in romania.
For instance, you might want to create a zone for your web server, called “publicweb”. However, you might want to have another zone configured for the DNS service you provide on your private network. You might want a zone called “privateDNS” for that.
When adding a zone, you must add it to the permanent firewall configuration. You can then reload to bring the configuration into your running session. For instance, we could create the two zones we discussed above by typing:
sudo firewall-cmd --permanent --new-zone=publicweb 
sudo firewall-cmd --permanent --new-zone=privateDNS
You can verify that these are present in your permanent configuration by typing:
sudo firewall-cmd --permanent --get-zones outputblock dmz drop external home internal privateDNS public publicweb trusted work 
As stated before, these won’t be available in the current instance of the firewall yet:
firewall-cmd --get-zones outputblock dmz drop external home internal public trusted work 
Reload the firewall to bring these new zones into the active configuration:
sudo firewall-cmd --reload 
firewall-cmd --get-zones outputblock dmz drop external home internal privateDNS public publicweb trusted work
Now, you can begin assigning the appropriate services and ports to your zones. It’s usually a good idea to adjust the web hosting in moldova active instance and then transfer those changes to the permanent configuration after testing. For instance, for the “publicweb” zone, you might want to add the SSH, HTTP, and HTTPS services:
sudo firewall-cmd --zone=publicweb --add-service=ssh 
sudo firewall-cmd --zone=publicweb --add-service=http sudo firewall-cmd --zone=publicweb --add-service=https sudo firewall-cmd --zone=publicweb --list-all outputpublicweb target: default icmp-block-inversion: no interfaces: sources: services: ssh http https ports: protocols: masquerade: no forward-ports: source-ports: icmp-blocks: rich rules:
Likewise, we can add the DNS service to our “privateDNS” zone:
sudo firewall-cmd --zone=privateDNS --add-service=dns 
sudo firewall-cmd --zone=privateDNS --list-all outputprivateDNS interfaces: sources: services: dns ports: masquerade: no forward-ports: icmp-blocks: rich rules:
We could then change iaas platform in romania our interfaces over to these new zones to test them out:
sudo firewall-cmd --zone=publicweb --change-interface=eth0 
sudo firewall-cmd --zone=privateDNS --change-interface=eth1
At this point, you have the opportunity to test your configuration. If these values work for you, you will want to add the same rules to the permanent configuration. You can do that by re-applying the rules with the --permanent flag:
sudo firewall-cmd --zone=publicweb --permanent --add-service=ssh 
sudo firewall-cmd --zone=publicweb --permanent --add-service=http sudo firewall-cmd --zone=publicweb --permanent --add-service=https sudo firewall-cmd --zone=privateDNS --permanent --add-service=dns
After permanently applying these your rules, you can restart your hourly kvm vps in europe network and reload your firewall service:
sudo systemctl restart network 
sudo systemctl reload firewalld
Validate that the correct zones were assigned:
firewall-cmd --get-active-zones outputprivateDNS interfaces: eth1 publicweb interfaces: eth0 
And validate that the appropriate services are available for both of the zones:
sudo firewall-cmd --zone=publicweb --list-services outputhttp https ssh sudo firewall-cmd --zone=privateDNS --list-services outputdns 
You have successfully set up your dedicated server in romania! If you want to make one of these zones the default for other interfaces, remember to configure that behavior with the --set-default-zone= parameter:
sudo firewall-cmd --set-default-zone=publicweb 

Conclusion

You should now have a windows remote desktop fairly good understanding of how to administer the firewalld service on your CentOS system for day-to-day use.
The firewalld service allows you to configure reseller kvm vps program maintainable rules and rule-sets that take into consideration your network environment. It allows you to seamlessly transition between different firewall policies through the use of zones and gives administrators the ability to abstract the port management into more friendly service definitions. Acquiring a working knowledge of this system will allow you to take advantage of the kvm virtual server flexibility and power that this tool provides.
submitted by namemk to u/namemk [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]

February report on ConsenSys spoke developments

We've got a full report on what the spokes at ConsenSys have been up to. Check out more here.
EDIT: Fixed broken link (Infura - Investing in the Decentralization of Ethereum” - Thanks u/shazow!)

Alethio

A comprehensive suite of blockchain exploration, analysis, and forecasting products for the Ethereum network.

Allinfra

All infrastructure, for all — platform for the tokenization of large scale unlisted infrastructure.

Bounties Network

Freelance task fulfillment, paying out in any Ethereum token upon successful completion.

Decrypt Media

A daily news site covering all things crypto and the advent of the decentralized web.

Endjinn

Simulate your key token mechanisms to get on the awesome future usage timeline.

Fathom

A decentralized peer assessment protocol forming the foundation of a universal academic system.

Gitcoin

The easiest way to leverage the open source community to incentivize or monetize work.

Grid+

Leverages the public Ethereum blockchain to give consumers direct access to wholesale energy markets.

Helena

A decentralized platform for curated fundamental token research and analysis.

Infura

A scalable, standards-based, globally distributed cluster and API endpoint for Ethereum, IPFS, and other infrastructures.

Kaleido

An all-in-one enterprise SaaS platform that radically simplifies the creation and operation of secure blockchain networks and accelerates the journey from PoC to Production.

Kauri

The Ethereum community’s technical knowledge network.

Liquality

Swap cryptocurrencies without middlemen.

LitePaper

A simple knowledge base for the crypto-verse.

Meridio

A blockchain platform for creating, managing, and transferring fractional real estate ownership.

MetaMask

MetaMask is a browser extension that allows you to run Ethereum dApps right in your browser without running a full Ethereum node.

Nethereum

A .NET integration library for Ethereum allowing users to interact with Ethereum clients like Geth or Parity using RPC.

OpenLaw

A blockchain-based protocol for the creation and execution of legal agreements in a user-friendly, compliant way.

PegaSys

A protocol engineering team building Ethereum tech for the public chain community and leading enterprises.

Rhombus

Securely connects smart contracts with accurate, computable real-world data.

Truffle

A development environment, testing framework, and asset pipeline for Ethereum-based smart contracts and dapps.

TruSet

Building multi-sided marketplaces to collect, validate, publish, and commercialize business-critical reference data.

uPort

A self-sovereign identity management platform that allows users to register their own identity on Ethereum, send and request credentials, sign transactions, and securely manage keys and data.
submitted by ConsenSys_Socialite to ethereum [link] [comments]

Top 10 of The Biggest Cryptocurrency Hacks and Scams Ever

If you have been around the cryptocurrency industry long enough, you will know that one of the biggest risks faced by users is the loss of funds through hacks on cryptocurrency wallets and exchanges.
Online exchanges are prime targets for hackers and thieves on the internet. This is mainly because of the amount of funds that are kept on these platforms. For hackers that have succeeded in stealing funds from such platforms, the amounts are usually huge.
As much as individual users try to play their roles in securing their accounts by using personal passwords, PINs and codes, there is a higher layer of security that lies in the hands of the platform providers. Once this is breached, the individual security efforts become irrelevant.
Over the years, exchanges and wallets appear to have improved in terms of security as the frequency of hacks and platform breaches have reduced. What used to be a common occurrence in the industry has become a rare development, with hacks now few and far between.
Let’s take a look at the top 10 of the biggest cryptocurrency hacks and scams ever.

10. Bitcoin Gold ($18 Million)

In May 2018, the theoretical 51% attack possibility was proven in a heist that saw a breach in Bitcoin Gold which cost the protocol $18 million.
In this heist, hackers used 51% raw computing power to seize control of the network and carry out their ulterior plans effectively. Ciphertrace and other security outfits in the ecosystem believe that the algorithm weaknesses in Bitcoin Gold’s Proof of Work (PoW) transaction verification may have enabled the success of the theft.

9. Geth ($20 Million)

In June 2018, the Ethereum client Geth was hacked and ETH worth $20 million was stolen. This incidence was reported by blockchain security firm, Cyphertrace. During the hack, JSON-RPC port 8545 was exploited. This is the port that initiates ETH send transactions.
All the ETH wallets that were affected by this breach was drained by the thieves, accumulating to the quoted $20 million equivalence based on the price of ETH at that time.

8. Bancor ($23.5 Million)

In July 2018, about one month after the Geth incident, decentralized cryptocurrency exchange, Bancor was hacked and $23.5 million worth of crypto stolen. This particular event raised some eyebrows in the cryptocurrency industry, redefining the general opinion of decentralized exchanges being prone to hacking.
The process involved the exploitation of a security flaw in a wallet that was used to update some of the smart contracts on the exchange. Bancor, which was one of the most successful ICOs of 2017, raising $153 million during its token sale, was forced to shut down after the hack.

7. Coinrail ($40 Million)

Coinrail was hacked in June 2018, and $40 million was stolen from the exchange. The South Korean exchange which ranked among the top 100 exchanges by volume, suspended its services shortly after the hack.
According to sources from the exchange, the tokens that were stolen included NPXS tokens from the Pundi X project, ATC from Aston and the NPER project’s NPER token.
  1. Binance ($40.7 Million)
Binance exchange was hacked in May 2019 and 7,000 Bitcoins were stolen from the platform. The value of the Bitcoins stolen at the time was about $40.7 million.
To achieve their aim, hackers were able to steal API keys, two-factor codes and some other key information to access the wallets. According to the exchange, the incident impacted only about 2% of its total Bitcoin holdings as all other wallets are secure.
Affected wallets were promised a refund through the exchange’s Secure Asset Fund for Users (SAFU) arrangement. This is a policy that the exchange uses to prepare for rainy days. A portion of fees charged on the exchange is set aside in order to ensure that platform users do not bear the brunt during occurrences such as this.

5. Zaif ($60 Million)

Japan-based cryptocurrency exchange Zaif was hacked in September 2018 and $60 million was stolen in the process. The theft was possible after hackers gained authorised access into the exchanges hot wallets, making away with huge amounts of Bitcoin, Bitcoin Cash, and MonaCoin.
The exchange’s asset reserve could not cover the loss, therefore it reached an agreement with a Japan-listed firm called Fisco to receive a $44.5 million investment in exchange for a major share of ownership.

4. Bitfinex ($77 Million)

The Bitfinex hack of August 2016 was a popular event that rocked the entire cryptocurrency industry. The hack occurred at a time when cryptocurrencies appeared to be shifting gears in terms of awareness and development. As a matter of fact, the aftermath of the event saw the Bitcoin price drop by 20%.
After the hack, Bitfinex issued cryptographic tokens to its users that were affected by the hack, all of which the exchange announced to have bought back by April 2017.

3. BitGrail ($187 Million)

$187 million worth of Nano tokens were stolen from BitGrail in February 2018. The reported theft was announced weeks after the unauthorized transfer was initiated. This information was from evidence retrieved from the Nano blockchain explorer by skeptics.
While BitGrail recognized the concerns of it users, it however stated that it is impossible for it to refund the stolen amount.

2. Mt. Gox ($460 Million)

The Mt. Gox scandal remains one of the biggest stains on the cryptocurrency industry. In February 2014, Mt. Gox was hacked and as much as $460 million was stolen from the exchange. In the wake of this, the exchange’s CEO, Mark Karpeles issued a statement that accepted responsibility on behalf of his company.
“We had weaknesses in our system, and our bitcoins vanished. We’ve caused trouble and inconvenience to many people, and I feel deeply sorry for what has happened, “ he said.
At the time, Mt. Gox was the world’s largest Bitcoin exchange that looked impressive from the outside, but many who claimed to know about the internal workings accused the company of a messy combination of poor management, neglect, and raw inexperience.
The size of this event left a huge dent on the reputation of Bitcoin and the crypto industry at large. It took a long time before the market picked up again, and for users to regain confidence in the industry. The exchange has since gone down and ceased to exist.

1. Coincheck ($500 Million)

The biggest theft in the history of the cryptocurrency industry happened in January 2018, when Japan-based cryptocurrency exchange, Coincheck was hacked. A total of NEM tokens worth $500 million were stolen in the process.
A statement from the exchange accepted the blame and took responsibility for the breach. According to reports, rather than storing its customers’ assets in offline wallets, the assets were stored in hot wallets that were connected to the internet. Coincheck also reportedly failed to protect the wallets with standard multi-signature security protocols.
Having traced the destination of the stolen funds, NEM developers created a tracking tool that would allow exchanges to automatically reject stolen funds.

Conclusion

Hacks and massive theft of cryptocurrencies have contributed to the setback experienced by the technology. Each of the events takes a hit on the confidence of investors and willing participants who may not be sure of how the affected exchanges will handle the situation.
The industry is however learning from past experiences, as the frequency of such hacks have reduced, while in some cases, modalities are being put in place to ensure that end users do not bear the brunt of such events, just like the case of Binance.
The NEM developers’ response to the Coincheck hack has a way of rendering stolen funds unspendable, as long as other members of the community comply. However, no one knows how long this will last, and if the hackers will be able to nullify the traceability of the stolen coins yet.
The action by the developers will discourage hackers and thieves, but is yet to restore value to the end users whose funds have been stolen.
For the industry to grow as it should and become stable, security of funds need to be established. Exchanges and developers are continuously making efforts to ensure that funds and transactions within the industry remain safe at all times.
http://bitcoinadvisor.info/top-10-of-the-biggest-cryptocurrency-hacks-and-scams-eve?fbclid=IwAR1aKdbjF1HQpFQq3jH6PQptxt7mhXHJWsABPnlN5ZEjmq07ByMEYWvVezM
submitted by OliAustin101 to TopBottomCrypto [link] [comments]

DXCHAIN: big data meets blockchain (development progress)

Dxchain is world's first decentralized big data and machine learning network powered by a computing-centric blockchain.
Let's discuss it's development progress and project updates.
Dxchain is now an open source - debut of godx
You guys may be wondering “What’s Godx? What are the contents and features of the open-source code? What does open source really mean?”
What’s Godx? Godx is a blockchain project written by the DxChain team using Go. Currently, it supports 64-bit Linux and MacOS operating systems. It not only implements the common blockchain ledger system, but also implements a large-scale distributed storage system. Compared to traditional storage service providers, Godx is based on the blockchain tech that can provide users with more transparent, secure and efficient distributed storage services.
How can I access Godx open source? DxChain’s full open-source code for testing Network 3.0 is hosted on DxChain’s GitHub. Click this link to get the code: https://github.com/DxChainNetwork/Godx
Why open source? In the blockchain world, code is law, and it forms the community consensus on the blockchain. From now on, the DxChain Godx project is open source, which means that any engineer familiar with the go language can access the code through the provided link. This allows them to review its internal implementation logic, verify and modify the code, and compile their own executable file. It also means that no Trojan or backdoor virus can hide in the program to ensure that the project runs in a completely open and safe environment. The DxChain team is willing to work with community members to maintain this code-based law and build a healthy developer ecosystem.
Currently, DxChain uses GitHub as a platform for all code development and management. Starting today, the code modification and upgrade of all subsequent DxChain project developments will be carried out in a completely open and transparent environment. We welcome the supervision and inspection of team members from the global community. We will use actions to prove that DxChain is serious about its open-source code. I hope that every technology enthusiast can provide us with more valuable suggestions in order to improve our decentralized storage ecosystem!
What’s inside the Godx open source code? The Godx project is written in Go language and contains 1,706 go language source files, totaling 738,531 lines of code, which was developed by 8 main engineers. (For detailed indicators, please refer to GitHub statistics: https://github.com/DxChainNetwork/Godx/pulse The main module of the program includes general blockchain templates such as account, consensus, core, miner, p2p, rpc and evm, in addition to storage contract modules such as a storage client for storageclient and storagehost.
The high-quality code isn’t the only thing that makes this project outstanding. We believe that a clear and detailed document is equally as important in order to get developers started. The DxChain team provides community developers with detailed development updates and usage documentation. Throughout the project, use the tutorial found in the README.md document (https://github.com/DxChainNetwork/Godx). Developers can easily configure and install Godx code and experience DxChain storage and mining functions.
What are the features of the Godx project? The DxChain team has always been committed to using blockchain technology to provide solutions for data storage and computing problems. We will elaborate on the various futuristic tech innovations used in the project and bring you a taste of the future. This article will briefly introduce the following three aspects: EVM smart contracts, lightning network storage protocol and fast verification algorithm.
Compatibility with EVM Virtual Machine In the smart contract solution, the Ether-compatible virtual machine has 3 unique advantages. It is Turing complete, has DAPP development based on smart contracts, and its EVM platform is situated in the mainstream. The DxChain team has expanded ethereum’s original EVM and added a storage contract function while still being compatible with the original virtual machine commands. Therefore, developers can use both EVM and storage contract functions. The original Ethereum DAPP developers can directly compile the source code of their APP into Godx with almost no modification, which greatly reduces the development cost for the majority of developers.
Lightning Network Storage Protocol Since its launch, Lightning Network had the expectation to improve bitcoin transaction speed and scalability. In the algorithm of the offline file contract, the DxChain team also adopted a protocol similar to the lightning network channel. We call it the storage protocol. The storage protocol allows two parties who store the same file in the main chain to sign the contract, carry out the pledge fund and follow up on many detailed activities (such as uploading/downloading files) that can be implemented offline until the funds are settled by both parties. This means that even if there are huge files in the network that need to be stored, it can be quickly completed, without affecting the main chain, greatly improving storage performance and throughput efficiency.
Compatibility with EVM Virtual Machine In the smart contract solution, the Ether-compatible virtual machine has 3 unique advantages. It is Turing complete, has DAPP development based on smart contracts, and its EVM platform is situated in the mainstream. The DxChain team has expanded ethereum’s original EVM and added a storage contract function while still being compatible with the original virtual machine commands. Therefore, developers can use both EVM and storage contract functions. The original Ethereum DAPP developers can directly compile the source code of their APP into Godx with almost no modification, which greatly reduces the development cost for the majority of developers.
Zero-second file storage verification algorithm Through the specially designed Merkle Tree algorithm, the DxChain team implemented a zero-second network-wide method based on file storage verification. Compared to other algorithms, this algorithm saves necessary network interaction time, so that the acceptance speed of large files can be kept within milliseconds. Through this verification algorithm, all file storage will be efficiently verified by the entire network, in order to eradicate hackers.
The DxChain project is unique because of the achievements and improvements made by our team of talented engineers. In the future, we aim to release a series of analytical articles to provide an in-depth explanation of DxChain’s open-source code. Please stay tuned!
Conclusion Finally, the DxChain team would like to thank all of the supporters who accompanied us. Godx Open Source showcased the transformation of DxChain from being a team leading project to one that is driven by the community.
Everyone is welcome to provide us with valuable comments or suggestions by reporting an issue on GitHub. Every bug report and algorithm proposal will help DxChain’s development. We look forward to developing with DxChain's global community in the future, building a win-win, healthy developer ecosystem with continuous technological innovation, and leaving a permanent mark on the blockchain world.
Please share your views and suggestions Here is the website link: https://www.dxchain.com/
submitted by TechnicalChaudhary to cloudstorage [link] [comments]

Unitimes AMA | Danger in Blockchain, Data Protection is Necessary

Unitimes AMA | Danger in Blockchain, Data Protection is Necessary
https://preview.redd.it/22zrdwgeg3m31.jpg?width=1280&format=pjpg&auto=webp&s=1370c511afa85ec06cda6843c36aa9289456806d
At 10:30 on September 12, Unitimes held the 40th online AMA about blockchain technologies and applications. We were glad to have Joanes Espanol , CEO and CTO of Amberdata, to share with us on ‘’Danger in Blockchain, Data Protection is Necessary‘’ . The AMA is composed of two parts : Fixed Q&A and Free Q&A. Check out the details below!

Fixed Q&A

  1. Please introduce yourself and Amberdata
Hi everybody, my name is Joanes Espanol and I am co-founder and CTO of Amberdata. Prior to founding Amberdata, I have worked on several large scale ingestion pipelines, distributed systems and analytics platforms, with a focus on infrastructure automation and highly available systems. I am passionate about information retrieval and extracting meaning from data.
Amberdata is a blockchain and digital asset company which combines validated blockchain and market data from the top crypto exchanges into a unified platform and API, enabling customers to operate with confidence and build real-time data-powered applications.
  1. What type of data does the API provide?
The advantage and uniqueness of Amberdata’s API is the combination of blockchain and pricing data together in one API call.
We provide a standardized way to access blockchain data (blocks, transactions, account information, etc) across different blockchain models like UTXO (Bitcoin, Litecoin, Dash, Zcash...) and Account Based (Ethereum...), with contextualized pricing data from the top crypto exchanges in one API call. If you want to build applications on top of different blockchains, you would have to learn the intricacies of each distributed ledgers, run multiple nodes, aggregate the data, etc - instead of spending all that time and money, you can start immediately by using the APIs that we provide.
What can you get access to? Accounts, account-balances, blocks, contracts, internal messages, logs and events, pending transactions, security audits, source code, tokens, token balances, token transfers, token supplies (circulating & total supplies), transactions as well as prices, order books, trades, tickers and best bid and offers for about 2,000 different assets.
One important thing to note is that most of the APIs return validated data that anybody can verify by themselves. Blockchain is all about trust - operating in a hostile and trustless environment, maintaining consensus while continuously under attack, etc - and we want to make sure that we maintain that level of trust, so the API returns all the information that you would need to recalculate Merkle proofs yourself, hence guaranteeing the data was not tampered with and is authentique.
  1. Why is it important to combine blockchain and market data?
Cryptoeconomics plays a key role in the blockchain world. One simple way to explain this is to look at why peer-to-peer file sharing systems like BitTorrent failed. These file sharing protocols were an early form of decentralization, with each node contributing to and participating in this “global sharing computer”. The issue with these protocols is that they relied on the good will of each participant to (re-)share their files - but without economic incentive, or punishment for not following the rules, it opened the door to bad behavior which ultimately led to its demise.
The genius of Satoshi Nakamoto was to combine and improve upon existing decentralized protocols with game theory, to arrive at a consensus protocol able to circumvent the Byzatine’s General Problem. Now participants have incentives to follow the rules (they get financially rewarded for doing so by mining for example, and penalized for misbehaving), which in turn results in a stable system. This was the first time that crypto-economics were used in a working product and this became the base and norm for a lot of the new systems today.
Pricing data is needed as context to blockchain data: there are a lot of (ERC-20) tokens created on Ethereum - it is very easy to clone an existing contract, and configure it with a certain amount of initial tokens (most commonly in the millions and billions in volume). Each token has an intrinsic value, as determined by the law of supply and demand, and as traded on the exchanges. Price fluctuations have an impact on the adoption and usage, meaning on the overall transaction volume (and to a certain extent transaction throughput) on the blockchain.
Blockchain data is needed as context to market data: activity on blockchain can have an impact on market data. For example, one can look at the incoming token transfers in the Ethereum transaction pool and see if there are any impending big transfers for a specific token, which could result in a significant price move on the other end. Being able to detect that kind of movement and act upon it is the kind of signals that traders are looking for. Another example can be found with token supplies: exchanges want to be notified as soon as possible when a token circulating supply changes, as it affects their trading ability, and in the worst case scenario, they would need to halt trading if a token contract gets compromised.
In conclusion, events on the blockchain can influence price, and market events also have an impact on blockchain data: the two are intimately intertwined, and putting them both in context leads to better insights and better decision making.
  1. All the data you provide is publicly available, what gives?
Very true, all this data is publicly available, that is one of the premises and fundamentals of blockchain models, where all the data is public and transparent across all the nodes of the network. The problem is that, even though it is publicly available, it is not quick, not easy and not cheap to access.
Not quick: blockchain data structures were designed and optimized for achieving consensus in a hostile and trustless environment and for internal state management, not for random access and overall search. Imagine you want to list all the transactions that your wallet address has participated in? The only way to do that would be to replay all the transactions from the beginning of time (starting at the genesis block), looking at the to and from addresses and retain only the ones matching your wallet: at over 500 million of transactions as of today, it will take some unacceptable amount of time to retrieve that list for a customer facing application.
Not easy: Some very basic things that one would expect when dealing with financial assets and instruments are actually very difficult to get at, especially when related to tokens. For example, the current Ether balance of a wallet is easy to retrieve in one call to a Geth or Parity client - however, looking at time series of these balances starts to be a little hairy, as not all historical state is kept by these clients, unless you are running a full archive node. Looking at token holdings and balances gets even more complicated, as most of the token transfers are part of the transient state and not kept on chain. Moreover, token transfers and balance changes over time are triggered by different mechanisms (especially when dealing with contract to contract function calls), and detecting these changes accurately is prone to errors.
Not cheap: As mentioned above, most of the historical data and time series metrics are only available via a full archive node, which at the time of writing requires about 3TB of disk space, just to hold all the blockchain state - and remember, this state is in a compressed and not easily accessible format. To convert it to a more searchable format requires much more space. Also, running your own full archive node requires constant care, maintenance and monitoring, which has become very expensive and prohibitive to run.
  1. Who uses your API today and what do they do with it?
A wide variety of applications and projects are using our API, across different industries ranging from wallets and trust funds (DappRadar), to accounting and arbitrage firms (Moremath), including analytics (Stratcoins) and compliance & security companies (Blue Swan). Amberdata’s API is attractive to many different people because it is very complete and fast, and it provides additional data enrichment not available in other APIs, and because of these, it appeals to and fits nicely with our customers use cases:
· It can be used in the traditional REST way to augment your own processes or enrich your own data with hard to get pieces of information. For example, lots of our users retrieve historical information (blocks and transactions) and relay it in their applications to their own customers, while others are more interested in financial data (account & token balances) and time series for portfolio management.
https://medium.com/amberdata/keep-it-dry-use-amberdatas-api-9cdb222a41ba
· Other projects are more in need of real-time up-to-date data, for which we recommend using our websockets, so you can filter out data in real-time and match your exact needs, rather than getting the firehose of information and having to filter out and discard 99% of it.
· We have a few research projects tapping into our API as well. For example, some of our customers want access to historical market data to backtest their trading strategies and fine-tune their own algorithms.
· Our API is also fully Json RPC compliant, meaning some people use it as a drop-in replacement for their own node, or as an alternative to Infura for example. We have some customers using both Amberdata and Infura as their web3 providers, with the benefits of getting additional enriched data when connecting to our API.
· And finally, we have also built an SDK on top of the API itself, so it is easier to integrate into your own application (https://www.npmjs.com/package/web3data-js).
We also have several subscriptions to match your needs. The developer tier is free and gets you access to 90% of all the data. If you are not sure about your usage patterns yet, we recommend the on-demand plan to get started, while for heavy users the professional and enterprise plans would be more adequate - see https://amberdata.io/pricing for more information.
All and all, we try really hard to make it as easy as possible to use for you. We do the heavy lifting, so you don’t have to worry about all the minutia and you can focus on bringing value to your customers. We work very closely with our customers and continuously improve upon and add new features to our API. If something is not supported or you want something that is not in the API, chances are we already have the data, do not hesitate to ask us ;)
  1. Amberdata recently made some headlines for discovering a vulnerability on Parity client. Can you tell us a bit more about it?
This is an interesting one. One of our internal processes flagged a contract, and more specifically the balanceOf(...) call: it was/is taking more than 5 seconds to execute (while typically this call takes only a few milliseconds). While investigating further, we started looking at the debug traces for that contract call and were pretty surprised when a combination of trace_call+vmTrace crashed our Parity node - and not just randomly, the same call would exhibit the exact same behavior each time, and on different Parity nodes. It turns out that this contract is very poorly written, and the implementation of balanceOf(...) keeps on looping over all the holders of the token, which eventually runs out of memory.
Even though this is a pretty severe bug (any/all Parity node(s) can be remotely shutdown with just one small call to its API), in practice the number of nodes at risk is probably small because only operators who have enabled public facing RPC calls (and possibly the ones who have enabled tracing as well) are affected - which are both disabled by default. Kudos to the Parity team for fixing and releasing a patch in less than 24 hours after the bug was reported!
  1. How do you access the data? How do I get started?
We sometimes get the question, “I do not know how to code, can I still use your data?”, and it is possible! We have built a few dashboards on our platform, and you can visualize and monitor different metrics, and get alerts: https://amberdata.io/dashboards/infrastructure.
A good starting point is to use our Postman collection, which is pretty complete and can give you a very good overview of all the capabilities: https://amberdata.io/docs/libraries and https://www.getpostman.com/collections/79afa5bafe91f0e676d6.
For more advanced users, the REST API is where you should start, but as I mentioned earlier, how to access the data depends on your use case: REST, websockets, Json RPC and SDK are the most commonly ways of getting to it. We have a lot of tutorials and code examples available here: https://amberdata.io/docs.
For developers interested in getting access to Amberdata’s blockchain and market data from within their own contract, they can use the Chainlink Oracle contract, which integrates directly with the API:
https://medium.com/amberdata/smart-contract-oracles-with-amberdata-io-358c2c422d8a
  1. Amberdata just recently celebrated 2 years birthday. What is your proudest accomplishment? Any mistake/lesson you would like to share with us?
The blockchain and crypto market is one of the fastest evolving and innovating markets ever, and a very fast paced environment. Having been heads down for two years now, it is sometimes easy to lose sight of the big picture. The journey has been long, but I am happy and proud to see it all come together: we started with blockchain data and monitoring/alerting, added search, validation and derived data (tokens, supplies, etc) along the way, and finally market data to close the loop on all the cryptoeconomics. Seeing the overall engagement from the community around our data is very gratifying: API usage climbing up, more and more pertinent and relevant questions/suggestions on our support channels, other projects like Kadena sending us their own blockchain data so it can be included in Amberdata’s offering… all of these makes me want to do more :)

Free Q&A

---Who are your competitors? What makes you better?
There are a few data providers out there offering similar information as Amberdata. For example, Etherscan has very complete blockchain data for Ethereum, and CoinmarketCap has assets rankings by market cap and some pricing information. We actually did a pretty thorough analysis on the different data providers and they pros and cons:
https://medium.com/amberdata/which-blockchain-data-api-is-right-for-you-3f3758efceb1
What makes Amberdata unique is three folds:
· Combination of blockchain and market data: typically other providers offer one or the other, but not both, and not integrated with each other - with Amberdata, in one API call I can get blockchain and historically accurate pricing data at the same time. We have also standardized access across multiple blockchains, so you get one interface for all and do not have to worry about understanding each and every one of them.
· Validated & verifiable data: we work hard to preserve transparency and trust and are very open about how our metrics are calculated. For example, blockchain data comes with all the pieces needed to recompute the Mekle proofs so the integrity of the data can be verified at any moment. Also, additional metrics like circulating supply are based on tangible and very concrete definitions so anybody can follow and recalculate them by themselves if needed.
· Enriched data: we have spent a lot of time enriching our APIs with (historical) off chain data like token names and symbols, mappings for token addresses and tradable market pairs, etc. At the same time, our APIs are very granular and provide a level of detail that only a few other providers offer, especially with market data (Level 2 with order books across multiple exchanges, Best Bid Offers, etc).
That's all for the 40th AMA. We should like to thank all the community members for their participation and cooperation! Thanks, Joanes!
submitted by Unitimes_ to u/Unitimes_ [link] [comments]

Bitcoin JSON-RPC Tutorial 5 - Your First Calls Bitcoin JSON-RPC Tutorial 6 - JSON Parameters and Errors Bitcoin JSON-RPC Tutorial 2 - VPS Setup Bitcoin JSON-RPC Tutorial 1 Bitcoin JSON-RPC Tutorial 1

Running Bitcoin with the -server argument (or running bitcoind) tells it to function as a HTTP JSON-RPC server, but Basic access authentication must be used when communicating with it, and, for security, by default, the server only accepts connections from other processes on the same machine. If your HTTP or JSON library requires you to specify Introduction. In this tutorial, we will be taking a closer look at bitcoin's ZeroMQ messaging interface. This interface is useful for developing applications which might require data related to block and transaction events from a Bitcoin core node. Some applications which include block explorers, wallets and reporting dash boards to name just a few. JSON-RPC" + transaction.amount() + "; account:for a gateway Wallet options:bitcoin rpc client cad conversion work from home bitcoin-cli list json rpc call failed bitcoin is downloading blocks addresses bitcoin address balance api bitcoin address lookup bitcoin address I didnt read the whole thread and so i started my bitcoin core with .Hacker Noon As far as I understood, the Bitcoin JSON-RPC is one of the ways (if not the only way) in which applications can be built that can access the bitcoin wallet. So, the RPC server here gives that acces... Bitcoin Core 0.15.0 contains the following changes to the RPC interface and bitcoin-cli for multi-wallet: When running Bitcoin Core with a single wallet, there are no changes to the RPC interface or bitcoin-cli. All RPC calls and bitcoin-cli commands continue to work as before.

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Bitcoin JSON-RPC Tutorial 5 - Your First Calls

An introduction to the Bitcoin JSON-RPC tutorial series. BTC: 1NPrfWgJfkANmd1jt88A141PjhiarT8d9U. Visual Basic .Net : Search in Access Database - DataGridView BindingSource Filter Part 1/2 - Duration: 24:59. ... Bitcoin JSON-RPC Tutorial 5 - Your First Calls - Duration: 10:06. Bitcoin JSON-RPC tutorial. How to set up bitcoind on a VPS. BTC: 1NPrfWgJfkANmd1jt88A141PjhiarT8d9U. Visual Basic .Net : Search in Access Database - DataGridView BindingSource Filter Part 1/2 - Duration: ... Bitcoin JSON-RPC Tutorial 2 - VPS Setup - Duration: 6:28. m1xolyd1an 15,489 views. Bitcoin JSON-RPC tutorial. Getting started with the bitcoin command line interface. My Book: https://www.amazon.com/Building-Bitco... BTC ...

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