Dune Analytics is a powerful tool for blockchain research. Dune gives you all the tools to query, extract, and visualize vast amounts of data from the blockchain. Dune is unlocking the power of public blockchain data by making it accessible to everyone. Dune Analytics Basics While navigating Dune Analytics, it helps to have a good …
A full stack for bitcoin and blockchain-based applications https://bitcore.io/
Bitcore Infrastructure to build Bitcoin and blockchain-based applications for the next generation of financial technology. Getting Started Requirements Trusted P2P Peer MongoDB Server >= v3.4 Checkout the repo git clone git@github.com:bitpay/bitcore.git git checkout master npm install Setup Guide 1. Setup Bitcore config Example bitcore.config.json 2. Setup Bitcoin Node Example Bitcoin Mainnet Config 3. Run Bitcoin …
The World Exchange
Trade, Issue, and Send Directly on the Ripple Network What is The World Exchange? Imagine being able to send money, credit, assets – any form of ownership or value – to anyone anywhere in the world in mere seconds. Then imagine being able to trade or bid on those same items online with anyone else …
Remix – NPM
https://github.com/ethereum/remix-ide Install npm and node.js (see https://docs.npmjs.com/getting-started/installing-node), then do: Remix-ide has been published as an npm module: npm install remix-ide -g remix-ide
Bignumber issue in web3 invalid number value
Getting invalid number error when calling a method of a contract which take uint256 argument. Example:myContract.methods.transfer(accounts[1], 1e16).send({ from: accounts[0] }) When sending value 1e16 it throw errorweb3 invalid number value (arg=”_value”, coderType=”uint256″, value=10000000000000000) When sending value 10000000000000000 throw same error When sending value 1e16 as hex it work okay. No error. When sending value 1e15 …
Web3.js 1.0 Transaction Receive Issue
After deploying a new contract I never receive a receipt object. Expected behavior Receiving a contract object containing the address of the new contract in .on (‘receipt’, …. Actual behavior Nothing happens (also no error). On my node I can look up the contract address manually.The contract gets created. Versions web3.js: 1.0.0-beta.51 (latest) metamask: 6.3.0 (latest) browser: Chromium ethereum node: instance: Geth/v1.8.23-stable-c9427004/linux-amd64/go1.11. Solution …
ARK Blockchain
ARK provides users, developers, and startups with innovative blockchain technologies. We aim to create an entire ecosystem of linked chains and a virtual spiderweb of endless use-cases that make ARK highly flexible, adaptable, and scalable. ARK is a secure platform designed for mass adoption and will deliver the services that consumers want and developers need. …
TRON Blockchain
TRON is an ambitious project dedicated to the establishment of a truly decentralized Internet and its infrastructure. The current TRON team radiates out from Beijing to Seoul, Tokyo, San Francisco and many other countries and regions, totaling more than 100 members. The technological backbones of TRON are experienced blockchain enthusiasts who were previously employed by …
Difference of External and Public modifier in Solidity
When you write smart contracts in Solidity you will use modifier for each function that indicates accessibility for the functions.
Cryptonote
Cryptonote is a cryptocurrency like Bitcoin, Ethereum, etc. Many coins like Dash, PIVX are forked from Bitcoin but Cryptonote has a completely different codebase like Ethereum. Cryptonote is very convenient to fork; it’s official Readme explains that method in detail. There are several cryptocurrencies which are forked from Cryptonote like Monero, which is 9th ranking …