Web3.js Documentation and examples

The web3.js library is a collection of modules which contain specific functionality for the ethereum ecosystem. The web3-eth is for the ethereum blockchain and smart contracts The web3-shh is for the whisper protocol to communicate p2p and broadcast The web3-bzz is for the swarm protocol, the decentralized file storage The web3-utils contains useful helper functions for Dapp developers. Here the full documentation. Here…

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Workshop en Barcelona: Cómo invertir con BITCOIN y ETHEREUM

Código curso: 10092 Fabricante: KNOWTECH Especialidad: workshop Nivel: Intermedio Duración: 3 horas Precio: 60 € BLOCKCHAIN , BITCOIN , ETHEREUM , TOKEN , GNOSIS , GOLEMS , RIPPLE , WORKSHOP Descripción BlockChain está aquí y ha venido para quedarse. Que mejor introducción que la siguiente: En 2009, un hombre de Noruega compró 27$ en Bitcoins mientras escribía una tesis sobre encriptación, y luego se olvidó de ellos… 4 años después, después de que Bitcoin subiera…

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MetaMask for Ethereum Classic

MetaMask only supports officially Ethereum and the Ethereum Testnets, but you can use a branch of MetaMask to use it with Ethereum classic. (You can download from here) See here also the code of the new development of ClassicMask. If you don’t know the history between Ethereum and Ethereum Classic, you can read the Dexaran interview here.…

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How to call methods of Ethereum Smart-Contracts from WordPress with MetaMask, Web3 and Javascript (PART II)

This post is the continuation of the previous post: How to call methods of Ethereum Smart-Contracts from WordPress with MetaMask, Web3 and Javascript Now we want to call the method “buy” and send some Ether in the transaction to buy tokens from our Ethereum Smart-contract (for MAAT tokens). Then we must change the javascript code…

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How to call methods of Ethereum Smart-Contracts from WordPress with MetaMask, Web3 and Javascript

First you must create and deploy a SMART-CONTRACT in the Ethereum Test Net, you can follow these instructions: Creating my first Ethereum Smart-Contract in Test net Creating MrAddon token in Ethereum This post is based in the information of the previous post: Javascript development to interact with Ethereum Smart-Contracts To start, we have hosted a…

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Remembering the first version of Bitcoin. Mail of Satoshi Nakamoto: Bitcoin v0.1 released

Bitcoin v0.1 released (source here) Satoshi Nakamoto Fri, 09 Jan 2009 17:05:49 -0800 Announcing the first release of Bitcoin, a new electronic cash system that uses a peer-to-peer network to prevent double-spending. It’s completely decentralized with no server or central authority. See bitcoin.org for screenshots. Download link: http://downloads.sourceforge.net/bitcoin/bitcoin-0.1.0.rar Windows only for now. Open source C++ code…

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