EtherWorld's weekly: May 06, 2019

(Blockchain Weekly Recap) News World news Facebook Building Cryptocurrency-Based Payments System. Social-media giant is recruiting financial firms, merchants to help launch payments platform. Singapore Students graduating from local schools to receive digital certificates using blockchain technology. BreakerMag is shutting down Tether Lawyer Admits Stablecoin Now 74% Backed by Cash and Equivalents Square’s Bitcoin Revenue Jumped to $65.5 Million in Q1, Its Highest Ever Ethereum news Kavita Gupta step down ConsenSysVC ConsenSys Monthly Report...

EtherWorld's weekly: March 17, 2019

(Blockchain Weekly Recap) News World news DocuSign Can Now Trigger Clause Smart Contracts, Co. Preps For Paid Clients SEC Staff to Hold Fintech Forum to Discuss Distributed Ledger Technology and Digital Assets. Forum To Be Held on May 31 at SEC Headquarters. Canada Proposes Regulatory Framework for Cryptocurrency Exchanges Fundación Castro Limón in Tijuana, Mexico, a Nonprofit Children’s Hospital Now Accepts Crypto Donations Via Giveth and Alibre Tokyo crypto-cops nab their first cryptocurrency hacker:...

Web3 subscription APIs and watching birth of CryptoKitty

Web3 provides some very useful APIs by which you can subscribe to the events on Ethereum blockchain. Web3 is a JavaScript library which interact with Ethereum node over RPC. Let's walk through a couple of subscription APIs. Watching Events Web3 can be used on browser as well as server side. This example is going to use Nodejs on server side. Also, I've used Ubuntu to do this example but it should be valid for Windows...

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