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...

Reading Ethereum Geth database (LEVELDB)

Geth stores all blockchain data in LevelDB database that stores value in key-value pair. We normally do not need to access these data files because geth provides many utilities to interact with underlying data structure. But, just to understand how geth stores data, let's hack a little bit....

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:...

ÐΞVp2p Wire Protocol (Kademlia Distributed Hash Table)

This article is an attempt to look into Ethereum ÐΞVp2p protocol. I will break this into multiple parts. In this article I am going to cover Kademlia Distributed Hash Table. Kademlia distributed hash table was designed by Petar Maymounkov and David Mazières in 2002 for decentralized peer-to-peer computer networks. Ethereum ÐΞVp2p uses Kadmelia distributed hash table to maintain a list of peers. Following are some details of Kadmealia DHT which will help you understand the...

HOW BLOCKCHAIN COULD BREAK BIG TECH’S HOLD ON AI

Blockchain and AI, two of the most common buzzwords that abound today in the industry, have their own scientific potentials that can be explored. Though few people understand the gravity of these concepts, it is sure to generate interest among the entrepreneurial masses. AI or Artificial Intelligence has been around for quite some time. It is basically an intelligent machine that feeds on the troves of data stored online. AI has helped revolutionized several sectors...

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