This is an afternoon-project, a blockchain built in node, supporting PoW.

Node itself is a more beautiful, flexible and powerful language for internet project, again, I want to show my love to js.

When it comes to blockchain, most developers only learn how to do Dapp with ethereum, neo, or other existing infrustructure-completed project... I think there is a better way to understand blockchain itself, to build a chain from scratch

• How Block, Blockchain, node, transaction work with each others.
• How to do them in Node
• How to resolve basic conflicts in blockchain
• How to use sha256 to do PoW(Proof of Work)

$ npm clone https://github.com/amazingandyyy/blockchain-in-js.git
$ npm i
$ npm run dev // default on port 3000

<!-- to run more nodes -->
$ npm run nodes // default on port 3000
$ npm run nodes 3000 // listening on port 3000
$ npm run nodes 3001 // listening on port 3001
$ npm run nodes 3002 // listening on port 3002

GET /blockchain
GET /blockchain/mine
POST /blockchain/transactions
GET /blockchain/nodes/resolve
POST /blockchain/nodes/register
GET /blockchain/nodes

Andy Chen(amazingandyyy)

MIT