bitcoin-computer
Advanced tools
BitcoinComputer is a Javascript library for running smart contracts on Bitcoin. bitcoincomputer.io
npm init -y && npm i -s bitcoin-computer
Create file index.mjs as shown below. Replace the string "replace this seed" with your own seed phrase (eg from your wallet or from here).
import Computer from 'bitcoin-computer'
// the smart contract
class Counter {
constructor() { this.n = 0 }
inc() { this.n += 1 }
}
// run the smart contract
;(async () => {
const computer = new Computer({
seed: 'replace this seed',
chain: 'BSV', // BSV or BCH
network: 'testnet' // testnet or livenet
})
const counter = await computer.new(Counter, [])
await counter.inc()
console.log(counter)
computer.shutdown()
})()
To run the code you need to fund the Bitcoin wallet inside the computer object. Run the code using node --experimental-modules index.mjs. You will get an error message "Insufficient balance in address <your_address>".
Send free testnet coins from a Bitcoin SV faucet or a Bitcoin Cash Faucet to <your_address>. Run the contract again and you will see:
Counter {
n: 1,
_owners: [ '028b43c3e12159179c...' ],
_amount: 2000
}
Create file .babelrc
{
"presets": [ "@babel/preset-env" ],
"plugins": [ [ "@babel/transform-runtime" ] ]
}
Create file index.html
<html>
<body>
<script src="./index.js"></script>
<div id='el'></div>
</body>
</html>
Create file index.js
import Computer from 'bitcoin-computer';
class Counter {
constructor() { this.n = 0 }
inc() { this.n += 1 }
}
; (async () => {
const computer = new Computer({
seed: 'replace this seed',
chain: 'BCH', // BSV or BCH
network: 'testnet', // testnet or livenet
path: 'm/44'/0'/0'/0' // defaults to "m/44'/0'/0'/0"
})
const counter = await computer.new(Counter, [])
document.getElementById("el").innerHTML = `Counter is ${counter.n}`;
await counter.inc()
document.getElementById("el").innerHTML = `Counter is ${counter.n}`;
computer.shutdown()
})()
Run the following in an empty directory
npm init -y
npm i -s bitcoin-computer
npm i -g parcel-bundler
npm i -s @babel/runtime
npm i -d @babel/plugin-transform-runtime
parcel index.html
Open your browser at http://localhost:1234. See the instructions for how to pick your own seed phrase and how to fund the computer in the section above
You can find more information in the Bitcoin|Computer Docs
Bitcoin|Computer is in alpha stage, so there will be bugs. If you have any issues, please
path option to the empty string when creating a computer object.FAQs
Lightweight Smart Contracts for Bitcoin and Litecoin
The npm package bitcoin-computer receives a total of 1 weekly downloads. As such, bitcoin-computer popularity was classified as not popular.
We found that bitcoin-computer demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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