zachalam / BitFact

Prove data with this complete toolkit.
BitFact fingerprints information and then etches it on the Ethereum Blockchain.

Install

Available in 🗄️ npm and 🧶 yarn flavours.

npm install -g bitfact

yarn global add bitfact

Features

• 🖐️ Fingerprint data with one easy command. What's a fingerprint?
• ♾️ Permanent hash etched on the Ethereum blockchain.
• ⛽ Tiny gas fees (~21,000) - the same as sending ether.
• 😎 Use with: mainnet (live), ropsten (testnet), & beaconchain (eth2).

Quickstart

🚗 The only thing you need to drive is an Ethereum provider and privateKey.

$ bitfact setup

Stamp

🪧 After setup, use bitfact stamp with -f to stamp a file or -t to stamp text.

$ bitfact stamp -f hello_world.txt

⠓ Confirming..
🛡️ Success! Stamped on Blockchain:
Txid: 0xbae00000000000000005

Verify

$ bitfact verify -f hello_world.txt -tx 0xbae00000000000000005

⠓ Confirming..
🛡️ Response received from Blockchain.
Stamped: YES

Documentation

The code is well tested and fully documented. Pull requests to docs are welcome.

• 📗 Documentation Site: https://docs.bitfact.io/
• Project Repo: The documentation can also be viewed in the docs/guides folder on the repository.

Use Programatically

📜 You can also import bitfact as a module in your own project.

const BitFact = require("bitfact"); // load from npm or yarn
const bitfact = new BitFact({ 
  provider: "https://mainnet.infura.io/v3/37a0db22401bbe211112",
  privateKey: "321d3fa232e55dedee2bd914273f78897f69053b61437c5",
  options: {chain: 'mainnet'}
});

const receipt = await bitfact.stampText("Hello World!", "this is my memo");
console.log(receipt);

BitFact | Crafted in Las Vegas (don't gamble with your data) 🎰