sign-in-with-ethereum

JavaScript

Minimal example of sign in with Ethereum. Compatible with web3 browsers.

Last updated Aug 25, 2025

27

Stars

0

Forks

0

Issues

0

Stars/day

Attention Score

8

View on GitHub ↗ Open in github.dev

Topics

#auth #authentication #eth #ethereum #metamask #oauth #sso #wallet #web3

Language breakdown

JavaScript 74.5%

HTML 25.5%

▸ Files click to expand

README

Sign In With Ethereum

login with web3 wallet

screen

Demo at https://sign-in-with-ethereum.netlify.app/.

TODO

✅ Launch MetaMask extension on button click
✅ Display public Account information
✅ Show warning if web2 browser
✅ Show ens name if any
✅ Verify user by asking them to sign a message with their private key
✅ Set cookie 🍪 so user is signed in on next load
✅ log out
⬜️ Mint eth nft

Running

serve locally python3 -m http.server 8000 --bind 127.0.0.1
open http://localhost:8000

Dependencies

https://docs.ethers.io/v5/

Credits

Inspired by:

https://twitter.com/BrantlyMillegan/status/1402388133086367751
https://twitter.com/gregisenberg/status/1435234043583467526

🔗 More in this category