Most sites still ask for an email and a password.
That’s a database of secrets you have to store, hash, reset, and eventually leak.
We built Key-Rex so a site can authenticate with a Lightning pubkey instead.
❌No email.
❌No password.
❌No account database.
✅Two lines of code.
The user proves they control a Lightning node. That’s the login.
Built for Bitcoin companies and anyone who doesn’t want to become a custodian of credentials.
If you ship web apps and you’re tired of auth being the weakest part of the stack:
keyrex.co
keyrexofficial / Key-Rex
npub15u…4eqsv
2026-09-24 13:59:24 UTC
Author Public Key
npub15u0avjgalkvtm7w5luq6swfyx6h033z7yt4se89vfuh464n3r4jsz4eqsvSeen on
wss://relay.damus.ioPublished at
2026-09-24 13:59:24 UTCEvent JSON
{
"id": "7351f673ce0ce0050d7e9de057f029b4daee740254c363e9532ea82ee45bc681",
"pubkey": "a71fd6491dfd98bdf9d4ff01a8392436aef8c45e22eb0c9cac4f2f5d56711d65",
"created_at": 1790258364,
"kind": 1,
"tags": [
[
"client",
"Primal iOS"
]
],
"content": "Most sites still ask for an email and a password.\n\nThat’s a database of secrets you have to store, hash, reset, and eventually leak.\n\nWe built Key-Rex so a site can authenticate with a Lightning pubkey instead.\n\n❌No email.\n❌No password.\u2028❌No account database.\n✅Two lines of code.\n\nThe user proves they control a Lightning node. That’s the login.\n\nBuilt for Bitcoin companies and anyone who doesn’t want to become a custodian of credentials.\n\nIf you ship web apps and you’re tired of auth being the weakest part of the stack:\n\nkeyrex.co",
"sig": "e0e28eb8d5364d8ad9e10797eaf4fdb73a41351787abec2840a2484490223d2f6b45e095ff78c368caa7dddca04770fb81023e867fd027af7eac94ff23bfbde2"
}