Sign in your browser. Carry it anywhere.

Your key is made and kept in this page by the browser's own cryptography. Nothing is uploaded: a signed transaction is a small file you hand to any validator, from any machine, even one that has never seen your key. That separation — signing offline, submitting online — is how high-value systems keep keys away from networks.

Your key

Open a key file

No key loaded.

Seal and save it (passphrase, 8 characters or more)

Lose the key file or the passphrase and the account cannot sign again (lost-key recovery through two issuers exists for exactly that).

The payment

Ledger API (optional, fills in the rest) Pay to (a name the API knows, or an address)

Amount Purpose

Ledger name Transaction number

Sign and carry

Signatures made here are byte-for-byte identical to jurisledger's (tested on every commit); sealed key files open on both sides. Research prototype: do not hold anything of value with it.