Ledger Recovery

offline signing + online submission

Offline Signer

self-contained HTML file. save to airgapped device, open from file://, sign transactions offline. derives Ed25519 keys via SLIP-10 from your Ledger mnemonic.

DOWNLOAD SIGNER

here: build unsigned tx (below), copy JSON payload
airgap: open signer.html offline, paste payload, sign with mnemonic
airgap: scan/copy signed extrinsic hex
here: paste signed hex (below), submit to chain

1. Build Transaction

use papi-console to build unsigned transactions, copy the JSON payload to the offline signer

PAPI Console URL

Payload QR

paste unsigned tx hex or JSON payload, encode as QR for the offline signer to scan

Payload hex (0x...) or JSON

2. Submit Signed Extrinsic

Chain

Signed extrinsic hex (0x...) from offline signer