Recover a Electrum 1.x wallet.
Electrum 1.x is the original version of the popular lightweight Bitcoin wallet, with a password-encrypted seed.
For a forgotten Electrum password when you still have the wallet file.
Yes. Electrum 1.x is one of the formats that reduces to a check-only extract, so the fleet can test passwords against it safely — finding the password never exposes a key that holds funds. GPU-friendly. You pay 15% only if we recover it, and nothing if we don't.
The Electrum 1.x extract, in detail.
Exactly what the fleet receives for this format — and why finding the password still can't move the funds.
What leaves your machine — and what never does
For a Electrum 1.x wallet, this is the entire check-only extract the fleet receives. It can test a password, but it can never be turned back into a key that spends.
electrum1: - half of the encrypted seed
- the initialization vector (IV)
- the other half of the encrypted seed — never sent
- your addresses and balances
A correct password decrypts the half-seed to valid, expected structure. Half a seed cannot be reassembled into a working wallet.
electrum1:<iv-hex>:<half-seed-hex> Illustrative and synthetic — placeholder bytes. Only half the encrypted seed is ever present.
Half the encrypted seed plus the IV — deliberately incomplete, so it can never reconstruct the full seed.
The key is derived by hashing the password with SHA-256 twice; the seed is then encrypted with AES-256-CBC.
A correct password decrypts the half-seed to valid, expected structure. Half a seed cannot be reassembled into a working wallet.
electrum1: An open, published format. The agent checks every job matches it before running — so a real wallet can't be disguised as an extract.
See the full security model, or how a recovery works end to end.