How this works, and what the risks are

Every file here is a genuine Berkeley DB Btree database written by Bitcoin Core — we verify the database magic, the page structure and every record type against Core's own serialization rules. What varies is whether the keys inside were produced by Core or pasted in by someone else. That is exactly what the assessment on each product page measures, and we list the raw evidence rather than asking you to take our word for it.

No. We do not know them and we cannot recover them. If we could, we would have opened the wallets ourselves instead of selling the files for a fraction of their face value. That is the most honest evidence we can offer that we cannot get in.

For encrypted keys, no — and nobody can, offline. What we CAN prove is structural, and we show all of it: whether the funded address is derived from a public key that is stored in the file, whether that public key is a valid point on the secp256k1 curve, whether the encrypted-key records carry Core's 0.21+ integrity checksum, whether the transactions stored in the file re-hash to the exact txids they are filed under, and whether the whole record set is something Core could have written. A funded address with no matching key record in the file can never be spent from that file, no matter what the password is — that is a proof, not a guess, and we flag it prominently.

"Spendable from this file". If that is zero while the balance is large, you are looking at a wallet whose balance cannot be reached from this file at all. The second most important is the SHA-256 hash, because it is what you verify after delivery.

Four of them, and we would rather list them than have you discover them later. (1) The password may be uncrackable — a genuinely random 12-character passphrase is beyond reach. (2) Even a genuine wallet gives you no exclusivity: a wallet.dat is a copy, and whoever else holds one can spend the same coins first. (3) If the coins are unspent and the key is recoverable, you are competing against everyone else who ever had this file. (4) A wallet whose address has never been spent from is exactly what a lost key looks like — there is no way to distinguish "nobody has the key" from "somebody has it and is waiting".

Because the price is the market's estimate of the probability of cracking the password, multiplied by the balance, multiplied by the probability that nobody else gets there first. A file with an unknown passphrase is an option, not an asset, and it is priced like one: face value at 100 USD per BTC, converted to BTC at the live rate. A 10 BTC wallet therefore asks roughly 0.01 BTC at a 100,000 USD market — the same ratio regardless of size.

Delivery is automatic and does not depend on anyone being awake. The moment the payment is seen, the file is e-mailed. If your order expires before the payment is detected, or the mail bounces, write to us with the order number and the transaction id — the order page shows both.

It is used for one thing: sending you the file for this order. There is no mailing list, no account, and no marketing.

We cannot answer that for you. What we sell is a data file containing encrypted key material, and we sell it openly with the full on-chain record published. Whether it is legal, or useful, for you to hold such a file depends on your jurisdiction and your intentions. It is your responsibility to find out before you buy, not after.

No. Once the file is delivered it cannot be un-delivered, and the buyer has it whatever happens next. This is stated before checkout as well, and you have to tick a box confirming you understand it.