Solved
Bitcoin puzzle #22
Bitcoin puzzle #22 has been solved. Its private key is 2de40f. The address originally held 0.02 BTC, which was swept by whoever found the key first.
Puzzle #22 at a glance
- Total received
- 0.022 BTC
- Balance now
- 0.0 BTC
- Address
- 1CfZWK1QTQE3eS9qn61dQjV89KDjZzfNcv
- HASH160
- 7ff45303774ef7a52fffd8011981034b258cb86b
- Range start
- 200000
- Range end
- 3fffff
- Bit length
- 22-bit
- Keys in range
- 2,097,152 (2097152)
- Transactions
- 2
The solved key
- Private key
- 2de40f
- Decimal
- 3007503
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rP9Ja2dhtxoh
Verify it yourself: multiply this key by the secp256k1 generator point, compress the resulting public key, and take RIPEMD-160(SHA-256(·)). You get exactly the HASH160 above. This site performs that check on every published key at build time.
Puzzle #22 — common questions
How many private keys does Bitcoin puzzle #22 contain?
Puzzle #22 spans the range 2^21 to 2^22−1, which is exactly 2,097,152 private keys — twice as many as puzzle #21.
How long would it take to solve Bitcoin puzzle #22?
An eight-core machine running this browser solver at four million keys per second would need about < 1 seconds to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about < 1 seconds.
How much is Bitcoin puzzle #22 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.022 BTC.
Is Bitcoin puzzle #22 solved?
Yes. Its private key is 2de40f in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rP9Ja2dhtxoh in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #22?
From 200000 to 3fffff in hexadecimal. The address is 1CfZWK1QTQE3eS9qn61dQjV89KDjZzfNcv and its HASH160 is 7ff45303774ef7a52fffd8011981034b258cb86b.