Solved
Bitcoin puzzle #23
Bitcoin puzzle #23 has been solved. Its private key is 556e52. The address originally held 0.02 BTC, which was swept by whoever found the key first.
Puzzle #23 at a glance
- Total received
- 0.023 BTC
- Balance now
- 0.0 BTC
- Address
- 1L2GM8eE7mJWLdo3HZS6su1832NX2txaac
- HASH160
- d0a79df189fe1ad5c306cc70497b358415da579e
- Range start
- 400000
- Range end
- 7fffff
- Bit length
- 23-bit
- Keys in range
- 4,194,304 (4194304)
- Transactions
- 2
The solved key
- Private key
- 556e52
- Decimal
- 5598802
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rVkthFNsQ6i7
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 #23 — common questions
How many private keys does Bitcoin puzzle #23 contain?
Puzzle #23 spans the range 2^22 to 2^23−1, which is exactly 4,194,304 private keys — twice as many as puzzle #22.
How long would it take to solve Bitcoin puzzle #23?
An eight-core machine running this browser solver at four million keys per second would need about 1.0 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 #23 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.023 BTC.
Is Bitcoin puzzle #23 solved?
Yes. Its private key is 556e52 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rVkthFNsQ6i7 in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #23?
From 400000 to 7fffff in hexadecimal. The address is 1L2GM8eE7mJWLdo3HZS6su1832NX2txaac and its HASH160 is d0a79df189fe1ad5c306cc70497b358415da579e.