Solved
Bitcoin puzzle #57
Bitcoin puzzle #57 has been solved. Its private key is 1eb25c90795d61c. The address originally held 0.57 BTC, which was swept by whoever found the key first.
Puzzle #57 at a glance
- Total received
- 0.57038752 BTC
- Balance now
- 0.0 BTC
- Address
- 15c9mPGLku1HuW9LRtBf4jcHVpBUt8txKz
- HASH160
- 328660ef43f66abe2653fa178452a5dfc594c2a1
- Range start
- 100000000000000
- Range end
- 1ffffffffffffff
- Bit length
- 57-bit
- Keys in range
- 7.20 × 1016 (72057594037927936)
- Transactions
- 10
The solved key
- Private key
- 1eb25c90795d61c
- Decimal
- 138245758910846492
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjqtiAvYTJzYEmqup7b
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 #57 — common questions
How many private keys does Bitcoin puzzle #57 contain?
Puzzle #57 spans the range 2^56 to 2^57−1, which is exactly 7.20 × 10^16 private keys — twice as many as puzzle #56.
How long would it take to solve Bitcoin puzzle #57?
An eight-core machine running this browser solver at four million keys per second would need about 571 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 20 hours.
How much is Bitcoin puzzle #57 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.57038752 BTC.
Is Bitcoin puzzle #57 solved?
Yes. Its private key is 1eb25c90795d61c in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjqtiAvYTJzYEmqup7b in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #57?
From 100000000000000 to 1ffffffffffffff in hexadecimal. The address is 15c9mPGLku1HuW9LRtBf4jcHVpBUt8txKz and its HASH160 is 328660ef43f66abe2653fa178452a5dfc594c2a1.