Solved
Bitcoin puzzle #55
Bitcoin puzzle #55 has been solved. Its private key is 6abe1f9b67e114. The address originally held 0.60 BTC, which was swept by whoever found the key first.
Puzzle #55 at a glance
- Total received
- 0.60011515 BTC
- Balance now
- 0.0 BTC
- Address
- 1LzhS3k3e9Ub8i2W1V8xQFdB8n2MYCHPCa
- HASH160
- db53d9bbd1f3a83b094eeca7dd970bd85b492fa2
- Range start
- 40000000000000
- Range end
- 7fffffffffffff
- Bit length
- 55-bit
- Keys in range
- 1.80 × 1016 (18014398509481984)
- Transactions
- 6
The solved key
- Private key
- 6abe1f9b67e114
- Decimal
- 30045390491869460
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjidyYKE5NcJQZYvknA
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 #55 — common questions
How many private keys does Bitcoin puzzle #55 contain?
Puzzle #55 spans the range 2^54 to 2^55−1, which is exactly 1.80 × 10^16 private keys — twice as many as puzzle #54.
How long would it take to solve Bitcoin puzzle #55?
An eight-core machine running this browser solver at four million keys per second would need about 143 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 5 hours.
How much is Bitcoin puzzle #55 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.60011515 BTC.
Is Bitcoin puzzle #55 solved?
Yes. Its private key is 6abe1f9b67e114 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjidyYKE5NcJQZYvknA in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #55?
From 40000000000000 to 7fffffffffffff in hexadecimal. The address is 1LzhS3k3e9Ub8i2W1V8xQFdB8n2MYCHPCa and its HASH160 is db53d9bbd1f3a83b094eeca7dd970bd85b492fa2.