Solved
Bitcoin puzzle #67
Bitcoin puzzle #67 has been solved. Its private key is 730fc235c1942c1ae. The address originally held 6.70 BTC, which was swept by whoever found the key first.
Puzzle #67 at a glance
- Total received
- 6.70013241 BTC
- Balance now
- 0.0 BTC
- Address
- 1BY8GQbnueYofwSuFAT3USAhGjPrkxDdW9
- HASH160
- 739437bb3dd6d1983e66629c5f08c70e52769371
- Range start
- 40000000000000000
- Range end
- 7ffffffffffffffff
- Bit length
- 67-bit
- Keys in range
- 7.37 × 1019 (73786976294838206464)
- Transactions
- 13
The solved key
- Private key
- 730fc235c1942c1ae
- Decimal
- 132656943602386256302
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qbP2K5cm35XKMND1X1KW
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 #67 — common questions
How many private keys does Bitcoin puzzle #67 contain?
Puzzle #67 spans the range 2^66 to 2^67−1, which is exactly 7.37 × 10^19 private keys — twice as many as puzzle #66.
How long would it take to solve Bitcoin puzzle #67?
An eight-core machine running this browser solver at four million keys per second would need about 584,542 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 2 years.
How much is Bitcoin puzzle #67 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 6.70013241 BTC.
Is Bitcoin puzzle #67 solved?
Yes. Its private key is 730fc235c1942c1ae in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qbP2K5cm35XKMND1X1KW in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #67?
From 40000000000000000 to 7ffffffffffffffff in hexadecimal. The address is 1BY8GQbnueYofwSuFAT3USAhGjPrkxDdW9 and its HASH160 is 739437bb3dd6d1983e66629c5f08c70e52769371.