Solved
Bitcoin puzzle #68
Bitcoin puzzle #68 has been solved. Its private key is bebb3940cd0fc1491. The address originally held 6.80 BTC, which was swept by whoever found the key first.
Puzzle #68 at a glance
- Total received
- 6.80033562 BTC
- Balance now
- 0.0 BTC
- Address
- 1MVDYgVaSN6iKKEsbzRUAYFrYJadLYZvvZ
- HASH160
- e0b8a2baee1b77fc703455f39d51477451fc8cfc
- Range start
- 80000000000000000
- Range end
- fffffffffffffffff
- Bit length
- 68-bit
- Keys in range
- 1.47 × 1020 (147573952589676412928)
- Transactions
- 29
The solved key
- Private key
- bebb3940cd0fc1491
- Decimal
- 219898266213316039825
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qd7sDG4F2sdMtzNe8y2U
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 #68 — common questions
How many private keys does Bitcoin puzzle #68 contain?
Puzzle #68 spans the range 2^67 to 2^68−1, which is exactly 1.47 × 10^20 private keys — twice as many as puzzle #67.
How long would it take to solve Bitcoin puzzle #68?
An eight-core machine running this browser solver at four million keys per second would need about 1.17 million years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 5 years.
How much is Bitcoin puzzle #68 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 6.80033562 BTC.
Is Bitcoin puzzle #68 solved?
Yes. Its private key is bebb3940cd0fc1491 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qd7sDG4F2sdMtzNe8y2U in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #68?
From 80000000000000000 to fffffffffffffffff in hexadecimal. The address is 1MVDYgVaSN6iKKEsbzRUAYFrYJadLYZvvZ and its HASH160 is e0b8a2baee1b77fc703455f39d51477451fc8cfc.