Solved
Bitcoin puzzle #66
Bitcoin puzzle #66 has been solved. Its private key is 2832ed74f2b5e35ee. The address originally held 6.60 BTC, which was swept by whoever found the key first.
Puzzle #66 at a glance
- Total received
- 6.60321602 BTC
- Balance now
- 0.0 BTC
- Address
- 13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so
- HASH160
- 20d45a6a762535700ce9e0b216e31994335db8a5
- Range start
- 20000000000000000
- Range end
- 3ffffffffffffffff
- Bit length
- 66-bit
- Keys in range
- 3.68 × 1019 (36893488147419103232)
- Transactions
- 50
The solved key
- Private key
- 2832ed74f2b5e35ee
- Decimal
- 46346217550346335726
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qZfFoWMiwBt943V7CQeX
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 #66 — common questions
How many private keys does Bitcoin puzzle #66 contain?
Puzzle #66 spans the range 2^65 to 2^66−1, which is exactly 3.68 × 10^19 private keys — twice as many as puzzle #65.
How long would it take to solve Bitcoin puzzle #66?
An eight-core machine running this browser solver at four million keys per second would need about 292,271 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 1 years.
How much is Bitcoin puzzle #66 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 6.60321602 BTC.
Is Bitcoin puzzle #66 solved?
Yes. Its private key is 2832ed74f2b5e35ee in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qZfFoWMiwBt943V7CQeX in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #66?
From 20000000000000000 to 3ffffffffffffffff in hexadecimal. The address is 13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so and its HASH160 is 20d45a6a762535700ce9e0b216e31994335db8a5.