Solved
Bitcoin puzzle #105
Bitcoin puzzle #105 has been solved. Its private key is 16f14fc2054cd87ee6396b33df3. The address originally held 1.05 BTC, which was swept by whoever found the key first.
Puzzle #105 at a glance
- Total received
- 1.05001 BTC
- Balance now
- 0.0 BTC
- Address
- 1CMjscKB3QW7SDyQ4c3C3DEUHiHRhiZVib
- HASH160
- 7c957db6fdd0733bb83bc6d6d747711263ba50b0
- Range start
- 100000000000000000000000000
- Range end
- 1ffffffffffffffffffffffffff
- Bit length
- 105-bit
- Keys in range
- 2.02 × 1031 (20282409603651670423947251286016)
- Transactions
- 5
The solved key
- Private key
- 16f14fc2054cd87ee6396b33df3
- Decimal
- 29083230144918045706788529192435
- WIF
- KwDiBf89QgGbjEhKnhXJuH7Lrcim5eBMkFQwQtRbW6wxT1ajoNqE
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 #105 — common questions
How many private keys does Bitcoin puzzle #105 contain?
Puzzle #105 spans the range 2^104 to 2^105−1, which is exactly 2.02 × 10^31 private keys — twice as many as puzzle #104.
How long would it take to solve Bitcoin puzzle #105?
An eight-core machine running this browser solver at four million keys per second would need about 1.60 × 10^17 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 643 billion years.
How much is Bitcoin puzzle #105 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 1.05001 BTC.
Is Bitcoin puzzle #105 solved?
Yes. Its private key is 16f14fc2054cd87ee6396b33df3 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7Lrcim5eBMkFQwQtRbW6wxT1ajoNqE in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #105?
From 100000000000000000000000000 to 1ffffffffffffffffffffffffff in hexadecimal. The address is 1CMjscKB3QW7SDyQ4c3C3DEUHiHRhiZVib and its HASH160 is 7c957db6fdd0733bb83bc6d6d747711263ba50b0.