Solved
Bitcoin puzzle #125
Bitcoin puzzle #125 has been solved. Its private key is 1c533b6bb7f0804e09960225e44877ac. The address originally held 12.50 BTC, which was swept by whoever found the key first.
Puzzle #125 at a glance
- Total received
- 12.50004706 BTC
- Balance now
- 0.0 BTC
- Address
- 1PXAyUB8ZoH3WD8n5zoAthYjN15yN5CVq5
- HASH160
- f7079256aa027dc437cbb539f955472416725fc8
- Range start
- 10000000000000000000000000000000
- Range end
- 1fffffffffffffffffffffffffffffff
- Bit length
- 125-bit
- Keys in range
- 2.12 × 1037 (21267647932558653966460912964485513216)
- Transactions
- 8
The solved key
- Private key
- 1c533b6bb7f0804e09960225e44877ac
- Decimal
- 37650549717742544505774009877315221420
- WIF
- KwDiBf89QgGbjEhKnhXJuH7Nbdz1FhKePEPcr4to6PqoSc6KxQy6
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 #125 — common questions
How many private keys does Bitcoin puzzle #125 contain?
Puzzle #125 spans the range 2^124 to 2^125−1, which is exactly 2.12 × 10^37 private keys — twice as many as puzzle #124.
How long would it take to solve Bitcoin puzzle #125?
An eight-core machine running this browser solver at four million keys per second would need about 1..6 × 10^21 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 6.73 × 10^17 years.
How much is Bitcoin puzzle #125 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 12.50004706 BTC.
Is Bitcoin puzzle #125 solved?
Yes. Its private key is 1c533b6bb7f0804e09960225e44877ac in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7Nbdz1FhKePEPcr4to6PqoSc6KxQy6 in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #125?
From 10000000000000000000000000000000 to 1fffffffffffffffffffffffffffffff in hexadecimal. The address is 1PXAyUB8ZoH3WD8n5zoAthYjN15yN5CVq5 and its HASH160 is f7079256aa027dc437cbb539f955472416725fc8.