Solved
Bitcoin puzzle #45
Bitcoin puzzle #45 has been solved. Its private key is 122fca143c05. The address originally held 0.04 BTC, which was swept by whoever found the key first.
Puzzle #45 at a glance
- Total received
- 0.045 BTC
- Balance now
- 0.0 BTC
- Address
- 1NtiLNGegHWE3Mp9g2JPkgx6wUg4TW7bbk
- HASH160
- f0225bfc68a6e17e87cd8b5e60ae3be18f120753
- Range start
- 100000000000
- Range end
- 1fffffffffff
- Bit length
- 45-bit
- Keys in range
- 17,592,186,044,416 (17592186044416)
- Transactions
- 2
The solved key
- Private key
- 122fca143c05
- Decimal
- 19996463086597
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgdDrgx63tbte4scLA
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 #45 — common questions
How many private keys does Bitcoin puzzle #45 contain?
Puzzle #45 spans the range 2^44 to 2^45−1, which is exactly 17,592,186,044,416 private keys — twice as many as puzzle #44.
How long would it take to solve Bitcoin puzzle #45?
An eight-core machine running this browser solver at four million keys per second would need about 51 days to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 17.6 seconds.
How much is Bitcoin puzzle #45 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.045 BTC.
Is Bitcoin puzzle #45 solved?
Yes. Its private key is 122fca143c05 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgdDrgx63tbte4scLA in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #45?
From 100000000000 to 1fffffffffff in hexadecimal. The address is 1NtiLNGegHWE3Mp9g2JPkgx6wUg4TW7bbk and its HASH160 is f0225bfc68a6e17e87cd8b5e60ae3be18f120753.