Solved
Bitcoin puzzle #44
Bitcoin puzzle #44 has been solved. Its private key is e02b35a358f. The address originally held 0.04 BTC, which was swept by whoever found the key first.
Puzzle #44 at a glance
- Total received
- 0.044 BTC
- Balance now
- 0.0 BTC
- Address
- 1CkR2uS7LmFwc3T2jV8C1BhWb5mQaoxedF
- HASH160
- 80df54e1f612f2fc5bdc05c9d21a83aa8d20791e
- Range start
- 80000000000
- Range end
- fffffffffff
- Bit length
- 44-bit
- Keys in range
- 8,796,093,022,208 (8796093022208)
- Transactions
- 2
The solved key
- Private key
- e02b35a358f
- Decimal
- 15404761757071
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgdCpdGyxm7PWoNQdr
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 #44 — common questions
How many private keys does Bitcoin puzzle #44 contain?
Puzzle #44 spans the range 2^43 to 2^44−1, which is exactly 8,796,093,022,208 private keys — twice as many as puzzle #43.
How long would it take to solve Bitcoin puzzle #44?
An eight-core machine running this browser solver at four million keys per second would need about 25 days to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 8.8 seconds.
How much is Bitcoin puzzle #44 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.044 BTC.
Is Bitcoin puzzle #44 solved?
Yes. Its private key is e02b35a358f in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgdCpdGyxm7PWoNQdr in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #44?
From 80000000000 to fffffffffff in hexadecimal. The address is 1CkR2uS7LmFwc3T2jV8C1BhWb5mQaoxedF and its HASH160 is 80df54e1f612f2fc5bdc05c9d21a83aa8d20791e.