Solved
Bitcoin puzzle #3
Bitcoin puzzle #3 has been solved. Its private key is 7. The address originally held 0.00 BTC, which was swept by whoever found the key first.
Puzzle #3 at a glance
- Total received
- 0.0031 BTC
- Balance now
- 0.0 BTC
- Address
- 19ZewH8Kk1PDbSNdJ97FP4EiCjTRaZMZQA
- HASH160
- 5dedfbf9ea599dd4e3ca6a80b333c472fd0b3f69
- Range start
- 4
- Range end
- 7
- Bit length
- 3-bit
- Keys in range
- 4 (4)
- Transactions
- 4
The solved key
- Private key
- 7
- Decimal
- 7
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU76rnZwVdz
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 #3 — common questions
How many private keys does Bitcoin puzzle #3 contain?
Puzzle #3 spans the range 2^2 to 2^3−1, which is exactly 4 private keys — twice as many as puzzle #2.
How long would it take to solve Bitcoin puzzle #3?
An eight-core machine running this browser solver at four million keys per second would need about < 1 seconds to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about < 1 seconds.
How much is Bitcoin puzzle #3 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.0031 BTC.
Is Bitcoin puzzle #3 solved?
Yes. Its private key is 7 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU76rnZwVdz in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #3?
From 4 to 7 in hexadecimal. The address is 19ZewH8Kk1PDbSNdJ97FP4EiCjTRaZMZQA and its HASH160 is 5dedfbf9ea599dd4e3ca6a80b333c472fd0b3f69.