Solved
Bitcoin puzzle #9
Bitcoin puzzle #9 has been solved. Its private key is 1d3. The address originally held 0.02 BTC, which was swept by whoever found the key first.
Puzzle #9 at a glance
- Total received
- 0.0181 BTC
- Balance now
- 0.0 BTC
- Address
- 1CQFwcjw1dwhtkVWBttNLDtqL7ivBonGPV
- HASH160
- 7d0f6c64afb419bbd7e971e943d7404b0e0daab4
- Range start
- 100
- Range end
- 1ff
- Bit length
- 9-bit
- Keys in range
- 256 (256)
- Transactions
- 6
The solved key
- Private key
- 1d3
- Decimal
- 467
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFUB3vfDKcxZ
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 #9 — common questions
How many private keys does Bitcoin puzzle #9 contain?
Puzzle #9 spans the range 2^8 to 2^9−1, which is exactly 256 private keys — twice as many as puzzle #8.
How long would it take to solve Bitcoin puzzle #9?
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 #9 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.0181 BTC.
Is Bitcoin puzzle #9 solved?
Yes. Its private key is 1d3 in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFUB3vfDKcxZ in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #9?
From 100 to 1ff in hexadecimal. The address is 1CQFwcjw1dwhtkVWBttNLDtqL7ivBonGPV and its HASH160 is 7d0f6c64afb419bbd7e971e943d7404b0e0daab4.