Solved
Bitcoin puzzle #12
Bitcoin puzzle #12 has been solved. Its private key is a7b. The address originally held 0.01 BTC, which was swept by whoever found the key first.
Puzzle #12 at a glance
- Total received
- 0.01200961 BTC
- Balance now
- 0.0 BTC
- Address
- 1DBaumZxUkM4qMQRt2LVWyFJq5kDtSZQot
- HASH160
- 85a1f9ba4da24c24e582d9b891dacbd1b043f971
- Range start
- 800
- Range end
- fff
- Bit length
- 12-bit
- Keys in range
- 2,048 (2048)
- Transactions
- 4
The solved key
- Private key
- a7b
- Decimal
- 2683
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFUW5RtS2JN1
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 #12 — common questions
How many private keys does Bitcoin puzzle #12 contain?
Puzzle #12 spans the range 2^11 to 2^12−1, which is exactly 2,048 private keys — twice as many as puzzle #11.
How long would it take to solve Bitcoin puzzle #12?
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 #12 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.01200961 BTC.
Is Bitcoin puzzle #12 solved?
Yes. Its private key is a7b in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFUW5RtS2JN1 in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #12?
From 800 to fff in hexadecimal. The address is 1DBaumZxUkM4qMQRt2LVWyFJq5kDtSZQot and its HASH160 is 85a1f9ba4da24c24e582d9b891dacbd1b043f971.