Solved
Bitcoin puzzle #53
Bitcoin puzzle #53 has been solved. Its private key is 180788e47e326c. The address originally held 0.53 BTC, which was swept by whoever found the key first.
Puzzle #53 at a glance
- Total received
- 0.53 BTC
- Balance now
- 0.0 BTC
- Address
- 15K1YKJMiJ4fpesTVUcByoz334rHmknxmT
- HASH160
- 2f4870ef54fa4b048c1365d42594cc7d3d269551
- Range start
- 10000000000000
- Range end
- 1fffffffffffff
- Bit length
- 53-bit
- Keys in range
- 4.50 × 1015 (4503599627370496)
- Transactions
- 3
The solved key
- Private key
- 180788e47e326c
- Decimal
- 6763683971478124
- WIF
- KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjh5SmqrUoK2mhwSYFV
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 #53 — common questions
How many private keys does Bitcoin puzzle #53 contain?
Puzzle #53 spans the range 2^52 to 2^53−1, which is exactly 4.50 × 10^15 private keys — twice as many as puzzle #52.
How long would it take to solve Bitcoin puzzle #53?
An eight-core machine running this browser solver at four million keys per second would need about 36 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 1 hours.
How much is Bitcoin puzzle #53 worth?
The address was swept when it was solved, so there is no claimable reward now. It originally received 0.53 BTC.
Is Bitcoin puzzle #53 solved?
Yes. Its private key is 180788e47e326c in hexadecimal, or KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjh5SmqrUoK2mhwSYFV in WIF format. The balance was spent once the key became known.
What is the key range for puzzle #53?
From 10000000000000 to 1fffffffffffff in hexadecimal. The address is 15K1YKJMiJ4fpesTVUcByoz334rHmknxmT and its HASH160 is 2f4870ef54fa4b048c1365d42594cc7d3d269551.