IDcollectionsBitcoin puzzle transaction

bits/123

Open since 2015-01-15, the key somewhere in 123 bits. 12.3 BTC on Bitcoin.

IDbits/123123 / 2562015-01-15
Puzzle / bits

123

bitcoinp2pkh unsolved

Record

puzzle({
  chain: "bitcoin",
  address: "1CdufMQL892A…wWqYpKut",
  key: bits(123),
})
Prize
12.3 BTC
Key material
123-bit search width
Verification
unverifiable
Solved
not yet
tx 3
Trail
Explorerblockstream.info
Sourcebitcointalk.org/index.php?topic=5218972
Trybits/123 in the playground
Address
1CdufMQL892A69KXgv6UNBD17ywWqYpKut

hash160 7fa4515066ba6905f894b2078f9af7b1379169cf

Balance
asking the explorer

Key

range · 123 bits
0x4000000000000000000000000000000 to 0x7ffffffffffffffffffffffffffffff

Transactions

  1. funding2015-01-150.123 BTC08389f34c9…a6cd15
  2. increase2017-07-111.107 BTC5d45587cfd…384164
  3. increase2023-04-1611.07 BTC12f34b58b0…8d13b3

Techniques

  1. masked-key-rangecollectionbitcointalk.org/index.php?topic=1306983.msg18765941

Hints

  1. 2017-04-2706:41:08

    officialcollectionThere is no pattern. It is just consecutive keys from a deterministic wallet (masked with leading 000...0001 to set difficulty).