IDcollectionsBitcoin puzzle transaction

bits/79

Open since 2015-01-15, the key somewhere in 79 bits. 7.9 BTC on Bitcoin.

IDbits/7979 / 2562015-01-15
Puzzle / bits

79

bitcoinp2pkh unsolved

Record

puzzle({
  chain: "bitcoin",
  address: "1ARk8HWJMn8j…7KRkn2t8",
  key: bits(79),
})
Prize
7.9 BTC
Key material
79-bit search width
Verification
unverifiable
Solved
not yet
tx 3
Trail
Explorerblockstream.info
Sourcebitcointalk.org/index.php?topic=5218972
Trybits/79 in the playground
Address
1ARk8HWJMn8js8tQmGUJeQHjSE7KRkn2t8

hash160 67671d5490c272e3ab7ddd34030d587738df33da

Balance
asking the explorer

Key

range · 79 bits
0x40000000000000000000 to 0x7fffffffffffffffffff

Transactions

  1. funding2015-01-150.079 BTC08389f34c9…a6cd15
  2. increase2017-07-110.711 BTC5d45587cfd…384164
  3. increase2023-04-167.11 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).