IDcollectionsBitcoin puzzle transaction

bits/73

Open since 2015-01-15, the key somewhere in 73 bits. 7.30013849 BTC on Bitcoin.

IDbits/7373 / 2562015-01-15
Puzzle / bits

73

bitcoinp2pkh unsolved

Record

puzzle({
  chain: "bitcoin",
  address: "12VVRNPi4SJq…osDtysn4",
  key: bits(73),
})
Prize
7.30013849 BTC
Key material
73-bit search width
Verification
unverifiable
Solved
not yet
tx 6
Trail
Explorerblockstream.info
Sourcebitcointalk.org/index.php?topic=5218972
Trybits/73 in the playground
Address
12VVRNPi4SJqUTsp6FmqDqY5sGosDtysn4

hash160 105b7f253f0ebd7843adaebbd805c944bfb863e4

Balance
asking the explorer

Key

range · 73 bits
0x1000000000000000000 to 0x1ffffffffffffffffff

Transactions

  1. funding2015-01-150.073 BTC08389f34c9…a6cd15
  2. increase2017-07-110.657 BTC5d45587cfd…384164
  3. increase2023-04-166.57 BTC12f34b58b0…8d13b3
  4. increase2023-09-250.00003777 BTCcd85afbaa9…7f508b
  5. increase2025-01-270.000006 BTCd1824b7803…bdfc54
  6. increase2025-11-240.00009472 BTCd39bfb73aa…e85e91

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).