IDcollectionsBitcoin puzzle transaction

bits/148

Open since 2015-01-15, the key somewhere in 148 bits. 14.8 BTC on Bitcoin.

IDbits/148148 / 2562015-01-15
Puzzle / bits

148

bitcoinp2pkh unsolved

Record

puzzle({
  chain: "bitcoin",
  address: "1FwZXt6EpRT7…T4trbMrV",
  key: bits(148),
})
Prize
14.8 BTC
Key material
148-bit search width
Verification
unverifiable
Solved
not yet
tx 3
Trail
Explorerblockstream.info
Sourcebitcointalk.org/index.php?topic=5218972
Trybits/148 in the playground
Address
1FwZXt6EpRT7Fkndzv6K4b4DFoT4trbMrV

hash160 a3e3612e586fd206efb8eee6ccd58318e182829a

Balance
asking the explorer

Key

range · 148 bits
0x8000000000000000000000000000000000000 to 0xfffffffffffffffffffffffffffffffffffff

Transactions

  1. funding2015-01-150.148 BTC08389f34c9…a6cd15
  2. increase2017-07-111.332 BTC5d45587cfd…384164
  3. increase2023-04-1613.32 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).