b1000/72

b1000/72 unsolved bitcoin Bitcoin puzzle transaction

prize: 7.200144 BTC
key material: 72-bit search width
public key: unknown
started: 2015-01-15
solved: not yet
verification: puzzle has no private key

address · p2pkh

1JTK7s9YVYywfm5XUH7RNhHJH1LshCaRFR blockstream.info

hash160 bf7413e8df4e7a34ce9dc13e2f2648783ec54adb

balance

asking the explorer

key range · 72 bits

2^71 to 2^72 - 1

0x800000000000000000 to 0xffffffffffffffffff

transactions · 6

funding2015-01-150.072 BTC08389f34c98c6063…1e5fa6cd15
increase2017-07-110.648 BTC5d45587cfd1d5b0f…4544384164
increase2023-04-166.48 BTC12f34b58b04dfb02…41a78d13b3
increase2023-09-250.00003779 BTC7d7dc5027ad97138…c1e821ae93
increase2025-01-280.000006 BTCcaa959d2e425bd20…33edd08631
increase2025-08-060.0001 BTC4b7c35b7ca546193…3d7a15e030

source

open in the playground

https://bitcointalk.org/index.php?topic=5218972

toolpuzzles_show

what a model reads · MCP · Pi · OMP

b1000/72	unsolved	7.200144 BTC	1JTK7s9YVYywfm5XUH7RNhHJH1LshCaRFR
chain: bitcoin  address kind: p2pkh
hash160: bf7413e8df4e7a34ce9dc13e2f2648783ec54adb
public key: unknown
private key: unknown
started: 2015-01-15 18:07:14
transactions: 6
	funding	2015-01-15 18:07:14	0.072 BTC	08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15
	increase	2017-07-11 05:00:53	0.648 BTC	5d45587cfd1d5b0fb826805541da7d94c61fe432259e68ee26f4a04544384164
	increase	2023-04-16 06:29:48	6.48 BTC	12f34b58b04dfb0233ce889f674781c0e0c7ba95482cca469125af41a78d13b3
	increase	2023-09-25 15:00:17	0.00003779 BTC	7d7dc5027ad971387295921620df609642fb4040a782a6b795be71c1e821ae93
	increase	2025-01-28 07:27:07	0.000006 BTC	caa959d2e425bd209e5ae73348b247716c71e56b8216aeccf7685733edd08631
	increase	2025-08-06 12:50:58	0.0001 BTC	4b7c35b7ca546193090d58aaf4746f2d5c08fa024bab23f13d8aff3d7a15e030
explorer: https://blockstream.info/address/1JTK7s9YVYywfm5XUH7RNhHJH1LshCaRFR
source: https://bitcointalk.org/index.php?topic=5218972
key range: 800000000000000000..ffffffffffffffffff (hex, 72 bits)

puzzle.toJSON() absent fields are absent, never null

{
  "id": "b1000/72",
  "chain": "bitcoin",
  "address": {
    "value": "1JTK7s9YVYywfm5XUH7RNhHJH1LshCaRFR",
    "kind": "p2pkh",
    "hash160": "bf7413e8df4e7a34ce9dc13e2f2648783ec54adb"
  },
  "status": "unsolved",
  "key": {
    "bits": 72
  },
  "prize": 7.200144,
  "start_date": "2015-01-15 18:07:14",
  "source_url": "https://bitcointalk.org/index.php?topic=5218972",
  "transactions": [
    {
      "tx_type": "funding",
      "txid": "08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15",
      "date": "2015-01-15 18:07:14",
      "amount": 0.072
    },
    {
      "tx_type": "increase",
      "txid": "5d45587cfd1d5b0fb826805541da7d94c61fe432259e68ee26f4a04544384164",
      "date": "2017-07-11 05:00:53",
      "amount": 0.648
    },
    {
      "tx_type": "increase",
      "txid": "12f34b58b04dfb0233ce889f674781c0e0c7ba95482cca469125af41a78d13b3",
      "date": "2023-04-16 06:29:48",
      "amount": 6.48
    },
    {
      "tx_type": "increase",
      "txid": "7d7dc5027ad971387295921620df609642fb4040a782a6b795be71c1e821ae93",
      "date": "2023-09-25 15:00:17",
      "amount": 0.00003779
    },
    {
      "tx_type": "increase",
      "txid": "caa959d2e425bd209e5ae73348b247716c71e56b8216aeccf7685733edd08631",
      "date": "2025-01-28 07:27:07",
      "amount": 0.000006
    },
    {
      "tx_type": "increase",
      "txid": "4b7c35b7ca546193090d58aaf4746f2d5c08fa024bab23f13d8aff3d7a15e030",
      "date": "2025-08-06 12:50:58",
      "amount": 0.0001
    }
  ]
}