b1000/195

b1000/195 swept bitcoin Bitcoin puzzle transaction

prize: 0.195 BTC
key material: 195-bit search width
public key: compressed · 029cfb4b5b…74af192d
started: 2015-01-15
solved: not yet
verification: puzzle has no private key

address · p2pkh

16q15tpaHQFUENUmRPLgiidCMWLcDpVEgs blockstream.info

hash160 3fecaa5f1295e3374ef2b04a365523cfcb56305a

balance

asking the explorer

key range · 195 bits

2^194 to 2^195 - 1

0x4000000000000000000000000000000000000000000000000 to 0x7ffffffffffffffffffffffffffffffffffffffffffffffff

transactions · 2

funding2015-01-150.195 BTC08389f34c98c6063…1e5fa6cd15
sweep2017-07-110.195 BTC5d45587cfd1d5b0f…4544384164

source

open in the playground

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

toolpuzzles_show

what a model reads · MCP · Pi · OMP

b1000/195	swept	0.195 BTC	16q15tpaHQFUENUmRPLgiidCMWLcDpVEgs
chain: bitcoin  address kind: p2pkh
hash160: 3fecaa5f1295e3374ef2b04a365523cfcb56305a
public key: 029cfb4b5b2830188161b359fc1fb7ef3023b3212889ee8565a7989de774af192d (compressed)
private key: unknown
started: 2015-01-15 18:07:14
transactions: 2
	funding	2015-01-15 18:07:14	0.195 BTC	08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15
	sweep	2017-07-11 05:00:53	0.195 BTC	5d45587cfd1d5b0fb826805541da7d94c61fe432259e68ee26f4a04544384164
explorer: https://blockstream.info/address/16q15tpaHQFUENUmRPLgiidCMWLcDpVEgs
source: https://bitcointalk.org/index.php?topic=5218972
key range: 4000000000000000000000000000000000000000000000000..7ffffffffffffffffffffffffffffffffffffffffffffffff (hex, 195 bits)

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

{
  "id": "b1000/195",
  "chain": "bitcoin",
  "address": {
    "value": "16q15tpaHQFUENUmRPLgiidCMWLcDpVEgs",
    "kind": "p2pkh",
    "hash160": "3fecaa5f1295e3374ef2b04a365523cfcb56305a"
  },
  "status": "swept",
  "pubkey": {
    "value": "029cfb4b5b2830188161b359fc1fb7ef3023b3212889ee8565a7989de774af192d",
    "format": "compressed"
  },
  "key": {
    "bits": 195
  },
  "prize": 0.195,
  "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": 0.195
    },
    {
      "tx_type": "sweep",
      "txid": "5d45587cfd1d5b0fb826805541da7d94c61fe432259e68ee26f4a04544384164",
      "date": "2017-07-11 05:00:53",
      "amount": 0.195
    }
  ]
}