collections/Quizchain

quizchain/4

Solved on 2019-04-07 after 1h 29m, key published. 0.007 BTC on a Bitcoin address, 1JUZ8dxsH67yZd9KcuqpsSPA6fENtzM3NU. Part of Quizchain.

quizchain/4 solved bitcoin Quizchain
prize
0.007 BTC
key material
wif
public key
compressed · 034c27064d…96cecdec
started
2019-04-07
solved
2019-04-07 · 1h 29m
verification
key derives the address

address · p2pkh

1JUZ8dxsH67yZd9KcuqpsSPA6fENtzM3NU blockstream.info

hash160 bfb03103ed7259e878deb4a72fc987f42fdce21e

balance

asking the explorer

key material · on the record

WIF
KwZXovJ7Fxu39q7TYmnwrjmBoYCcS86nga8snnsB6RDD5GXd86TX
entropy hash
0574a857c65a79835fa888c5321facc875073f553b94d1985041fd8f995ea4fa
entropy source
SHA-256 of the two words with the last three characters of the block 3 key appended

transactions · 2

  1. funding2019-04-070.007 BTC
  2. claim2019-04-070.00699322 BTC

hints · 3 · who said it, where, and what confirms that

toolpuzzles_show

what a model reads · MCP · Pi · OMP

quizchain/4	solved	0.007 BTC	1JUZ8dxsH67yZd9KcuqpsSPA6fENtzM3NU
chain: bitcoin  address kind: p2pkh
hash160: bfb03103ed7259e878deb4a72fc987f42fdce21e
public key: 034c27064d1789e275d76e898f5d5525bf6a5833ca959e02269db025b196cecdec (compressed)
private key: KwZXovJ7Fxu39q7TYmnwrjmBoYCcS86nga8snnsB6RDD5GXd86TX (wif)
entropy: 0574a857c65a79835fa888c5321facc875073f553b94d1985041fd8f995ea4fa from https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/ (SHA-256 of the two words with the last three characters of the block 3 key appended)
started: 2019-04-07 09:15:55
solved: 2019-04-07 10:45:28 (1h 29m)
transactions: 2
	funding	2019-04-07 09:15:55	0.007 BTC	29eb1d7fdae7d1bc7cea6824ff4d7e2acf3935ce830c434a40dfe13bdd8e01b5
	claim	2019-04-07 10:45:28	0.00699322 BTC	4a571d060233ed298ee8227be1596f89523b556d8af4d9378483f62a4aa95f14
claim: https://blockstream.info/tx/4a571d060233ed298ee8227be1596f89523b556d8af4d9378483f62a4aa95f14
hints: 3
	official	-	Do you know two words? They are in the word "know".	source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/	confirmation: https://web.archive.org/web/20230611095720/https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/ (Wayback capture of the post with the solution edit)	answer: The Chinese symbol (Kanji) for "know" is composed of the two elements "arrow" (to the left) and "mouth" (to the right).	answer source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/
	official	-	As always, take the solution string (no space between the two words), append the last three digits from the private key of the third block, run a SHA 256 hash on that and then use as entropy for brain wallet.	source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/	answer: arrowmouth83S	answer source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/
	official	-	This one is difficult, so here is one extra hint. Look at my handle name.	source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/	answer: The hint about my handlename was to point to the fact that it is a Japanese name.	answer source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/
explorer: https://blockstream.info/address/1JUZ8dxsH67yZd9KcuqpsSPA6fENtzM3NU
source: https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/
puzzle.toJSON() absent fields are absent, never null
{
  "id": "quizchain/4",
  "chain": "bitcoin",
  "address": {
    "value": "1JUZ8dxsH67yZd9KcuqpsSPA6fENtzM3NU",
    "kind": "p2pkh",
    "hash160": "bfb03103ed7259e878deb4a72fc987f42fdce21e"
  },
  "status": "solved",
  "pubkey": {
    "value": "034c27064d1789e275d76e898f5d5525bf6a5833ca959e02269db025b196cecdec",
    "format": "compressed"
  },
  "key": {
    "wif": {
      "decrypted": "KwZXovJ7Fxu39q7TYmnwrjmBoYCcS86nga8snnsB6RDD5GXd86TX"
    },
    "seed": {
      "entropy": {
        "hash": "0574a857c65a79835fa888c5321facc875073f553b94d1985041fd8f995ea4fa",
        "source": {
          "url": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/",
          "description": "SHA-256 of the two words with the last three characters of the block 3 key appended"
        }
      }
    }
  },
  "prize": 0.007,
  "start_date": "2019-04-07 09:15:55",
  "solve_date": "2019-04-07 10:45:28",
  "solve_time": 5373,
  "source_url": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/",
  "transactions": [
    {
      "tx_type": "funding",
      "txid": "29eb1d7fdae7d1bc7cea6824ff4d7e2acf3935ce830c434a40dfe13bdd8e01b5",
      "date": "2019-04-07 09:15:55",
      "amount": 0.007
    },
    {
      "tx_type": "claim",
      "txid": "4a571d060233ed298ee8227be1596f89523b556d8af4d9378483f62a4aa95f14",
      "date": "2019-04-07 10:45:28",
      "amount": 0.00699322
    }
  ],
  "hints": [
    {
      "kind": "official",
      "text": "Do you know two words? They are in the word \"know\".",
      "source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/",
      "confirmation": {
        "url": "https://web.archive.org/web/20230611095720/https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/",
        "description": "Wayback capture of the post with the solution edit"
      },
      "answer": {
        "text": "The Chinese symbol (Kanji) for \"know\" is composed of the two elements \"arrow\" (to the left) and \"mouth\" (to the right).",
        "source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/"
      }
    },
    {
      "kind": "official",
      "text": "As always, take the solution string (no space between the two words), append the last three digits from the private key of the third block, run a SHA 256 hash on that and then use as entropy for brain wallet.",
      "source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/",
      "answer": {
        "text": "arrowmouth83S",
        "source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/"
      }
    },
    {
      "kind": "official",
      "text": "This one is difficult, so here is one extra hint. Look at my handle name.",
      "source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/",
      "answer": {
        "text": "The hint about my handlename was to point to the fact that it is a Japanese name.",
        "source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4/"
      }
    }
  ]
}

@agntn/puzzles·MIT license· Public data about public puzzles. Balances come from the chains' explorers through the worker, cached for five minutes. Every key here was public before it landed in a record.