quizchain/4
Solved on 2019-04-07 after 1h 29m, key published. 0.007 BTC on a Bitcoin address, 1JUZ8dxsH67yZd9KcuqpsSPA6fENtzM3NU. Part of 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.infohash160 bfb03103ed7259e878deb4a72fc987f42fdce21e
balance
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
- funding2019-04-070.007 BTC29eb1d7fdae7d1bc…3bdd8e01b5
- claim2019-04-070.00699322 BTC4a571d060233ed29…2a4aa95f14
hints · 3 · who said it, where, and what confirms that
officialDo you know two words? They are in the word "know".
source reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4 · confirmation 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)
Published answer
The Chinese symbol (Kanji) for "know" is composed of the two elements "arrow" (to the left) and "mouth" (to the right).
source reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4
officialAs 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 reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4
Published answer
arrowmouth83S
source reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4
officialThis one is difficult, so here is one extra hint. Look at my handle name.
source reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4
Published answer
The hint about my handlename was to point to the fact that it is a Japanese name.
source reddit.com/r/bitcoinpuzzles/comments/baejeg/medium_7_mbtc_quizchain_block_4
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/"
}
}
]
}