quizchain/5
Solved on 2019-04-07 after 1h 40m, key published. 0.007 BTC on a Bitcoin address, 1JR9yiCGuMrKQ19pbt2GJudpv1c5ZvXxK2. Part of Quizchain.
- prize
- 0.007 BTC
- key material
- wif
- public key
- compressed · 020d091a1e…9a3eb3f9
- started
- 2019-04-07
- solved
- 2019-04-07 · 1h 40m
- verification
- key derives the address
address · p2pkh
1JR9yiCGuMrKQ19pbt2GJudpv1c5ZvXxK2 blockstream.infohash160 bf0b9d9c4d25a5fc9f4541ecc1c9fb5bd69e65fb
balance
key material · on the record
- WIF
- KwK9P8R81i3JRFt5Ne7xT92hUxbAyKtkcxJcESd9x2rrXKSwQKPb
- entropy hash
- c534df8925c386ef2cad7502a427f478057357bc9210cb75e4845bd21762e1d5
- entropy source
- SHA-256 of Satoshi's sentence with the last three characters of the block 4 key appended
transactions · 2
- funding2019-04-070.007 BTCff591de99487f386…c04ff4eb35
- claim2019-04-070.006435 BTCb4d5865834c268b7…791f667491
hints · 3 · who said it, where, and what confirms that
officialOn this day ten years ago, how many bitcoins would you mine on average?
source reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5 · confirmation web.archive.org/web/20230611162510/https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5 (Wayback capture of the post with its updates and solution)
Published answer
Satoshi answered this question on bitcointalk in 2009 like this: "Typically a few hundred right now."
source reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5
officialI skip explaining the format this time, if you don't know it, look at one of the previous "Quizchain" posts.
source reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5
Published answer
Add last three digits of previous private key 6TX to claim the funds.
source reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5
officialAnswer needs to be in exactly the same format as Satoshi's answer to this question in 2009.
source reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5
toolpuzzles_show
what a model reads · MCP · Pi · OMP
quizchain/5 solved 0.007 BTC 1JR9yiCGuMrKQ19pbt2GJudpv1c5ZvXxK2
chain: bitcoin address kind: p2pkh
hash160: bf0b9d9c4d25a5fc9f4541ecc1c9fb5bd69e65fb
public key: 020d091a1ea789d090a1b9f95a8bdf6b538f71749cc08eeb921cc84ba79a3eb3f9 (compressed)
private key: KwK9P8R81i3JRFt5Ne7xT92hUxbAyKtkcxJcESd9x2rrXKSwQKPb (wif)
entropy: c534df8925c386ef2cad7502a427f478057357bc9210cb75e4845bd21762e1d5 from https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/ (SHA-256 of Satoshi's sentence with the last three characters of the block 4 key appended)
started: 2019-04-07 11:08:39
solved: 2019-04-07 12:49:32 (1h 40m)
transactions: 2
funding 2019-04-07 11:08:39 0.007 BTC ff591de99487f386be72fe6e8a624a45b40b6c3f89344445d68036c04ff4eb35
claim 2019-04-07 12:49:32 0.006435 BTC b4d5865834c268b76a3b1ff4a311b6467af82b2be5e863e3696a03791f667491
claim: https://blockstream.info/tx/b4d5865834c268b76a3b1ff4a311b6467af82b2be5e863e3696a03791f667491
hints: 3
official - On this day ten years ago, how many bitcoins would you mine on average? source: https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/ confirmation: https://web.archive.org/web/20230611162510/https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/ (Wayback capture of the post with its updates and solution) answer: Satoshi answered this question on bitcointalk in 2009 like this: "Typically a few hundred right now." answer source: https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/
official - I skip explaining the format this time, if you don't know it, look at one of the previous "Quizchain" posts. source: https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/ answer: Add last three digits of previous private key 6TX to claim the funds. answer source: https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/
official - Answer needs to be in exactly the same format as Satoshi's answer to this question in 2009. source: https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/
explorer: https://blockstream.info/address/1JR9yiCGuMrKQ19pbt2GJudpv1c5ZvXxK2
source: https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/puzzle.toJSON() absent fields are absent, never null
{
"id": "quizchain/5",
"chain": "bitcoin",
"address": {
"value": "1JR9yiCGuMrKQ19pbt2GJudpv1c5ZvXxK2",
"kind": "p2pkh",
"hash160": "bf0b9d9c4d25a5fc9f4541ecc1c9fb5bd69e65fb"
},
"status": "solved",
"pubkey": {
"value": "020d091a1ea789d090a1b9f95a8bdf6b538f71749cc08eeb921cc84ba79a3eb3f9",
"format": "compressed"
},
"key": {
"wif": {
"decrypted": "KwK9P8R81i3JRFt5Ne7xT92hUxbAyKtkcxJcESd9x2rrXKSwQKPb"
},
"seed": {
"entropy": {
"hash": "c534df8925c386ef2cad7502a427f478057357bc9210cb75e4845bd21762e1d5",
"source": {
"url": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/",
"description": "SHA-256 of Satoshi's sentence with the last three characters of the block 4 key appended"
}
}
}
},
"prize": 0.007,
"start_date": "2019-04-07 11:08:39",
"solve_date": "2019-04-07 12:49:32",
"solve_time": 6053,
"source_url": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/",
"transactions": [
{
"tx_type": "funding",
"txid": "ff591de99487f386be72fe6e8a624a45b40b6c3f89344445d68036c04ff4eb35",
"date": "2019-04-07 11:08:39",
"amount": 0.007
},
{
"tx_type": "claim",
"txid": "b4d5865834c268b76a3b1ff4a311b6467af82b2be5e863e3696a03791f667491",
"date": "2019-04-07 12:49:32",
"amount": 0.006435
}
],
"hints": [
{
"kind": "official",
"text": "On this day ten years ago, how many bitcoins would you mine on average?",
"source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/",
"confirmation": {
"url": "https://web.archive.org/web/20230611162510/https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/",
"description": "Wayback capture of the post with its updates and solution"
},
"answer": {
"text": "Satoshi answered this question on bitcointalk in 2009 like this: \"Typically a few hundred right now.\"",
"source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/"
}
},
{
"kind": "official",
"text": "I skip explaining the format this time, if you don't know it, look at one of the previous \"Quizchain\" posts.",
"source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/",
"answer": {
"text": "Add last three digits of previous private key 6TX to claim the funds.",
"source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/"
}
},
{
"kind": "official",
"text": "Answer needs to be in exactly the same format as Satoshi's answer to this question in 2009.",
"source": "https://www.reddit.com/r/bitcoinpuzzles/comments/baf89m/easy_7_mbtc_quizchain_block_5/"
}
]
}