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recipe)\nentropy: 33c6780dcbd5927d8510d924278a0e4e from https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F (MD5 of the band, TOMI, two words and the whole block 76 key of the first run)\nstarted: 2019-05-11 00:21:12\nsolved: 2019-05-13 23:25:35 (2d 23h 4m)\ntransactions: 2\n\tfunding\t2019-05-11 00:21:12\t0.077 BTC\td79b97700a9a55b346c38820c1194cda0fe73ca1b831ae63cfb2e16e446eb90b\n\tclaim\t2019-05-13 23:25:35\t0.07669453 BTC\tc7dc06980a2986191465cc1c47612bec051693d6f8d4118ecc5f9131a84af8ca\nclaim: https:\u002F\u002Fblockstream.info\u002Ftx\u002Fc7dc06980a2986191465cc1c47612bec051693d6f8d4118ecc5f9131a84af8ca\nhints: 9\n\tofficial\t-\tQuestion: A rather famous naMe.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\tanswer: As the winner has explained in comments, solution was U2 (a rather famous band name). And it was derived from the hint by reading M upside down and then W as UU, which is one step away from the solution. TOMI field was just \"upside down\".\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\n\tofficial\t-\tFormat: [solution] TOMI [TOMI] [link]\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\tanswer: U2 TOMI upside down L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fendzxka\u002F\n\tofficial\t-\tUse L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F (private key of block 76) as a link for this block.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\n\tofficial\t-\tFIrst three digits of MD5 hash are 33c.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\n\tofficial\t-\tFirst digit of MD5 hash of solution only is 4.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\n\tofficial\t-\tFirst digit of MD5 hash of TOMI field only is e.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\n\tofficial\t-\tHint: Uses method of a recent previous block.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fen7okiq\u002F\n\tofficial\t-\tOne in the ten between 67 and 76.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fena1bdm\u002F\n\tofficial\t-\tHint number 2: block 69\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fendvvgh\u002F\nexplorer: https:\u002F\u002Fblockstream.info\u002Faddress\u002F15BbSHKqRsaH9oGk8zfTD5NZfRdXyySvMS\nsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F","1",false,true,[419,422,425],{"label":420,"value":421,"mono":417},"WIF","L39LYDM5ehxxN9H6MLwQ2duJbsVucNuoHwZJAaYfLhL9RtHVHZAt",{"label":423,"value":424,"mono":417},"entropy hash","33c6780dcbd5927d8510d924278a0e4e",{"label":426,"value":427,"mono":416,"href":412},"entropy source","MD5 of the band, TOMI, two words and the whole block 76 key of the first run",[429,433],{"type":430,"txid":431,"date":403,"amount":401,"url":432},"funding","d79b97700a9a55b346c38820c1194cda0fe73ca1b831ae63cfb2e16e446eb90b","https:\u002F\u002Fblockstream.info\u002Ftx\u002Fd79b97700a9a55b346c38820c1194cda0fe73ca1b831ae63cfb2e16e446eb90b",{"type":434,"txid":435,"date":404,"amount":436,"url":437},"claim","c7dc06980a2986191465cc1c47612bec051693d6f8d4118ecc5f9131a84af8ca","0.07669453 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002Fc7dc06980a2986191465cc1c47612bec051693d6f8d4118ecc5f9131a84af8ca",[],[],[441,446,451,453,455,457,459,462,465],{"kind":442,"text":443,"source":412,"answer":444,"shared":416},"official","Question: A rather famous naMe.",{"text":445,"source":412},"As the winner has explained in comments, solution was U2 (a rather famous band name). And it was derived from the hint by reading M upside down and then W as UU, which is one step away from the solution. TOMI field was just \"upside down\".",{"kind":442,"text":447,"source":412,"answer":448,"shared":416},"Format: [solution] TOMI [TOMI] [link]",{"text":449,"source":450},"U2 TOMI upside down L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fendzxka\u002F",{"kind":442,"text":452,"source":412,"shared":416},"Use L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F (private key of block 76) as a link for this block.",{"kind":442,"text":454,"source":412,"shared":416},"FIrst three digits of MD5 hash are 33c.",{"kind":442,"text":456,"source":412,"shared":416},"First digit of MD5 hash of solution only is 4.",{"kind":442,"text":458,"source":412,"shared":416},"First digit of MD5 hash of TOMI field only is e.",{"kind":442,"text":460,"source":461,"shared":416},"Hint: Uses method of a recent previous block.","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fen7okiq\u002F",{"kind":442,"text":463,"source":464,"shared":416},"One in the ten between 67 and 76.","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fena1bdm\u002F",{"kind":442,"text":466,"source":467,"shared":416},"Hint number 2: block 69","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fendvvgh\u002F","{\n  \"id\": \"quizchain2\u002F1\",\n  \"chain\": \"bitcoin\",\n  \"address\": {\n    \"value\": \"15BbSHKqRsaH9oGk8zfTD5NZfRdXyySvMS\",\n    \"kind\": \"p2pkh\",\n    \"hash160\": \"2de1688bdbb6846a5f15f87fa71031d6cdcbec03\"\n  },\n  \"status\": \"solved\",\n  \"pubkey\": {\n    \"value\": \"03bb9076fd7548a8bb6e28887eddbecba9c70fca75ebe4a926bbee1ca3384a0834\",\n    \"format\": \"compressed\"\n  },\n  \"key\": {\n    \"wif\": {\n      \"decrypted\": \"L39LYDM5ehxxN9H6MLwQ2duJbsVucNuoHwZJAaYfLhL9RtHVHZAt\"\n    },\n    \"seed\": {\n      \"entropy\": {\n        \"hash\": \"33c6780dcbd5927d8510d924278a0e4e\",\n        \"source\": {\n          \"url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\",\n          \"description\": \"MD5 of the band, TOMI, two words and the whole block 76 key of the first run\"\n        }\n      }\n    },\n    \"derived\": true\n  },\n  \"prize\": 0.077,\n  \"start_date\": \"2019-05-11 00:21:12\",\n  \"solve_date\": \"2019-05-13 23:25:35\",\n  \"solve_time\": 255863,\n  \"source_url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"d79b97700a9a55b346c38820c1194cda0fe73ca1b831ae63cfb2e16e446eb90b\",\n      \"date\": \"2019-05-11 00:21:12\",\n      \"amount\": 0.077\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"c7dc06980a2986191465cc1c47612bec051693d6f8d4118ecc5f9131a84af8ca\",\n      \"date\": \"2019-05-13 23:25:35\",\n      \"amount\": 0.07669453\n    }\n  ],\n  \"hints\": [\n    {\n      \"kind\": \"official\",\n      \"text\": \"Question: A rather famous naMe.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\",\n      \"answer\": {\n        \"text\": \"As the winner has explained in comments, solution was U2 (a rather famous band name). And it was derived from the hint by reading M upside down and then W as UU, which is one step away from the solution. TOMI field was just \\\"upside down\\\".\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Format: [solution] TOMI [TOMI] [link]\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\",\n      \"answer\": {\n        \"text\": \"U2 TOMI upside down L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fendzxka\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Use L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F (private key of block 76) as a link for this block.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"FIrst three digits of MD5 hash are 33c.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of MD5 hash of solution only is 4.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of MD5 hash of TOMI field only is e.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002F77_mbtc_quizchain2_block_1\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Hint: Uses method of a recent previous block.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fen7okiq\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"One in the ten between 67 and 76.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fena1bdm\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Hint number 2: block 69\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbn5ucg\u002Fcomment\u002Fendvvgh\u002F\"\n    }\n  ]\n}","quizchain2\u002F2",1,10,{"id":473,"title":415,"body":474,"description":543,"extension":547,"meta":548,"navigation":417,"path":549,"seo":550,"stem":394,"__hash__":551},"stories\u002Fquizchain2\u002F1.md",{"type":475,"value":476,"toc":542},"minimark",[477,482,486,506,509,513,516,527,539],[478,479,481],"h2",{"id":480},"a-famous-name-upside-down","A famous naMe, upside down",[483,484,485],"p",{},"May 11, 2019. The first run ended at block 77, and its last block had another mistake in it. House rule: a failed block makes the next one 77 mBTC. So the second run opens big.",[483,487,488,489,493,494,497,498,501,502,505],{},"The question is four words long. \"A rather famous naMe.\" Someone asked right away whether the capital M was on purpose. \"It is.\" The format is ",[490,491,492],"code",{},"[solution] TOMI [TOMI] [link]",", and the link is the whole block 76 key of the first run. The post adds the first digits of three MD5 hashes: ",[490,495,496],{},"33c"," for the full string, ",[490,499,500],{},"4"," for the answer, ",[490,503,504],{},"e"," for the TOMI field.",[483,507,508],{},"Players threw everything at it. Pokémon, Canadian MPs, Dorian Nakamoto, the royal family. Nothing.",[478,510,512],{"id":511},"three-hints-and-a-band","Three hints and a band",[483,514,515],{},"On day two the author wrote: \"Uses method of a recent previous block.\" Which one? \"One in the ten between 67 and 76.\" Then, late on May 13, the second hint just said \"block 69\".",[483,517,518,519,522,523,526],{},"Block 69 of the first run was \"Upside down\". Its answer was ",[490,520,521],{},"WM",". Read the M in ",[490,524,525],{},"naMe"," upside down and you get W. Say W out loud. Double U. Two U's. U2.",[483,528,529,530,534,535,538],{},"The claim confirmed at ",[531,532,533],"strong",{},"23:25:35 UTC",", 24 minutes after the hint. Ten minutes later u\u002FRandomiser posted the string: ",[490,536,537],{},"U2 TOMI upside down"," and the block 76 key. They'd been trying names that start with W. Hard to blame them. A band was not on anybody's list.",[483,540,541],{},"The author had one more fun fact. U2 shrinks to a single letter, W, and W has an upside down partner, M. Cute.",{"title":543,"searchDepth":413,"depth":413,"links":544},"",[545,546],{"id":480,"depth":413,"text":481},{"id":511,"depth":413,"text":512},"md",{},"\u002Fquizchain2\u002F1",{"description":543},"xkzRgRsTJEphxh6sAJwKYhh30y1QMRU_d_SOOu8zXaY",1790876849625]