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recipe)\nentropy: 92370551d3c9b67de4885578ac3291ba from https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F (MD5 of the code, TOMI and two words)\nstarted: 2019-05-16 22:51:06\nsolved: 2019-05-20 14:01:29 (3d 15h 10m)\ntransactions: 4\n\tfunding\t2019-05-16 22:51:06\t0.007 BTC\tb876a070c9dc65105b08bf11c179e9083656670852e4a5a8ca9c787aaf90ceca\n\tincrease\t2019-05-18 04:15:44\t0.007 BTC\t6f3e16265734581839c82d1660505f0dcd42f04a62c10f2c8bb7d754f966ec0f\n\tclaim\t2019-05-20 14:01:29\t0.005 BTC\t551bb1bde6aa455f3457e8bf86e904b67af428adad36eea92c87232f423412eb\n\tclaim\t2019-05-20 14:14:29\t0.00655264 BTC\tc09ac20686c7c43282676a91543576260c2f27cfb1992ff4ebcdf537c23024c0\nclaim: https:\u002F\u002Fblockstream.info\u002Ftx\u002F551bb1bde6aa455f3457e8bf86e904b67af428adad36eea92c87232f423412eb\nhints: 7\n\tofficial\t-\tQuestion: 11-9\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\tanswer: Solution was K-9, TOMI field was police dog. Method was replacing the \"K\" by the number 11 because that is the place of K in the alphabet. K-9 is pronounced like \"canine\", which is why this code is used in many police forces.\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\n\tofficial\t-\tFormat: [solution] TOMI [TOMI]\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\n\tofficial\t-\tFirst three digits of MD5 hash are 923.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\n\tofficial\t-\tFirst digit of solution only MD5 hash is 0.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\n\tofficial\t-\tFirst digit of TOMI field only MD5 hash is 6.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\n\tofficial\t-\tHint 1 (after 24 hours): Found the idea for this block in a related Wikipedia article.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\n\tofficial\t-\tHint 2 (after 48 hours): Relevant article is on number 9.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\nexplorer: https:\u002F\u002Fblockstream.info\u002Faddress\u002F1E3aJRAUQcW26ZYSRjR41PWTkkzgbifRAf\nsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F","9",false,true,[419,422,425],{"label":420,"value":421,"mono":417},"WIF","KyVcQKeGXypdEADis9xxTBE3Hc51YKt53kHu565JFGEn8ePmqgsf",{"label":423,"value":424,"mono":417},"entropy hash","92370551d3c9b67de4885578ac3291ba",{"label":426,"value":427,"mono":416,"href":412},"entropy source","MD5 of the code, TOMI and two words",[429,434,439,444],{"type":430,"txid":431,"date":403,"amount":432,"url":433},"funding","b876a070c9dc65105b08bf11c179e9083656670852e4a5a8ca9c787aaf90ceca","0.007 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002Fb876a070c9dc65105b08bf11c179e9083656670852e4a5a8ca9c787aaf90ceca",{"type":435,"txid":436,"date":437,"amount":432,"url":438},"increase","6f3e16265734581839c82d1660505f0dcd42f04a62c10f2c8bb7d754f966ec0f","2019-05-18 04:15:44","https:\u002F\u002Fblockstream.info\u002Ftx\u002F6f3e16265734581839c82d1660505f0dcd42f04a62c10f2c8bb7d754f966ec0f",{"type":440,"txid":441,"date":404,"amount":442,"url":443},"claim","551bb1bde6aa455f3457e8bf86e904b67af428adad36eea92c87232f423412eb","0.005 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002F551bb1bde6aa455f3457e8bf86e904b67af428adad36eea92c87232f423412eb",{"type":440,"txid":445,"date":446,"amount":447,"url":448},"c09ac20686c7c43282676a91543576260c2f27cfb1992ff4ebcdf537c23024c0","2019-05-20 14:14:29","0.00655264 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002Fc09ac20686c7c43282676a91543576260c2f27cfb1992ff4ebcdf537c23024c0",[],[],[452,457,459,461,463,465,467],{"kind":453,"text":454,"source":412,"answer":455,"shared":416},"official","Question: 11-9",{"text":456,"source":412},"Solution was K-9, TOMI field was police dog. Method was replacing the \"K\" by the number 11 because that is the place of K in the alphabet. K-9 is pronounced like \"canine\", which is why this code is used in many police forces.",{"kind":453,"text":458,"source":412,"shared":416},"Format: [solution] TOMI [TOMI]",{"kind":453,"text":460,"source":412,"shared":416},"First three digits of MD5 hash are 923.",{"kind":453,"text":462,"source":412,"shared":416},"First digit of solution only MD5 hash is 0.",{"kind":453,"text":464,"source":412,"shared":416},"First digit of TOMI field only MD5 hash is 6.",{"kind":453,"text":466,"source":412,"shared":416},"Hint 1 (after 24 hours): Found the idea for this block in a related Wikipedia article.",{"kind":453,"text":468,"source":412,"shared":416},"Hint 2 (after 48 hours): Relevant article is on number 9.","{\n  \"id\": \"quizchain2\u002F9\",\n  \"chain\": \"bitcoin\",\n  \"address\": {\n    \"value\": \"1E3aJRAUQcW26ZYSRjR41PWTkkzgbifRAf\",\n    \"kind\": \"p2pkh\",\n    \"hash160\": \"8f1643c9663e1fc9f1457e82747f3c863c4da292\"\n  },\n  \"status\": \"solved\",\n  \"pubkey\": {\n    \"value\": \"036952b20f35554e0ef24c157fae47e8a77624de86e33b7d2d6f4baf9bdc1c37c1\",\n    \"format\": \"compressed\"\n  },\n  \"key\": {\n    \"wif\": {\n      \"decrypted\": \"KyVcQKeGXypdEADis9xxTBE3Hc51YKt53kHu565JFGEn8ePmqgsf\"\n    },\n    \"seed\": {\n      \"entropy\": {\n        \"hash\": \"92370551d3c9b67de4885578ac3291ba\",\n        \"source\": {\n          \"url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\",\n          \"description\": \"MD5 of the code, TOMI and two words\"\n        }\n      }\n    },\n    \"derived\": true\n  },\n  \"prize\": 0.014,\n  \"start_date\": \"2019-05-16 22:51:06\",\n  \"solve_date\": \"2019-05-20 14:01:29\",\n  \"solve_time\": 313823,\n  \"source_url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"b876a070c9dc65105b08bf11c179e9083656670852e4a5a8ca9c787aaf90ceca\",\n      \"date\": \"2019-05-16 22:51:06\",\n      \"amount\": 0.007\n    },\n    {\n      \"tx_type\": \"increase\",\n      \"txid\": \"6f3e16265734581839c82d1660505f0dcd42f04a62c10f2c8bb7d754f966ec0f\",\n      \"date\": \"2019-05-18 04:15:44\",\n      \"amount\": 0.007\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"551bb1bde6aa455f3457e8bf86e904b67af428adad36eea92c87232f423412eb\",\n      \"date\": \"2019-05-20 14:01:29\",\n      \"amount\": 0.005\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"c09ac20686c7c43282676a91543576260c2f27cfb1992ff4ebcdf537c23024c0\",\n      \"date\": \"2019-05-20 14:14:29\",\n      \"amount\": 0.00655264\n    }\n  ],\n  \"hints\": [\n    {\n      \"kind\": \"official\",\n      \"text\": \"Question: 11-9\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\",\n      \"answer\": {\n        \"text\": \"Solution was K-9, TOMI field was police dog. Method was replacing the \\\"K\\\" by the number 11 because that is the place of K in the alphabet. K-9 is pronounced like \\\"canine\\\", which is why this code is used in many police forces.\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Format: [solution] TOMI [TOMI]\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First three digits of MD5 hash are 923.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of solution only MD5 hash is 0.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of TOMI field only MD5 hash is 6.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Hint 1 (after 24 hours): Found the idea for this block in a related Wikipedia article.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Hint 2 (after 48 hours): Relevant article is on number 9.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbq3ptu\u002F14_mbtc_quizchain2_block_9\u002F\"\n    }\n  ]\n}","quizchain2\u002F8","quizchain2\u002F10",9,10,{"id":475,"title":415,"body":476,"description":553,"extension":558,"meta":559,"navigation":417,"path":560,"seo":561,"stem":394,"__hash__":562},"stories\u002Fquizchain2\u002F9.md",{"type":477,"value":478,"toc":552},"minimark",[479,484,508,515,526,530,533,549],[480,481,483],"h2",{"id":482},"_11-9","11-9",[485,486,487,488,491,492,495,496,499,500,503,504,507],"p",{},"May 18. The question is just ",[489,490,483],"code",{},". Format ",[489,493,494],{},"[solution] TOMI [TOMI]",", prefixes ",[489,497,498],{},"923",", ",[489,501,502],{},"0"," and ",[489,505,506],{},"6",". The author expected it to be \"solved at sight\".",[485,509,510,511,514],{},"It wasn't. Players tried subtraction, Roman numerals, Atbash, block 2's key. One player announced \"Solved!\" with ",[489,512,513],{},"119 TOMI november top posted",". The prize didn't move. Hint 1 a day later: the idea came from a Wikipedia article. Hint 2 the day after: the article is about the number 9.",[485,516,517,518,521,522,525],{},"K is the 11th letter. 11-9 is K-9, said like \"canine\". So the answer is ",[489,519,520],{},"K-9"," and the TOMI field is ",[489,523,524],{},"police dog",". Good boy.",[480,527,529],{"id":528},"funded-twice","Funded twice",[485,531,532],{},"There's a twist in the post itself. The author funded the block while writing it, then forgot and funded it again on the day of the post. Two outputs of 7 mBTC on one address. \"Whoever solves this block walks away with 14 mbtc instead of 7.\" No taking it back, the author says.",[485,534,535,536,540,541,544,545,548],{},"So after hint 2, a race. Several players solved it within minutes. The first claim confirmed at ",[537,538,539],"strong",{},"14:01:29 UTC",", splitting one output into two 2.5 mBTC halves with a 2 mBTC fee. The second, at ",[537,542,543],{},"14:14:29",", took the other output. u\u002Fsilver_anth wrote they \"got double spent and lost the prize\". u\u002FQuantris posted ",[489,546,547],{},"KyVcQKeGXy",", the start of the key, as proof they had it too.",[485,550,551],{},"A lottery, as the author put it. So who got which output? The chain doesn't say. The record keeps both claims and names nobody. Nobody printed the whole key, so the record derives it.",{"title":553,"searchDepth":554,"depth":554,"links":555},"",2,[556,557],{"id":482,"depth":554,"text":483},{"id":528,"depth":554,"text":529},"md",{},"\u002Fquizchain2\u002F9",{"description":553},"jbuFpcFvbDF_4Mie80OBfCufnAVvBgzCZc2zPbVoBfs",1790876849845]