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recipe)\nentropy: 26ea250a918e2abb8ff02a149e1392a3 from https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbddijl\u002F7_mbtc_quizchain_block_43\u002F (MD5 of the year, BFUB, the book and the last three characters of the block 42 key, separated by spaces)\nstarted: 2019-04-15 07:01:42\nsolved: 2019-04-15 11:37:13 (4h 35m)\ntransactions: 2\n\tfunding\t2019-04-15 07:01:42\t0.007 BTC\t6b193b7857188262ee578c84944ad124c9dc8ee2a155f7cdf0306821bc399487\n\tclaim\t2019-04-15 11:37:13\t0.00690323 BTC\t3f0f2264e7a85e988cdf2e8b014b584095bae1b442bc1ec64441f7d743686b41\nclaim: https:\u002F\u002Fblockstream.info\u002Ftx\u002F3f0f2264e7a85e988cdf2e8b014b584095bae1b442bc1ec64441f7d743686b41\nhints: 3\n\tofficial\t-\tQuestion: Year of first Internet scam\tsource: https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\tanswer: 1604 BFUB Book of Swindles\tanswer source: https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\n\tofficial\t-\tFormat: [solution] BFUB [BFUB] [link]\tsource: https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\n\tofficial\t-\tResistance to immediate solving for this comes only from finding BFUB, so no hints for BFUB in this block. Should still be relatively easy.\tsource: https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\nexplorer: https:\u002F\u002Fblockstream.info\u002Faddress\u002F1MVWYyiyJVmNJRiEkyzcxp1gc5zmmftqrK\nsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbddijl\u002F7_mbtc_quizchain_block_43\u002F","43",false,true,[359,362,365],{"label":360,"value":361,"mono":357},"WIF","KwoHhHcGp7YYqEWQUs3XUdyNyqtLfh4aAhCgU2UwQsqgx12GidA8",{"label":363,"value":364,"mono":357},"entropy hash","26ea250a918e2abb8ff02a149e1392a3",{"label":366,"value":367,"mono":356,"href":352},"entropy source","MD5 of the year, BFUB, the book and the last three characters of the block 42 key, separated by spaces",[369,373],{"type":370,"txid":371,"date":343,"amount":341,"url":372},"funding","6b193b7857188262ee578c84944ad124c9dc8ee2a155f7cdf0306821bc399487","https:\u002F\u002Fblockstream.info\u002Ftx\u002F6b193b7857188262ee578c84944ad124c9dc8ee2a155f7cdf0306821bc399487",{"type":374,"txid":375,"date":344,"amount":376,"url":377},"claim","3f0f2264e7a85e988cdf2e8b014b584095bae1b442bc1ec64441f7d743686b41","0.00690323 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002F3f0f2264e7a85e988cdf2e8b014b584095bae1b442bc1ec64441f7d743686b41",[],[],[381,387,389],{"kind":382,"text":383,"source":384,"answer":385,"shared":356},"official","Question: Year of first Internet scam","https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain",{"text":386,"source":384},"1604 BFUB Book of Swindles",{"kind":382,"text":388,"source":384,"shared":356},"Format: [solution] BFUB [BFUB] [link]",{"kind":382,"text":390,"source":384,"shared":356},"Resistance to immediate solving for this comes only from finding BFUB, so no hints for BFUB in this block. Should still be relatively easy.","{\n  \"id\": \"quizchain\u002F43\",\n  \"chain\": \"bitcoin\",\n  \"address\": {\n    \"value\": \"1MVWYyiyJVmNJRiEkyzcxp1gc5zmmftqrK\",\n    \"kind\": \"p2pkh\",\n    \"hash160\": \"e0c6d4b1024148cee5ef15183b623763c580669d\"\n  },\n  \"status\": \"solved\",\n  \"pubkey\": {\n    \"value\": \"030b1a0b217a760fb1af63e43ed50174fa7804df180213e96b5372481de5c3289e\",\n    \"format\": \"compressed\"\n  },\n  \"key\": {\n    \"wif\": {\n      \"decrypted\": \"KwoHhHcGp7YYqEWQUs3XUdyNyqtLfh4aAhCgU2UwQsqgx12GidA8\"\n    },\n    \"seed\": {\n      \"entropy\": {\n        \"hash\": \"26ea250a918e2abb8ff02a149e1392a3\",\n        \"source\": {\n          \"url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbddijl\u002F7_mbtc_quizchain_block_43\u002F\",\n          \"description\": \"MD5 of the year, BFUB, the book and the last three characters of the block 42 key, separated by spaces\"\n        }\n      }\n    },\n    \"derived\": true\n  },\n  \"prize\": 0.007,\n  \"start_date\": \"2019-04-15 07:01:42\",\n  \"solve_date\": \"2019-04-15 11:37:13\",\n  \"solve_time\": 16531,\n  \"source_url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbddijl\u002F7_mbtc_quizchain_block_43\u002F\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"6b193b7857188262ee578c84944ad124c9dc8ee2a155f7cdf0306821bc399487\",\n      \"date\": \"2019-04-15 07:01:42\",\n      \"amount\": 0.007\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"3f0f2264e7a85e988cdf2e8b014b584095bae1b442bc1ec64441f7d743686b41\",\n      \"date\": \"2019-04-15 11:37:13\",\n      \"amount\": 0.00690323\n    }\n  ],\n  \"hints\": [\n    {\n      \"kind\": \"official\",\n      \"text\": \"Question: Year of first Internet scam\",\n      \"source\": \"https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\",\n      \"answer\": {\n        \"text\": \"1604 BFUB Book of Swindles\",\n        \"source\": \"https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Format: [solution] BFUB [BFUB] [link]\",\n      \"source\": \"https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Resistance to immediate solving for this comes only from finding BFUB, so no hints for BFUB in this block. Should still be relatively easy.\",\n      \"source\": \"https:\u002F\u002Fwww.wattpad.com\u002F720895205-second-complete-quizchain\"\n    }\n  ]\n}","quizchain\u002F42","quizchain\u002F44",43,77,{"id":397,"title":355,"body":398,"description":419,"extension":422,"meta":423,"navigation":357,"path":424,"seo":425,"stem":334,"__hash__":426},"stories\u002Fquizchain\u002F43.md",{"type":399,"value":400,"toc":418},"minimark",[401,406,410],[402,403,405],"h2",{"id":404},"the-first-internet-scam","The first internet scam",[407,408,409],"p",{},"The Reddit post was removed, so the question survives in the author's Wattpad list: \"Year of first Internet scam\".",[407,411,412,413,417],{},"The answer comes from a story in the Book of Swindles, ",[414,415,416],"code",{},"1604",", and the field is the book's title. Someone brute forced the three character link from block 42 and claimed this one three days before block 42 fell. The author thanked them for it. 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