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5933d9f1db6fbd064cf19004cc8e62b3 from https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F (MD5 of the letter, TOMI and three words)\nstarted: 2019-05-30 12:43:29\nsolved: 2019-05-30 15:55:40 (3h 12m)\ntransactions: 2\n\tfunding\t2019-05-30 12:43:29\t0.007 BTC\tf3f49ed66c0041cad2cde7cab0132094811b6c1d1c8e3dd189b59fc110dd98c0\n\tclaim\t2019-05-30 15:55:40\t0.00665811 BTC\t9bd5338638e98e9f25acf41f1eb36e8ffc0b1512927bbfe6da8cfb6f013fa8d4\nclaim: https:\u002F\u002Fblockstream.info\u002Ftx\u002F9bd5338638e98e9f25acf41f1eb36e8ffc0b1512927bbfe6da8cfb6f013fa8d4\ntechniques: 1\n\tmd5-to-bip39-entropy\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\nhints: 5\n\tofficial\t-\tQuestion: PG\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\tanswer: Solution was \"P\" and TOMI field was \"Pretty Good Privacy\". I wanted to use this idea because the link to Bitcoin's cypherpunk roots.\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\n\tofficial\t-\tFormat: [solution] TOMI [TOMI]\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\n\tofficial\t-\tFirst 3 digits of MD5 hash are 593.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\n\tofficial\t-\tFirst digit of solution only MD5 hash is 4.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\n\tofficial\t-\tFirst digit of TOMI field only MD5 hash is 5.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\nexplorer: https:\u002F\u002Fblockstream.info\u002Faddress\u002F14bavWYFj3GDbXG3KJihTUuWaZu6oce4zT\nsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\nfiles: 0 files, 3 archived sources; puzzles_assets lists them and reads one by its path","23",false,true,[513,516,519],{"label":514,"value":515,"mono":511},"WIF","L1VFUsRTgdYZnFGdX14RNb9e8AoWHgmRTsn51b3DYhMjLvpvhn4X",{"label":517,"value":518,"mono":511},"entropy hash","5933d9f1db6fbd064cf19004cc8e62b3",{"label":520,"value":521,"mono":510,"href":506},"entropy source","MD5 of the letter, TOMI and three words",[523,527],{"type":524,"txid":525,"date":497,"amount":495,"url":526},"funding","f3f49ed66c0041cad2cde7cab0132094811b6c1d1c8e3dd189b59fc110dd98c0","https:\u002F\u002Fblockstream.info\u002Ftx\u002Ff3f49ed66c0041cad2cde7cab0132094811b6c1d1c8e3dd189b59fc110dd98c0",{"type":528,"txid":529,"date":498,"amount":530,"url":531},"claim","9bd5338638e98e9f25acf41f1eb36e8ffc0b1512927bbfe6da8cfb6f013fa8d4","0.00665811 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002F9bd5338638e98e9f25acf41f1eb36e8ffc0b1512927bbfe6da8cfb6f013fa8d4",[],[534,539,541,543,545],{"kind":535,"text":536,"source":506,"answer":537,"shared":510},"official","Question: PG",{"text":538,"source":506},"Solution was \"P\" and TOMI field was \"Pretty Good Privacy\". I wanted to use this idea because the link to Bitcoin's cypherpunk roots.",{"kind":535,"text":540,"source":506,"shared":510},"Format: [solution] TOMI [TOMI]",{"kind":535,"text":542,"source":506,"shared":510},"First 3 digits of MD5 hash are 593.",{"kind":535,"text":544,"source":506,"shared":510},"First digit of solution only MD5 hash is 4.",{"kind":535,"text":546,"source":506,"shared":510},"First digit of TOMI field only MD5 hash is 5.",[548],{"name":549,"source":506,"scope":550},"md5-to-bip39-entropy","puzzle","{\n  \"id\": \"quizchain2\u002F23\",\n  \"chain\": \"bitcoin\",\n  \"address\": {\n    \"value\": \"14bavWYFj3GDbXG3KJihTUuWaZu6oce4zT\",\n    \"kind\": \"p2pkh\",\n    \"hash160\": \"2772d6522448004d5a704cf648a48618c06133bb\"\n  },\n  \"status\": \"solved\",\n  \"pubkey\": {\n    \"value\": \"03ed49b3afa2b4bd7762ee3855d0cb25d8a9ac086ca86353e984ab164dc68cfa19\",\n    \"format\": \"compressed\"\n  },\n  \"key\": {\n    \"wif\": {\n      \"decrypted\": \"L1VFUsRTgdYZnFGdX14RNb9e8AoWHgmRTsn51b3DYhMjLvpvhn4X\"\n    },\n    \"seed\": {\n      \"entropy\": {\n        \"hash\": \"5933d9f1db6fbd064cf19004cc8e62b3\",\n        \"source\": {\n          \"url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\",\n          \"description\": \"MD5 of the letter, TOMI and three words\"\n        }\n      }\n    },\n    \"derived\": true\n  },\n  \"prize\": 0.007,\n  \"start_date\": \"2019-05-30 12:43:29\",\n  \"solve_date\": \"2019-05-30 15:55:40\",\n  \"solve_time\": 11531,\n  \"source_url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"f3f49ed66c0041cad2cde7cab0132094811b6c1d1c8e3dd189b59fc110dd98c0\",\n      \"date\": \"2019-05-30 12:43:29\",\n      \"amount\": 0.007\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"9bd5338638e98e9f25acf41f1eb36e8ffc0b1512927bbfe6da8cfb6f013fa8d4\",\n      \"date\": \"2019-05-30 15:55:40\",\n      \"amount\": 0.00665811\n    }\n  ],\n  \"hints\": [\n    {\n      \"kind\": \"official\",\n      \"text\": \"Question: PG\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\",\n      \"answer\": {\n        \"text\": \"Solution was \\\"P\\\" and TOMI field was \\\"Pretty Good Privacy\\\". I wanted to use this idea because the link to Bitcoin's cypherpunk roots.\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Format: [solution] TOMI [TOMI]\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First 3 digits of MD5 hash are 593.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of solution only MD5 hash is 4.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of TOMI field only MD5 hash is 5.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\"\n    }\n  ],\n  \"techniques\": [\n    {\n      \"name\": \"md5-to-bip39-entropy\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002FGrycoin\u002Fcomments\u002Fbustcu\u002F7_mbtc_quizchain2_block_23\u002F\"\n    }\n  ]\n}",[553,560,567],{"kind":554,"label":554,"path":555,"url":556,"format":557,"screenshot":558,"origin":506,"date":559},"source","assets\u002Fsources\u002Fquizchain2\u002Faoinakamoto-2019-05-30-bustcu.md","\u002Fassets\u002Fsources\u002Fquizchain2\u002Faoinakamoto-2019-05-30-bustcu.md","markdown","\u002Fassets\u002Fsources\u002Fquizchain2\u002Faoinakamoto-2019-05-30-bustcu.png","2019-05-30",{"kind":554,"label":561,"path":562,"url":563,"format":557,"screenshot":564,"origin":565,"date":566},"author's post","assets\u002Fsources\u002Fsatoshi-birthday-quiz\u002Faoinakamoto-2019-04-05-b9l37o.md","\u002Fassets\u002Fsources\u002Fsatoshi-birthday-quiz\u002Faoinakamoto-2019-04-05-b9l37o.md","\u002Fassets\u002Fsources\u002Fsatoshi-birthday-quiz\u002Faoinakamoto-2019-04-05-b9l37o.png","https:\u002F\u002Fwww.reddit.com\u002Fr\u002FBitcoin\u002Fcomments\u002Fb9l37o\u002F","2019-04-05",{"kind":554,"label":561,"path":568,"url":569,"format":557,"screenshot":570,"origin":571,"date":572},"assets\u002Fsources\u002Fsatoshi-birthday-quiz\u002Faoinakamoto-2019-04-10-ekjcc1k.md","\u002Fassets\u002Fsources\u002Fsatoshi-birthday-quiz\u002Faoinakamoto-2019-04-10-ekjcc1k.md","\u002Fassets\u002Fsources\u002Fsatoshi-birthday-quiz\u002Faoinakamoto-2019-04-10-ekjcc1k.png","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbbij0e\u002Fmeidum_7_mbtc_quizchain_block_18\u002Fekjcc1k\u002F","2019-04-10","quizchain2\u002F22","quizchain2\u002F24",23,77,{"id":578,"title":509,"body":579,"description":651,"extension":655,"meta":656,"navigation":511,"path":657,"seo":658,"stem":488,"__hash__":659},"stories\u002Fquizchain2\u002F23.md",{"type":580,"value":581,"toc":650},"minimark",[582,587,612,615,619,635,642],[583,584,586],"h2",{"id":585},"two-letters","Two letters",[588,589,590,591,595,596,599,600,603,604,607,608,611],"p",{},"May 30, 2019, eight minutes after the block 22 post. The question is ",[592,593,594],"code",{},"PG",". The format is ",[592,597,598],{},"[solution] TOMI [TOMI]",", with digits ",[592,601,602],{},"593",", ",[592,605,606],{},"4"," and ",[592,609,610],{},"5",".",[588,613,614],{},"The funding confirmed twelve minutes before the post this time. Lesson learned from block 22: fund close to posting, so nobody gets a five hour head start.",[583,616,618],{"id":617},"the-missing-p","The missing P",[588,620,621,623,624,627,628,630,631,634],{},[592,622,594],{}," is short a letter. Which one? Add ",[592,625,626],{},"P"," and you get PGP, Pretty Good Privacy. So the solution is just ",[592,629,626],{},", and the TOMI field is ",[592,632,633],{},"Pretty Good Privacy",". The author picked it for Bitcoin's cypherpunk roots.",[588,636,637,638,641],{},"u\u002Fmooncritic tried ",[592,639,640],{},"Project Gutenberg",". Not bad. Not it.",[588,643,644,645,649],{},"The claim confirmed at ",[646,647,648],"strong",{},"15:55:40 UTC",", about three hours in. Nobody posted the string. u\u002Fpuzzleponky called it a good block, \"not too easy but a nice solution with an obvious TOMI\". A one letter solution that still needs a TOMI field. That's the brute force fear in a nutshell.",{"title":651,"searchDepth":507,"depth":507,"links":652},"",[653,654],{"id":585,"depth":507,"text":586},{"id":617,"depth":507,"text":618},"md",{},"\u002Fquizchain2\u002F23",{"description":651},"TwhVH8-8NmCtISSsDx8b9NItGk-U2cgEJeAFUVpgrA8",1791479585747]