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from https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F (MD5 of the word, TOMI, two words and the whole block 76 key of the first run)\nstarted: 2019-05-12 00:45:26\nsolved: 2019-05-12 02:12:14 (1h 26m)\ntransactions: 2\n\tfunding\t2019-05-12 00:45:26\t0.007 BTC\t5d3b46fa708c477806305e9c9a1dde18d1ed7720177312bc2d2f7b0743a5a089\n\tclaim\t2019-05-12 02:12:14\t0.0069809 BTC\t581b85ceac835ff89c568fc0981b233864308a9cb3423ad79bb97d719cfbe718\nclaim: https:\u002F\u002Fblockstream.info\u002Ftx\u002F581b85ceac835ff89c568fc0981b233864308a9cb3423ad79bb97d719cfbe718\nhints: 6\n\tofficial\t-\tQuestion: dirty word with XA\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\tanswer: Solution was \"reorg\" and TOMI field was \"CZ Binance\". This used the recent news on the Binance hack and the discussion on doing a BItcoin chain reorg. CZ apologized for using this \"dirty word\". I have not much to add, except that the \"XA\" in the question was \"CZ\" in Atbash code.\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\n\tofficial\t-\tFormat: [solution] TOMI [TOMI] [link]\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\tanswer: reorg TOMI CZ Binance L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002Fcomment\u002Fen6delr\u002F\n\tofficial\t-\tUse the private key from block 76 for this again as a link. That private key is L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\n\tofficial\t-\tFirst three digits of MD5 hash are 5f6.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\n\tofficial\t-\tFirst digit of solution only MD5 hash is 1.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\n\tofficial\t-\tFIrst digit of TOMI only MD5 hash is 0.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\nexplorer: https:\u002F\u002Fblockstream.info\u002Faddress\u002F1FsYtK22FBG7Ps3K7KZUYDQRs6gDxXjwQX\nsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F","3",false,[418,422,425],{"label":419,"value":420,"mono":421},"WIF","L488KiS3jUut79rDM6gwxUdg7Qm1SXwQnMasKLpzFzb6KrNLsFpT",true,{"label":423,"value":424,"mono":421},"entropy hash","5f6870da0f9c9553647e89c89d79f9a6",{"label":426,"value":427,"mono":416,"href":412},"entropy source","MD5 of the word, 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","5d3b46fa708c477806305e9c9a1dde18d1ed7720177312bc2d2f7b0743a5a089","https:\u002F\u002Fblockstream.info\u002Ftx\u002F5d3b46fa708c477806305e9c9a1dde18d1ed7720177312bc2d2f7b0743a5a089",{"type":434,"txid":435,"date":404,"amount":436,"url":437},"claim","581b85ceac835ff89c568fc0981b233864308a9cb3423ad79bb97d719cfbe718","0.0069809 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002F581b85ceac835ff89c568fc0981b233864308a9cb3423ad79bb97d719cfbe718",[],[],[441,446,451,453,455,457],{"kind":442,"text":443,"source":412,"answer":444,"shared":416},"official","Question: dirty word with XA",{"text":445,"source":412},"Solution was \"reorg\" and TOMI field was \"CZ Binance\". This used the recent news on the Binance hack and the discussion on doing a BItcoin chain reorg. CZ apologized for using this \"dirty word\". I have not much to add, except that the \"XA\" in the question was \"CZ\" in Atbash code.",{"kind":442,"text":447,"source":412,"answer":448,"shared":416},"Format: [solution] TOMI [TOMI] [link]",{"text":449,"source":450},"reorg TOMI CZ Binance L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002Fcomment\u002Fen6delr\u002F",{"kind":442,"text":452,"source":412,"shared":416},"Use the private key from block 76 for this again as a link. That private key is L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F.",{"kind":442,"text":454,"source":412,"shared":416},"First three digits of MD5 hash are 5f6.",{"kind":442,"text":456,"source":412,"shared":416},"First digit of solution only MD5 hash is 1.",{"kind":442,"text":458,"source":412,"shared":416},"FIrst digit of TOMI only MD5 hash is 0.","{\n  \"id\": \"quizchain2\u002F3\",\n  \"chain\": \"bitcoin\",\n  \"address\": {\n    \"value\": \"1FsYtK22FBG7Ps3K7KZUYDQRs6gDxXjwQX\",\n    \"kind\": \"p2pkh\",\n    \"hash160\": \"a3212ccf8438536aa212e5a1adbca17de7713b58\"\n  },\n  \"status\": \"solved\",\n  \"pubkey\": {\n    \"value\": \"02f4db70c3801528c31a79093e72b1bf9e9fe0c1e94e3539e0632eb338166a8701\",\n    \"format\": \"compressed\"\n  },\n  \"key\": {\n    \"wif\": {\n      \"decrypted\": \"L488KiS3jUut79rDM6gwxUdg7Qm1SXwQnMasKLpzFzb6KrNLsFpT\"\n    },\n    \"seed\": {\n      \"entropy\": {\n        \"hash\": \"5f6870da0f9c9553647e89c89d79f9a6\",\n        \"source\": {\n          \"url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\",\n          \"description\": \"MD5 of the word, TOMI, two words and the whole block 76 key of the first run\"\n        }\n      }\n    }\n  },\n  \"prize\": 0.007,\n  \"start_date\": \"2019-05-12 00:45:26\",\n  \"solve_date\": \"2019-05-12 02:12:14\",\n  \"solve_time\": 5208,\n  \"source_url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"5d3b46fa708c477806305e9c9a1dde18d1ed7720177312bc2d2f7b0743a5a089\",\n      \"date\": \"2019-05-12 00:45:26\",\n      \"amount\": 0.007\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"581b85ceac835ff89c568fc0981b233864308a9cb3423ad79bb97d719cfbe718\",\n      \"date\": \"2019-05-12 02:12:14\",\n      \"amount\": 0.0069809\n    }\n  ],\n  \"hints\": [\n    {\n      \"kind\": \"official\",\n      \"text\": \"Question: dirty word with XA\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\",\n      \"answer\": {\n        \"text\": \"Solution was \\\"reorg\\\" and TOMI field was \\\"CZ Binance\\\". This used the recent news on the Binance hack and the discussion on doing a BItcoin chain reorg. CZ apologized for using this \\\"dirty word\\\". I have not much to add, except that the \\\"XA\\\" in the question was \\\"CZ\\\" in Atbash code.\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Format: [solution] TOMI [TOMI] [link]\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\",\n      \"answer\": {\n        \"text\": \"reorg TOMI CZ Binance L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002Fcomment\u002Fen6delr\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Use the private key from block 76 for this again as a link. That private key is L2e6gPSXnq7KJBfkoD7cHGVZuhRUDARJz2Cc9JcSNLsKRZhH552F.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First three digits of MD5 hash are 5f6.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"First digit of solution only MD5 hash is 1.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"FIrst digit of TOMI only MD5 hash is 0.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbnj8ew\u002F7_mbtc_quizchain2_block_3\u002F\"\n    }\n  ]\n}","quizchain2\u002F2","quizchain2\u002F4",3,10,{"id":465,"title":415,"body":466,"description":514,"extension":518,"meta":519,"navigation":421,"path":520,"seo":521,"stem":394,"__hash__":522},"stories\u002Fquizchain2\u002F3.md",{"type":467,"value":468,"toc":513},"minimark",[469,474,478,481,485,496,504,510],[470,471,473],"h2",{"id":472},"a-dirty-word-safe-for-work","A dirty word, safe for work",[475,476,477],"p",{},"Block 3 went up 18 minutes after block 2, back at 7 mBTC. The question: \"dirty word with XA\". The post promises \"No, not that kind of dirty word, this is safe for work.\" The link is the first run's block 76 key again.",[475,479,480],{},"So what's XA? Atbash. Flip the alphabet, A becomes Z, X becomes C. XA is CZ, as in CZ of Binance.",[470,482,484],{"id":483},"reorg","Reorg",[475,486,487,488,491,492,495],{},"Binance had just been hacked, and there was talk of a Bitcoin chain reorg to undo it. CZ later apologized for even using that \"dirty word\". So the solution is ",[489,490,483],"code",{}," and the TOMI field is ",[489,493,494],{},"CZ Binance",".",[475,497,498,499,503],{},"u\u002FPr0m3th3on solved it. Their first puzzle ever. The claim confirmed at ",[500,501,502],"strong",{},"02:12:14 UTC",", and the comment says the claiming part took longer than the solving: their wallet was at home and they were on a work laptop. \"VICTORY IS MINE.\" Fair.",[475,505,506,507,495],{},"The author's verdict? Without the Atbash twist it would have been too obvious. And for a harder version, the TOMI field could have been ",[489,508,509],{},"Atbash CZ",[475,511,512],{},"Nobody printed the block 3 key in this thread. It shows up in the next one, because block 4's answer hides inside it.",{"title":514,"searchDepth":413,"depth":413,"links":515},"",[516,517],{"id":472,"depth":413,"text":473},{"id":483,"depth":413,"text":484},"md",{},"\u002Fquizchain2\u002F3",{"description":514},"l3Gd94UW21wxlUR6qB4Aco8EKMhuEktC5jkVXMtRfrw",1790876849657]