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recipe)\nentropy: 057e2b3773eafe634f5b769161e920cb from https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F (MD5 of one space, TOMI and two words)\nstarted: 2019-05-19 12:52:01\nsolved: 2019-05-21 11:21:51 (1d 22h 29m)\ntransactions: 2\n\tfunding\t2019-05-19 12:52:01\t0.007 BTC\t95f7f474d73310fc53748a17c20abc03e592ac557dc96f438c550a37fc0be23e\n\tclaim\t2019-05-21 11:21:51\t0.00668294 BTC\ta06ea1010916a65effb31875a50405be93a567021cda21059af3d41cfcae9734\nclaim: https:\u002F\u002Fblockstream.info\u002Ftx\u002Fa06ea1010916a65effb31875a50405be93a567021cda21059af3d41cfcae9734\nhints: 5\n\tofficial\t-\tThis will be a simple block similar to block 11 of the first round with a very simple solution. It will be so simple and obvious that I don't even need a question for the block.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\tanswer: Starting from nothing, the two alternatives are one space and one line break. For this block I chose the first alternative, with \"one space\" as the TOMI field.\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\n\tofficial\t-\tFormat: [solution] TOMI [TOMI]\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\tanswer: Got it. There is one space for solution and one space before TOMI.\tanswer source: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002Fcomment\u002Feobz5fy\u002F\n\tofficial\t-\tFIrst three digits of MD5 hash are 057.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\n\tofficial\t-\tMD5 hash of solution only is 7.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\n\tofficial\t-\tMD 5 hash of TOMI field only is 1.\tsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\nexplorer: https:\u002F\u002Fblockstream.info\u002Faddress\u002F14wH4M6Ej19LM5h6BxAQMVdD1ba86SPSsv\nsource: https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F","11",false,true,[419,422,425],{"label":420,"value":421,"mono":417},"WIF","KyjAP9JR7pn5Bz98cqyp3PZNpdnw2nGzotA2enpTrT5trNQ5GoEF",{"label":423,"value":424,"mono":417},"entropy hash","057e2b3773eafe634f5b769161e920cb",{"label":426,"value":427,"mono":416,"href":412},"entropy source","MD5 of one space, TOMI and two words",[429,433],{"type":430,"txid":431,"date":403,"amount":401,"url":432},"funding","95f7f474d73310fc53748a17c20abc03e592ac557dc96f438c550a37fc0be23e","https:\u002F\u002Fblockstream.info\u002Ftx\u002F95f7f474d73310fc53748a17c20abc03e592ac557dc96f438c550a37fc0be23e",{"type":434,"txid":435,"date":404,"amount":436,"url":437},"claim","a06ea1010916a65effb31875a50405be93a567021cda21059af3d41cfcae9734","0.00668294 BTC","https:\u002F\u002Fblockstream.info\u002Ftx\u002Fa06ea1010916a65effb31875a50405be93a567021cda21059af3d41cfcae9734",[],[],[441,446,451,453,455],{"kind":442,"text":443,"source":412,"answer":444,"shared":416},"official","This will be a simple block similar to block 11 of the first round with a very simple solution. It will be so simple and obvious that I don't even need a question for the block.",{"text":445,"source":412},"Starting from nothing, the two alternatives are one space and one line break. For this block I chose the first alternative, with \"one space\" as the TOMI field.",{"kind":442,"text":447,"source":412,"answer":448,"shared":416},"Format: [solution] TOMI [TOMI]",{"text":449,"source":450},"Got it. There is one space for solution and one space before TOMI.","https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002Fcomment\u002Feobz5fy\u002F",{"kind":442,"text":452,"source":412,"shared":416},"FIrst three digits of MD5 hash are 057.",{"kind":442,"text":454,"source":412,"shared":416},"MD5 hash of solution only is 7.",{"kind":442,"text":456,"source":412,"shared":416},"MD 5 hash of TOMI field only is 1.","{\n  \"id\": \"quizchain2\u002F11\",\n  \"chain\": \"bitcoin\",\n  \"address\": {\n    \"value\": \"14wH4M6Ej19LM5h6BxAQMVdD1ba86SPSsv\",\n    \"kind\": \"p2pkh\",\n    \"hash160\": \"2b2c3e5b1ce846ed38f87a54ded489be1d60b03a\"\n  },\n  \"status\": \"solved\",\n  \"pubkey\": {\n    \"value\": \"02455a7f030dfb2770ffdda9db09d2a0a0041594bd418d8f0b164e97fb24d02cdc\",\n    \"format\": \"compressed\"\n  },\n  \"key\": {\n    \"wif\": {\n      \"decrypted\": \"KyjAP9JR7pn5Bz98cqyp3PZNpdnw2nGzotA2enpTrT5trNQ5GoEF\"\n    },\n    \"seed\": {\n      \"entropy\": {\n        \"hash\": \"057e2b3773eafe634f5b769161e920cb\",\n        \"source\": {\n          \"url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\",\n          \"description\": \"MD5 of one space, TOMI and two words\"\n        }\n      }\n    },\n    \"derived\": true\n  },\n  \"prize\": 0.007,\n  \"start_date\": \"2019-05-19 12:52:01\",\n  \"solve_date\": \"2019-05-21 11:21:51\",\n  \"solve_time\": 167390,\n  \"source_url\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"95f7f474d73310fc53748a17c20abc03e592ac557dc96f438c550a37fc0be23e\",\n      \"date\": \"2019-05-19 12:52:01\",\n      \"amount\": 0.007\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"a06ea1010916a65effb31875a50405be93a567021cda21059af3d41cfcae9734\",\n      \"date\": \"2019-05-21 11:21:51\",\n      \"amount\": 0.00668294\n    }\n  ],\n  \"hints\": [\n    {\n      \"kind\": \"official\",\n      \"text\": \"This will be a simple block similar to block 11 of the first round with a very simple solution. It will be so simple and obvious that I don't even need a question for the block.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\",\n      \"answer\": {\n        \"text\": \"Starting from nothing, the two alternatives are one space and one line break. For this block I chose the first alternative, with \\\"one space\\\" as the TOMI field.\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"Format: [solution] TOMI [TOMI]\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\",\n      \"answer\": {\n        \"text\": \"Got it. There is one space for solution and one space before TOMI.\",\n        \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002Fcomment\u002Feobz5fy\u002F\"\n      }\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"FIrst three digits of MD5 hash are 057.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"MD5 hash of solution only is 7.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\"\n    },\n    {\n      \"kind\": \"official\",\n      \"text\": \"MD 5 hash of TOMI field only is 1.\",\n      \"source\": \"https:\u002F\u002Fwww.reddit.com\u002Fr\u002Fbitcoinpuzzles\u002Fcomments\u002Fbqqiot\u002F7_mbtc_quizchain2_block_11\u002F\"\n    }\n  ]\n}","quizchain2\u002F10","quizchain2\u002F12",11,20,{"id":463,"title":415,"body":464,"description":542,"extension":547,"meta":548,"navigation":417,"path":549,"seo":550,"stem":394,"__hash__":551},"stories\u002Fquizchain2\u002F11.md",{"type":465,"value":466,"toc":541},"minimark",[467,472,476,496,499,503,515,522,529,533],[468,469,471],"h2",{"id":470},"no-question-at-all","No question at all",[473,474,475],"p",{},"May 20, 2019. The author promises a block \"so simple and obvious that I don't even need a question\". Block 11 of the first run did the same trick, so there's a hint in the number itself.",[473,477,478,479,483,484,487,488,491,492,495],{},"What you get is a format, ",[480,481,482],"code",{},"[solution] TOMI [TOMI]",", and the first digits of three MD5 hashes: ",[480,485,486],{},"057"," for the whole string, ",[480,489,490],{},"7"," for the solution, ",[480,493,494],{},"1"," for the TOMI field. That's it. No question, no link.",[473,497,498],{},"u\u002FQuantris put it well: \"IMHO no block with a TOMI could really be considered straightforward\". The guesses piled up anyway. \"a very simple solution\", \"block 11\", \"geico TOMI caveman\". Nothing.",[468,500,502],{"id":501},"close-to-nothing","Close to nothing",[473,504,505,506,510,511,514],{},"The claim confirmed at ",[507,508,509],"strong",{},"11:21:51 UTC"," on May 21, and nobody said a word. The author's update explains it. Start from nothing, and the two smallest things you can type are one space and one line break. The solution was one space. The TOMI field was ",[480,512,513],{},"one space",".",[473,516,517,518,521],{},"So the string starts with two spaces. One is the solution, one comes before TOMI. u\u002FBrainForceOne hashed ",[480,519,520],{}," TOMI one space"," first, missed, and then got it. Feels almost rude, doesn't it?",[473,523,524,525,528],{},"The hint that never came was ",[480,526,527],{},"4444",". The author explained it later: 4 for 44, divide by 4. Block 44 of the first run had a blank solution, and this one was \"close to blank\".",[468,530,532],{"id":531},"bots-or-people","Bots or people?",[473,534,535,536,514],{},"The silent winner made the author wonder whether an outside bot had grabbed the 7 mBTC. u\u002FQuantris didn't buy it: MD5 into Ian Coleman's tool is enough protection on its own. One way to find out, the author said. That test became ",[537,538,540],"a",{"href":539},"\u002Fcollections\u002Fquizchain2\u002F15","block 15",{"title":542,"searchDepth":413,"depth":413,"links":543},"",[544,545,546],{"id":470,"depth":413,"text":471},{"id":501,"depth":413,"text":502},{"id":531,"depth":413,"text":532},"md",{},"\u002Fquizchain2\u002F11",{"description":542},"fYe5ePngRjC0-Mh-TBwpslrD9wipLX6uUdct8p_sGbs",1790891451465]