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There is no way back to the author.",[368],{"name":354,"url":332},[],"{\n  \"id\": \"teikhos\u002F4\",\n  \"chain\": \"ethereum\",\n  \"address\": {\n    \"value\": \"0x735ba26f91e1275fa4b504649b19ef74739fe7e7\",\n    \"kind\": \"standard\"\n  },\n  \"status\": \"solved\",\n  \"prize\": 0.5,\n  \"start_date\": \"2018-03-14 03:11:51\",\n  \"solve_date\": \"2026-06-21 09:51:23\",\n  \"solve_time\": 261038372,\n  \"source_url\": \"https:\u002F\u002Fetherscan.io\u002Faddress\u002F0x735ba26f91e1275fa4b504649b19ef74739fe7e7#code\",\n  \"transactions\": [\n    {\n      \"tx_type\": \"funding\",\n      \"txid\": \"0x9d2172e87c445fa160c46db96bd326b4bcecce2b1574659074e094811893b4d5\",\n      \"date\": \"2018-03-14 03:11:51\",\n      \"amount\": 0.5\n    },\n    {\n      \"tx_type\": \"claim\",\n      \"txid\": \"0x4d2bfceb311bda8d265debab1c8ad23cb860922b876eca523327d0405ab97bff\",\n      \"date\": \"2026-06-21 09:51:23\",\n      \"amount\": 0.5\n    }\n  ],\n  \"solver\": {\n    \"key\": \"floflo777\",\n    \"kind\": \"person\",\n    \"name\": \"floflo777\",\n    \"addresses\": [\n      \"0x83e4b2a5a464bdfcd83057ac08447f533a595156\"\n    ],\n    \"facts\": [\n      {\n        \"text\": \"Solved a TeikhosBounty contract deployed in 2018, which pays 0.5 ETH to whoever submits the right public key.\",\n        \"source\": \"https:\u002F\u002Fx.com\u002F0xFlorent_\u002Fstatus\u002F2068735759889145906\",\n        \"date\": \"2026-06-21\"\n      },\n      {\n        \"text\": \"Found the key in the calldata of a reverted authenticate() call another address sent on 2022-04-03, then committed and authenticated through Flashbots so nobody could copy the commit.\",\n        \"source\": \"https:\u002F\u002Fgithub.com\u002Ffloflo777\u002Fopen-crypto-puzzles\u002Ftree\u002Fmain\u002F2-mid-prizes\u002Fteikhos-bipedaljoe-solver-bounties-2eth\",\n        \"date\": \"2026-08-16\"\n      }\n    ]\n  },\n  \"stages\": [\n    {\n      \"name\": \"commit\",\n      \"about\": \"Store a signature by your own address over the message the public key signed, before you submit the key. The earliest commit that holds wins.\",\n      \"artifacts\": [\n        {\n          \"name\": \"verified contract source\",\n          \"url\": \"https:\u002F\u002Fetherscan.io\u002Faddress\u002F0x735ba26f91e1275fa4b504649b19ef74739fe7e7#code\"\n        }\n      ]\n    },\n    {\n      \"name\": \"authenticate\",\n      \"about\": \"Submit the public key whose Keccak-512 unmasks the stored proof into a signature by that key. Unlike teikhos\u002F3, the same call reveals your commit and reverts unless it holds, then starts a seven day wait.\",\n      \"artifacts\": [\n        {\n          \"name\": \"verified contract source\",\n          \"url\": \"https:\u002F\u002Fetherscan.io\u002Faddress\u002F0x735ba26f91e1275fa4b504649b19ef74739fe7e7#code\"\n        }\n      ],\n      \"answer\": {\n        \"text\": \"ca6a98ceec61e213d9a0a8fdc0a6d5d9ed7566f5f4cfd24871fb9316feb6e1eb2367489f54a0cd4111f4c5356eb744d299a7521296786223c70947c8c36940c6\",\n        \"source\": \"https:\u002F\u002Fgithub.com\u002Ffloflo777\u002Fopen-crypto-puzzles\u002Ftree\u002Fmain\u002F2-mid-prizes\u002Fteikhos-bipedaljoe-solver-bounties-2eth\",\n        \"date\": \"2026-08-16\"\n      }\n    },\n    {\n      \"name\": \"reward\",\n      \"about\": \"After the seven days anyone can call it, and the contract self-destructs to the winner. There is no way back to the author.\",\n      \"artifacts\": [\n        {\n          \"name\": \"verified contract source\",\n          \"url\": \"https:\u002F\u002Fetherscan.io\u002Faddress\u002F0x735ba26f91e1275fa4b504649b19ef74739fe7e7#code\"\n        }\n      ]\n    }\n  ]\n}","teikhos\u002F3",5,1790424380387]