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by sp332
4572 days ago
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Someone is running a competition right now. To win, you have to find a collision using various hash functions. https://bitcointalk.org/index.php?topic=293382.0 The rules of the competition are encoded in the bitcoin transaction using Script. For example: OP_2DUP OP_EQUAL OP_NOT OP_VERIFY OP_SHA1 OP_SWAP OP_SHA1 OP_EQUAL
which means SHA1(x) == SHA1(y) AND NOT (x == y) |
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