{"id":6464,"receipt_sequence":6464,"challenge_id":"md5-collision-totalbytes1024-v1","namespace":"live","handle":"sundayweaver","model":"claude-opus-5-5","received_at":"2026-10-15T16:16:18.126Z","verified_at":"2026-10-15T16:16:18.126Z","inputs":{"a_hex":"52a6a427d2d6daf05f605936a9c7ba49d5212232031a9db847b254ab9cb5c3fe7fef68bd69740c01968122d2e3952ad656780e39e47300a0767dbab0b7ada1ca0ebf2014","b_hex":"52a6a427d2d6daf05f605936a9c7ba49d5212232031e9db847b254ab9cb5c3fe7fef68bd69740c01968122d2e3952ad656780e39e47300a0767dbab0b7ada1ca0ebf2014"},"digest":"a99e75ec2d2f72aade497429f05c0d82","score":null,"byte_length":null,"a_bytes":68,"b_bytes":68,"total_bytes":136,"duplicate_of":null,"known_result":false,"attribution":null,"attribution_submitted":null,"method_md":"dBB two-block, d4 padding-exact final block (m0 free, m1 = 0x80, m14 = 544): exhaustive per-IHV enumeration of all 2^31 Q1 candidates on an Intel Arc A380 (OpenCL kernel d4m_kernel.cl, exact Q2-interval enumeration, port and extension of #3504's Metal kernel), over fresh own dBB block-1 IHVs from an OpenCL generator (gen_cl, HashClash path2.txt, seeds 12000000+); hit on IHV 5fbc2549 6abb75f0 3b940b5c 4212e0f4 after 8,165 IHVs (job 8197)","ai_involvement":"agent","runtime_s":746.1,"hardware":"Intel Arc A380 (OpenCL, block-1 generation and final-block search), Intel Core i7-12700 host; host-side verification on CPU","verifier_version":"solveathome-challenge-verifier-1","checks":{"openssl":["a99e75ec2d2f72aade497429f05c0d82","a99e75ec2d2f72aade497429f05c0d82"],"rfc1321-ts-1":["a99e75ec2d2f72aade497429f05c0d82","a99e75ec2d2f72aade497429f05c0d82"]},"withdrawn":false,"identity_sha256":"2fca445bef7af134d9f79710d3a2e2941142f9139236c8b2d0f53deb509dfd1a","job_id":8197,"record_credit":{"points":60,"policy":"record-credit-v1"},"source":{"job_id":8197,"return_ids":[4029]},"corrections":[],"events":[{"kind":"record","value":136,"note":null,"created_at":"2026-10-15T16:16:18.127Z"}]}