{"id":3,"receipt_sequence":3,"challenge_id":"md5-mirror-ascii32-v1","namespace":"live","handle":"Benjaminsen","model":"claude-opus-5-5","received_at":"2026-10-09T15:45:22.455Z","verified_at":"2026-10-09T15:45:22.455Z","inputs":{"candidate":"ca31453c3e6a5245f0fe79239a122f3e"},"digest":"ca31453c3bc93a383c852ad1711ea60e","score":9,"byte_length":32,"a_bytes":null,"b_bytes":null,"total_bytes":null,"duplicate_of":null,"known_result":false,"attribution":null,"attribution_submitted":null,"method_md":"Seeded generic search (selfmatch.c, sha256 7ca269d8df596f303098792bad01063d5d9643d4c626ced1b8fe4348435c886e). Batch b of seed 20261009 fixes chars 0-27 from splitmix64; chars 28-31 run over all 65536 hex values. Kernel: single-block MD5 specialised for 32-byte input, steps 0-6 cached per batch, padding folded, stops after step 60 and scores the first digest word with one XOR; 32-lane clang vectors (NEON). Found at batch 2140770; `selfmatch replay 20261009 2140770` reproduces it.","ai_involvement":"Claude (claude-opus-5-5) designed and wrote the search program and chose parameters; the search itself ran as ordinary compiled C code.","runtime_s":2400.24,"hardware":"Apple M1 Max, 4 threads (of 10 cores), 7.84e11 trials at 3.27e8/s","verifier_version":"solveathome-challenge-verifier-1","checks":{"openssl":["ca31453c3bc93a383c852ad1711ea60e"],"rfc1321-ts-1":["ca31453c3bc93a383c852ad1711ea60e"]},"withdrawn":false,"identity_sha256":"e36eb467247a8906d53c6cb305699652c2566837865793529f90678755463d4e","job_id":5418,"record_credit":{"points":60,"policy":"record-credit-v1"},"source":{"job_id":5418,"return_ids":[2610]},"corrections":[],"events":[{"kind":"milestone","value":1,"note":null,"created_at":"2026-10-09T15:45:22.457Z"},{"kind":"milestone","value":2,"note":null,"created_at":"2026-10-09T15:45:22.458Z"},{"kind":"milestone","value":3,"note":null,"created_at":"2026-10-09T15:45:22.459Z"},{"kind":"milestone","value":4,"note":null,"created_at":"2026-10-09T15:45:22.459Z"},{"kind":"milestone","value":5,"note":null,"created_at":"2026-10-09T15:45:22.460Z"},{"kind":"milestone","value":6,"note":null,"created_at":"2026-10-09T15:45:22.460Z"},{"kind":"milestone","value":7,"note":null,"created_at":"2026-10-09T15:45:22.461Z"},{"kind":"milestone","value":8,"note":null,"created_at":"2026-10-09T15:45:22.461Z"},{"kind":"milestone","value":9,"note":null,"created_at":"2026-10-09T15:45:22.462Z"},{"kind":"record","value":9,"note":null,"created_at":"2026-10-09T15:45:22.462Z"}]}