{"assessments":[],"deployments":[],"fuzz":[],"identity":{"adapter":"0xde152afb7db5373f34876e1499fbd893a82dd336","chainId":1,"collection":"0x0000ec93127baa929e58e97dd0095a2bfb38ec1d","registry":"0x8004a169fb4a3325136eb29fa0ceb6d2e539a432"},"interpretation":"Records acceptance and evidence. Neither completion nor an AI assessment establishes correctness, safety, or independent review.","jobId":"6545430a-55d1-430d-b3a4-9d94b6194d52","kind":"skill:research-report","nodes":[{"acceptedSubmissionHash":"8e48677fc04629c0bd4179e662c7236719a7df782ef5c0399fddf051aa9bfdcf","dependsOn":[],"execution":{"network":true,"profile":"none","requires":["network"],"skillHash":"3ddca93330036359dd721585e58e67820336a0398b7927b3c89369d6134f30f6","skillId":"research-report","tools":[]},"key":"research_report","kind":"code","role":"implement","skillHash":"3ddca93330036359dd721585e58e67820336a0398b7927b3c89369d6134f30f6","skillId":"research-report","state":"accepted"}],"objective":"[SIMD-COLLISION:sha256:24]\nFind a collision for sha256 truncated to the first 48 bits (λ=24).\nReturn a JSON file named collision.json with exactly:\n{\"algo\":\"sha256\",\"lambda\":24,\"inputA\":\"<hex 0x... or utf8>\",\"inputB\":\"<hex 0x... or utf8>\"}\nRules:\n- inputA and inputB must be distinct\n- digest(sha256, inputA) and digest(sha256, inputB), truncated to 48 bits MSB, must be identical\n- Do not invent a false collision; verification is recomputed by SIMD\nBirthday cost is about 2^24 evaluations.","parentJobId":null,"planHash":"86625dc03c637a82308203516e25acf6912160ac4f045e34c15268626b6b5048","previousHash":"0000000000000000000000000000000000000000000000000000000000000000","projectId":"6545430a-55d1-430d-b3a4-9d94b6194d52","publication":{"commit":null,"deliveredAt":null,"repoUrl":null},"receiptIdentity":{"adapter":"0xde152afb7db5373f34876e1499fbd893a82dd336","chainId":1,"collection":"0x0000ec93127baa929e58e97dd0095a2bfb38ec1d","registry":"0x8004a169fb4a3325136eb29fa0ceb6d2e539a432"},"registry":"0xb6d0a187b050fa5bb0b87033a203f37becf4a775","research":[],"schema":"identitymd-work-v1","signals":[{"agentId":"52114","feedbackHash":"e14ecdfa28338dea3f8cfeb3d1f674f679b6f03c5f7c0feef0cf25ccb579d9dd","nodeKey":"research_report","submissionHash":"8e48677fc04629c0bd4179e662c7236719a7df782ef5c0399fddf051aa9bfdcf","tag1":"verification:structural","tag2":"acceptance-v2","value":1}],"site":null,"snapshotHash":"8d963b1043ed559f8cabd0223d48e6dba981b87df54ed66a5a379168c94d501c","state":"completed","submissions":[{"artifacts":[{"bytes":2300,"hash":"8b04f5e80bef7ab0bf356d3823de3904e07c29e9097d0703e6408ad340c99a20","mediaType":"text/markdown","name":"report","path":"artifacts/report.md"}],"attempt":1,"bundleHash":"f5552accfffbea96ae02a0721d03fa757b5f0381762208ab4b6a2cd5d956106e","device":"918f8261a6fd589c","findings":[],"hash":"8e48677fc04629c0bd4179e662c7236719a7df782ef5c0399fddf051aa9bfdcf","nodeId":"8a0b2a1f-9d86-47a1-9544-f92e8e32884c","outcome":"completed","summary":"I found a collision: the two inputs below are distinct and their SHA-256 digests share the same first 48 bits.\n\n```json\n{\"algo\":\"sha256\",\"lambda\":24,\"inputA\":\"simd-2ed1119e4b80\",\"inputB\":\"simd-0170dc5eabd6\"}\n```\n\n| Input (UTF-8, no trailing newline) | SHA-256 |\n|---|---|\n| `simd-2ed1119e4b80` | `1470dfedd885` `f6fda595…e59a5d` |\n| `simd-0170dc5eabd6` | `1470dfedd885` `72fe74fa…b2a868` |\n\nI checked the digests with both Python `hashlib` and `sha256sum`; the SIMD verifier itself was not available here, so its acceptance is not confirmed.\n\n- **Input format:** I submitted the inputs as UTF-8 strings, assuming the verifier hashes strings that don't start with `0x` as raw bytes. The report lists the equivalent `0x…` hex forms in case it requires hex.\n- **Search:** a memoryless cycle-finding birthday search, standard-library Python only, about 54.7 million hash evaluations in 22 seconds. It is deterministic, so rerunning `tools/find_collision.py` reproduces the same pair.\n- **Commit:** `collision.json`, the search script and `README.md` are committed as `04779fc`. The repository had no git identity configured, so I used your name and email for that one commit without changing any config.\n- **Report:** `artifacts/report.md` is written and left untracked as required.","treeHash":"391d745d877daa656e283b2ee291e27b941ba009","usage":{"cachedInputTokens":122698,"inputTokens":10,"model":"claude-fable-5-1","outputTokens":4933,"runtime":"claude","turns":5,"wallClockMs":73406}}],"verification":[{"checks":[],"detail":"paths and tree verified; no suite was run for this kind of work","evaluation":"structural","profile":"none","status":"accepted","submissionHash":"8e48677fc04629c0bd4179e662c7236719a7df782ef5c0399fddf051aa9bfdcf","verifiedTreeHash":"391d745d877daa656e283b2ee291e27b941ba009","verifierVersion":"0.1.0+41305fb5"}]}