{"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":"9e3f435a-5194-4838-a9c7-dd18c225b744","kind":"skill:research-report","nodes":[{"acceptedSubmissionHash":"11080cdad5a34cf4625d817a461fe42ec9a6be1708139a495c2b8b24963ef1cf","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":"9e3f435a-5194-4838-a9c7-dd18c225b744","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":"51882","feedbackHash":"5c1589143a099c03589c83ab5293b0dc860cfc81e07f37f30a21d623f86eff61","nodeKey":"research_report","submissionHash":"11080cdad5a34cf4625d817a461fe42ec9a6be1708139a495c2b8b24963ef1cf","tag1":"verification:structural","tag2":"acceptance-v2","value":1}],"site":null,"snapshotHash":"f2dd810eebae51809deed197e501567d7b1d62f7a7c2c4933f0ef5c0117c29c9","state":"completed","submissions":[{"artifacts":[{"bytes":7359,"hash":"96364158d85267033840c34a0fe8ef3166c700ef3e9584c0b1e101fe709cd522","mediaType":"text/markdown","name":"report","path":"artifacts/report.md"}],"attempt":1,"bundleHash":"b0ecafbfe16b6ab8090f0a3a18463584414b6d70e4e4da72961a3218086fcba9","device":"5c1e4764d4e20ef5","findings":[],"hash":"11080cdad5a34cf4625d817a461fe42ec9a6be1708139a495c2b8b24963ef1cf","nodeId":"d92356ef-3f1d-4d1d-91d9-5a888ddc9774","outcome":"completed","summary":"Done. A real 48-bit SHA-256 collision, found locally and cross-verified.\n\n**Result**\n\n| | |\n|---|---|\n| `inputA` | `0x000000000017211c` |\n| `inputB` | `0x00000000014060cc` |\n| `sha256(A)` | `4e84dca19fa6`·`99674e41dc0ff0f92046577a96fd3bbc22ae6a036986dc268301` |\n| `sha256(B)` | `4e84dca19fa6`·`7ad46fd0f73243c0081834a4767ce3fc91b0b4dade47ab574d2e` |\n| shared first 48 bits | `4e84dca19fa6` |\n| hashes evaluated | 20,996,301 = 1.252·2²⁴ (theory: 1.2533·2²⁴ — within 0.11%) |\n\n**Deliverables** (both untracked, as required)\n- `collision.json` — 90 bytes, exactly the four specified keys, `lambda` as a JSON number\n- `artifacts/report.md` — facts / inferences / uncertainty / open questions separated, each fact tied to a captured command output\n\n**Source** (committed, `df791a8`): `src/collide.py` (search), `src/verify.py` (independent checker), `README.md`, `.gitignore`. Python stdlib only — no compiler existed in this environment (`gcc`/`clang`/`make`/`cargo`/`go` all absent), no third-party packages, no network needed at verification time, no submodules.\n\n**Checks run**\n- Three independent SHA-256 implementations agree bit-for-bit on both full digests: Python `hashlib`, the `openssl dgst` CLI (OpenSSL 3.0.13), Node.js `crypto`.\n- Full digests differ — truncated collision only, not a SHA-256 break.\n- Determinism: a from-scratch re-run produced a byte-identical file (`cmp` clean).\n- The verifier is not vacuous: it rejects identical inputs, a non-colliding pair, `algo:\"md5\"`, and an extra JSON key (exit 1 each), and handles the UTF-8 input form.\n\n**The one load-bearing assumption**, flagged in the report: inputs use the `0x…` hex form the task permits, so SIMD must hex-decode them to 8 raw bytes rather than hash the literal ASCII string. If its recomputation hashes the literal text instead, the check fails — hex is listed first in the task's own format spec, and no single pair can satisfy both readings.","treeHash":"7387bcbeea5d18e80eff3de821959900bc491040","usage":{"cachedInputTokens":466553,"inputTokens":30,"model":"claude-opus-5","outputTokens":15599,"runtime":"claude","turns":15,"wallClockMs":272889}}],"verification":[{"checks":[],"detail":"paths and tree verified; no suite was run for this kind of work","evaluation":"structural","profile":"none","status":"accepted","submissionHash":"11080cdad5a34cf4625d817a461fe42ec9a6be1708139a495c2b8b24963ef1cf","verifiedTreeHash":"7387bcbeea5d18e80eff3de821959900bc491040","verifierVersion":"0.1.0+41305fb5"}]}