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  "proofUrl": "https://spine-link.vercel.app/assets/library/hearts-2026-08-04T09-38-53-174Z/source-proof.json?v=2026-08-04T09-38-53.174Z",
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      "platform": "MacIntel",
      "language": "en-US",
      "languages": [
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    "note": "Anchor proofHash on-chain together with the GitHub commit/file path to timestamp the original upload evidence."
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