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  "type": "SpineLinkSourceProof",
  "version": 1,
  "hashAlgorithm": "SHA-256",
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  "title": "w140101_spine",
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  "proofPath": "library/w140101_spine-2026-07-29T00-26-09-087Z/source-proof.json",
  "proofUrl": "https://spine-link.vercel.app/assets/library/w140101_spine-2026-07-29T00-26-09-087Z/source-proof.json?v=2026-07-29T00-26-09.087Z",
  "uploader": {
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    "browserEnvironmentHashSha256": "1ab4a73fb95de995e56c3403fb3484b7e2c34054d04d34a8e036a2e1a9d3e86e",
    "browserEnvironment": {
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      "platform": "Win32",
      "language": "en-US",
      "languages": [
        "en-US",
        "en"
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      "hardwareConcurrency": 16,
      "deviceMemory": 32,
      "screen": {
        "width": 1920,
        "height": 1080,
        "colorDepth": 24,
        "pixelRatio": 1
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      "timezone": "America/Los_Angeles",
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      "maxTouchPoints": 0,
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    "branch": "main",
    "previewPath": "library/w140101_spine-2026-07-29T00-26-09-087Z"
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  "blockchain": {
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    "recommendedAnchorPayload": "sha256:12a2a5c20da4565fde594b98efef060a7e25467ced0b79b4cc72fb5e3582c227",
    "note": "Anchor proofHash on-chain together with the GitHub commit/file path to timestamp the original upload evidence."
  },
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}