{
  "schema": "sellat-proof/2",
  "proof_id": "784c1265-6499-4fdd-8898-a3f78b73d940",
  "content": {
    "algorithm": "SHA-256",
    "hash": "6be9254616b1a440cab6d83f044988fe27f8fd103a977cf9faecb0bb94185d97"
  },
  "leaf": {
    "formula": "SHA-256('sellat-leaf:v2:' + proof_id + ':' + content.hash)",
    "value": "7ec5fb25d7eeb7906f2d4d57808def569719667534f0a521f7fc44c69a23f525"
  },
  "merkle": {
    "index": 0,
    "path": [],
    "root": "7ec5fb25d7eeb7906f2d4d57808def569719667534f0a521f7fc44c69a23f525"
  },
  "anchors": [
    {
      "chain_id": 137,
      "network": "Polygon Mainnet",
      "tx_hash": "0xdfffbf946fefe58a663e7274b277b68ce30992302e6783c6be0e4ccb5e84d603",
      "block_number": 95115191,
      "block_hash": "0xe46800495cf39ecdd45b8ca917c30fb71b7efa36e3975fe0398342900324e03e",
      "block_timestamp": "2026-10-07T12:59:37.000Z",
      "payload": "sellat:v2:7ec5fb25d7eeb7906f2d4d57808def569719667534f0a521f7fc44c69a23f525"
    }
  ],
  "attestations": [
    {
      "type": "opentimestamps",
      "state": "upgraded",
      "bitcoin_block_height": 970345,
      "target_digest": "7ec5fb25d7eeb7906f2d4d57808def569719667534f0a521f7fc44c69a23f525",
      "ots_base64": "AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC/ieLohOiSlAEIfsX7Jdfut5BvLU1XgI3vVpcZZnU08KUh9/xExpoj9SXwEBHK5RwbcDitfp0WW/6kbTUI//AIG9MnLrMv2D4I8CCtiS0bx+mlqmEY+e5lQr4VxIgYpujKkT3tI3CHGkvQMwjwEBdncN1FryyoFjmMmmBo6d8I8CA1d7hTkykpMHIZ9DPy3Hf0gojyr6moIdItAkWmM7lSIAjwIN8QLMOglaSDslZUKukYT7J/X+zzvbLmxXv1lB9J4UfMCPEEasZCNvAIXeCD//otOAj/AIPf4w0u+QyOLi1odHRwczovL2FsaWNlLmJ0Yy5jYWxlbmRhci5vcGVudGltZXN0YW1wcy5vcmcI8CDcnTtoX3ovEpD0qYN+H+cA0H4HiAjmRmSZfXPHHq11gAjwIE7bykB15oqqFCoWe27Nvwdg4F0nBwEemxmO0tUDwCWwCPAgFjSvL7rzQg6m6bCUIgN0q5J2Rj+qsULKaffDjJCGMx4I8SCRBylt+1Pq1OEdFoNzB/HGNWKFV21oF3LITVeKKS4KqwjxIIsRYWrlO8QPFGf/wGaiSOLROLzaKwU0ykZSyHJDr6SWCPEgmCFOHuiUuXMpmoIkI1RCc50slOh2B4ohR2kFXt1ea0oI8SBN2pdc57Dq/ixMiUoUC2Ng8PB6QBvIo+KnVdE9+P2YygjxIAxBSScFPk8ahUNsZUiU2e+aFv2QnSswxS26K/Dg6vadCPEgJCdtqsGcQqdaBS83OnvCNANdGJPMc2FS8UTnCgGQysgI8SDsAsoSBrD9dPGRpOV4zt2u2/BYaH0d6gzfCC03QKVZ3wjwIE7Vg8mUCXYvO1EoY49OIyCj2Sebv2aHpmLtxjkA5TKPCPEgKawYcWJXOXdtaIxxtLDp4mzq5ZPS8t5n12p8ozgA4EMI8CCeNK/ISn6gkPEPqlN+/SrpW9h+B65M5lmPf3mWGx4zewjxWQEAAAABw3o2YKF8lbW7ShT0jsFxTgNiA/p8T7SMHhsd/pOJ24MAAAAAAP7///8CxMQAAAAAAAAWABRVv9NDK7poB0N5/XxF18tIP1/Z5QAAAAAAAAAAImog8ARnzg4ACAjxIA0u2e7X+n78nu367KDSXiwPxb7S87wiE0bCu/dS8LF4CAjwILOMpLHeNnW1Hu/PaL2F/Nl0Lxaxk4uq1D0qIMVmvaqYCAjwILs3rRUzIaY/4YY0tzzupEdgh5qNrcrxHMRx9BGwxOusCAjwIDgiLcFjVnWQNxIWfAfKtBLCBd06BOtq31RIuDPMKPaMCAjxIC6AcHS6z1HOH9/k96qmsOzxTr15PextF3nh72o+d1BjCAjxIEJPvnyD1k1Qj4qYu4U+HT5p0Sws3XGvX9pyuDyBjBFfCAjxICwAzupw3fsOpo1OUOZtH4RFdHIr6Nrl0J7Y34kzfpp3CAjxIH/+eA6oZEdkhFh52uYJ9vFghaIPfTO6vwI4aenajhqUCAjxIOi2oCksYO2QX0syNlsV1ziTRbLSbBUc1U6p0xaSV9zFCAjwIEeJXBrDkSgFoqehcwlQa4ILthoio68X2Za7wBNmhb39CAjwIHdPyrcg0SzQ+WPxD17wHo8CYl4bNUj+v7LUlthDP9cRCAjxIM46ea8nvpF1QxLsneSaAZkQh2CCU9eRY1QYpPaz8RlnCAgABYiWDXPXGQED6Zw7//AIQ5Mq3fBWoDsI8CDnOzgGyo8lhf1ekwAdNBCrCBy2cC9IR4q6zQPGEISCWgjwIGtnaRx9yFW4E+dhXTXjOVSg3HnWbZ4Tb+YhOK2dfaCzCPAQsygwcyT6vH9NRLVVHSNOBwjwIASxG0kDdzFJ1Ww+t4lR9pyq3XTfbvv6v3pZAJzxH5hCCPAgWUjrlFSMu0CxVycDzYfgMpviFx1tGF/EJwGka/DYETgI8CDun3n/gioe9Z3Qk1VoZZelHHSR9s6KE7f+3eeWMO/e4wjxBGrGQjbwCGzO/6nSKo7D/wCD3+MNLvkMjiwraHR0cHM6Ly9ib2IuYnRjLmNhbGVuZGFyLm9wZW50aW1lc3RhbXBzLm9yZwjwIOCgQUjjzvzD3x2G/6+acGmB1HXwMFUgDJ5StQKnlYh3CPAgtPP7rSdpef4Oxe6tAYzq4ZPGqTJ0eIQttRoef6cxUUsI8CDjp7mG4+jbQCot7qceaD/HsoloKIfmOjg6CnJfWJt1JQjxIPBTVFapwN8+sDCK+ZfLRpawayOxDD5WCGJMgxYWzeIyCPAgN+/S8YmKLe2JRglUxvPjurnpN6zOJlXoL0GLBo5y184I8CA4ZxB0sOzHkZ6DlLtDu/iOasFLo/miNVpl+hl4aD1c+QjwIPGOouYuXZvik7PH4UiKaDXTL2Oaw7S0UoLI9u5LimZpCPAgf3LmIFzY6qlDRdIzEdZJD9tj6yhsznlI1qRCxXx/MQsI8SBv5YCOetDpy8y7I2nc0qARm3vnKsXi0U7tPWPYcRCf9wjwIPBXciAjd7jwh69PTe8dTdpjgEuaNc9TptvEPw02UComCPEgpndGpQfwZUcYOQY3b/1UUSVVR2Z/bh8sURAlyaMxPk0I8SCOpizSrsndJl2+jmVKriY5E/DzQWuyLBKULfA4czWeywjwIISlg0R4JJe7Qg9JH/H2BFFwp8DHQRzFcVizMVToqOmtCPFZAQAAAAFjoxK2Fxus+7tftTOmu6fV+WfMKReFg6m/BK5HOR+DcQAAAAAA/v///wJQ0gAAAAAAABYAFBw72RkoICPLkHWcrZsMmMlRgqLyAAAAAAAAAAAiaiDwBGrODgAICPEgOuyzX7YIkCSUP+/xbmqCqPdcGJpxo5BZFjrRMNhS46UICPAgoYvvS91B5W+oVD0rYjFaaBeU1vueKXTKfm7M9i5Z5WoICPAg6gp+hf0NIOVaql61iNUX8KHvw5jGHA6YZn/n4vXqLp8ICPEgDY7OVetLS2Rx/ZziddaV+7G3VWQ31xHhFc36qQHJnFoICPAgxKxpvrnya5ntKnQdiXitMzdBHv3Rl7ynVdpVDzu8IfQICPEgJaEfIKlm2j8dMRZVwQQ/n/DoxMDBF/ACzIY6aTvb+WoICPAgFGkgpvjc2YpRnTk7ZqnCDmRYn5qqiKTCi76yoiJPE24ICPEgMAhq+FoIgGjv2egw/Fh6vNYtuTvoPpT9UM1ztzCvTDwICPAgzwSvDmwID667NsoGp9sFJPS3D7uiHtAUQzuXSCU5BzwICPAg8qbO7XTdKPkWTuvkFIcNtekytT86ucsNlptuT1plBhcICPAgdKhvTfDJscGiBtIKT/gcourVtTNO6cSumrTZd9JpsuUICPEgJpNqdJ/eLN562lrWKL39noA1UnWMwJo4KO4EczvpMToICPAgYwQwp4/LSnvEzb+fZ2JYkZ3VAN0aI/dxGUa9RSM/ghEICAAFiJYNc9cZAQPrnDv/8BCFMDVRxHtJuVBAk0t8iyEYCPEg0aoqE0OUAge7WTm89AbgQME7oyuXmcWJJvZ5AnvekJ0I8CAnMmvYF5VbyVGkcQrP5ZPEIZVc5/qfuiSQ6S69c+tYfAjwIEnYQM1/1wiO1sDnD4Yh46vxppZhUA3drpBDOdd158qKCPEEasZCNfAI/+IAU0QeNOEAg9/jDS75DI4pKGh0dHBzOi8vZmlubmV5LmNhbGVuZGFyLmV0ZXJuaXR5d2FsbC5jb23wEB3uVhXwx08zUWHPRnC9lxsI8CBqHBDn5n8rSkm0Vrls9TZ24yDUv3SO0tb5bZEqRLF5/QjwIPcrwtYpj4FednaMORSlLi40H1aUOabJHC53/9j1GEEVCPEEasZCNvAIuKj5W0cIsdEAg9/jDS75DI4jImh0dHBzOi8vYnRjLmNhbGVuZGFyLmNhdGFsbGF4eS5jb20=",
      "note": "Standard OpenTimestamps file attesting the 32-byte digest equal to merkle.root; verify with OpenTimestamps tooling."
    },
    {
      "type": "rfc3161-qualified-timestamp",
      "state": "issued",
      "target": "content.hash",
      "target_digest": "6be9254616b1a440cab6d83f044988fe27f8fd103a977cf9faecb0bb94185d97",
      "gen_time": "2026-10-07T12:52:58.005Z",
      "serial_number": "70A76409EF13A05F6AC640AAD37A986D",
      "policy_oid": "0.4.0.2023.1.1",
      "tsa": "AUTORIDAD DE SELLADO DE TIEMPO FNMT-RCM-TSU 2025",
      "trusted_list": {
        "territory": "ES",
        "service": "Qualified timestamps issued by Autoridad de Sellado de Tiempo FNMT-RCM-TSU 2025",
        "tsu_cert_sha256": "56cab2cd977b47c14f0067d304b8554a0e31ba1d21b0f15bdf7faa819da03176"
      },
      "timestamp_response_der_base64": "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",
      "note": "RFC 3161 TimeStampResp over the SHA-256 of the file (content.hash), issued by a qualified TSA listed in the EU trusted list. Verify: openssl ts -verify -in <this>.tsr -data <file> -CAfile <trusted-list certificate> -partial_chain (the trusted list publishes the TSU certificate itself, not a CA)."
    }
  ],
  "times": {
    "sellat_received_at": "2026-10-07T12:52:56.330Z",
    "note": "block_timestamp is the independently verifiable time; sellat_received_at is SELLAT’s own record time"
  }
}