{
  "v": 1,
  "kind": "merkle_clock_genesis",
  "what": "First public Merkle-clock slot. Leaves are SHA-256 of Ed25519 receipt signatures, not payloads, not patient data. The root is what was submitted to OpenTimestamps calendars. A signature proves this key signed these bytes; inclusion in this slot is the clock.",
  "not": [
    "Not a chain product.",
    "Not a citizen-vs-state receipt.",
    "This genesis slot uses a dedicated artefact key published below; production receipts verify against /.well-known/http-message-signatures-directory."
  ],
  "leaf_algo": "sha256(ed25519_sig)",
  "tree_algo": "rfc6962-sha256",
  "sample_receipt": "eyJhbGciOiJFZERTQSIsImtpZCI6Ik1RakJJSmJKd2ZJZm1MOW10SUNoUk5VUXVjTU9odkJOdFB5U25VQWZjRVUiLCJ0eXAiOiJvaG0tcmVjZWlwdCtqd3MifQ.eyJhZG1pdCI6ImFsbG93IiwiaWF0IjoxNzg3Nzk5NTE5LCJraW5kIjoiY2FjaGVfaGl0IiwibW9kZWwiOiJtb2NrIiwicGlwZV91c2QiOjAuMDAwMSwicGxhbmUiOiJweXRob24iLCJyZWdpb24iOiJjbG9jayIsInJlcXVlc3Rfc2hhMjU2IjoiMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMCIsInJsX2Vwb2NoIjoiMjAyNjA4MjciLCJ0ZW5hbnRfc2hhMjU2IjoiMjg3OWMyNDE2M2M4ZWFlMSIsInRva2Vuc19yZXBsYXllZCI6MSwidiI6MX0.0ZUo7m9OOx1Wg5vf1agtDz9dHztDqV7IhO8rWqFVCFkwUTl_8P8QI630VGx5HJvhvsxyscO8K9nlP9WY8uiICg",
  "sample_index": 0,
  "sample_proof": [
    {
      "side": "R",
      "hash": "8ce771984be79ae260c231b679b04d6b9e7c67743eed4778002001059e14d525"
    },
    {
      "side": "R",
      "hash": "cd00e0f3efbc5b1ced6bb2b1649dd2984f6919cbd1c68bd778558100c18b4eeb"
    },
    {
      "side": "R",
      "hash": "238671031aeebf5af21a779289576a5fa6b43c5ea430c2565a86c02b9c33c18c"
    }
  ],
  "jwk": {
    "kty": "OKP",
    "crv": "Ed25519",
    "x": "TZjbO2qmqX4LV1IfdZkagZi_DGeT5gCWwNENmTjgjgI"
  },
  "slot": {
    "v": 1,
    "kind": "merkle_clock_slot",
    "slot": "20260827T02Z",
    "slot_start_unix": 1787796000,
    "slot_end_unix": 1787799600,
    "leaf_count": 8,
    "root_sha256": "f8ce0d45bcf9a34b02e7110797a5f5dc0f2c55a280d610f7bc5463f191e5085d",
    "leaf_algo": "sha256(ed25519_sig)",
    "tree_algo": "rfc6962-sha256",
    "sealed_at": 1787799527,
    "status": "committed",
    "commitment": {
      "method": "opentimestamps",
      "digest_sha256": "f8ce0d45bcf9a34b02e7110797a5f5dc0f2c55a280d610f7bc5463f191e5085d",
      "status": "bitcoin_tx",
      "note": "OpenTimestamps calendar alice aggregated this root into Bitcoin tx 7849891a92b8c31b8c68057db3386016a189bc6fcf035c39a3cde8f9ffbfb66f (block 964237). The OP_RETURN is the calendar aggregate, not the slot root. ots verify completes after the calendar releases the Merkle path (typically 6 confirmations). This is not a chain product.",
      "attestations": [
        {
          "calendar": "https://alice.btc.calendar.opentimestamps.org",
          "http_status": 200,
          "ots_b64": "AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC/ieLohOiSlAEI+M4NRbz5o0sC5xEHl6X13A8sVaKA1hD3vFRj8ZHlCF3wCA5cmXIOyR5OCPAgY6JIr7BZzQqIIlUFyJ/t+AaZT3kK6+KkRCcXwOh9ZLMI8BBnLxGXdHDhGOstr/nYw7sgCPAg3OpJwl9cBWv4m5ZiEh5duUtwrU6Ii4gh1VP19wQ6R58I8SADim8GCNFZoKCLUgSa0QIxdydpgbv4X/eUArsGOCZQPgjxBGqPprvwCPdd7hURmoqaAIPf4w0u+QyOLi1odHRwczovL2FsaWNlLmJ0Yy5jYWxlbmRhci5vcGVudGltZXN0YW1wcy5vcmc=",
          "calendar_raw_b64": "8AgOXJlyDskeTgjwIGOiSK+wWc0KiCJVBcif7fgGmU95CuvipEQnF8DofWSzCPAQZy8Rl3Rw4RjrLa/52MO7IAjwINzqScJfXAVr+JuWYhIeXblLcK1OiIuIIdVT9fcEOkefCPEgA4pvBgjRWaCgi1IEmtECMXcnaYG7+F/3lAK7BjgmUD4I8QRqj6a78Aj3Xe4VEZqKmgCD3+MNLvkMji4taHR0cHM6Ly9hbGljZS5idGMuY2FsZW5kYXIub3BlbnRpbWVzdGFtcHMub3Jn",
          "bytes": 272
        },
        {
          "calendar": "https://bob.btc.calendar.opentimestamps.org",
          "http_status": 200,
          "ots_b64": "AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC/ieLohOiSlAEI+M4NRbz5o0sC5xEHl6X13A8sVaKA1hD3vFRj8ZHlCF3wCJyUTWlWC6YTCPAQ2+jG9gGP0iRC+xd4ATYMCAjwILcc8yYWS8I7X/Hmf9238BK8nMcz+RkhoehS664e7Ml/CPEgMmkW4wzADpjrk1R8d4R6OPcJ85hiNmG+JkbrGiwJq+4I8CB/EeLkkz8WpVIuiz2+/SirOBLsqt3K33ctYQCOu9YUkAjxBGqPprzwCOSr55uOgVBjAIPf4w0u+QyOLCtodHRwczovL2JvYi5idGMuY2FsZW5kYXIub3BlbnRpbWVzdGFtcHMub3Jn",
          "calendar_raw_b64": "8AiclE1pVgumEwjwENvoxvYBj9IkQvsXeAE2DAgI8CC3HPMmFkvCO1/x5n/dt/ASvJzHM/kZIaHoUuuuHuzJfwjxIDJpFuMMwA6Y65NUfHeEejj3CfOYYjZhviZG6xosCavuCPAgfxHi5JM/FqVSLos9vv0oqzgS7Krdyt93LWEAjrvWFJAI8QRqj6a88Ajkq+ebjoFQYwCD3+MNLvkMjiwraHR0cHM6Ly9ib2IuYnRjLmNhbGVuZGFyLm9wZW50aW1lc3RhbXBzLm9yZw==",
          "bytes": 270
        },
        {
          "calendar": "https://finney.calendar.eternitywall.com",
          "http_status": 200,
          "ots_b64": "AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC/ieLohOiSlAEI+M4NRbz5o0sC5xEHl6X13A8sVaKA1hD3vFRj8ZHlCF3wEJzR9g6AffkdVVLBangbcE4I8SC090ZyTViXgvz6xfQWjy4To6PcvOT8aez7ksHU6IOx9AjwIPfs3pbFGjPQouue08xcj7CyvYcxl2lkYX0wXbpjSOU7CPAgDqgFh3cQptOvhDd42z6FZVrH67yS0gG3DkYZ3LqNLmwI8QRqj6a+8Aiaa3/5U+t8DACD3+MNLvkMjikoaHR0cHM6Ly9maW5uZXkuY2FsZW5kYXIuZXRlcm5pdHl3YWxsLmNvbQ==",
          "calendar_raw_b64": "8BCc0fYOgH35HVVSwWp4G3BOCPEgtPdGck1Yl4L8+sX0Fo8uE6Oj3Lzk/Gns+5LB1OiDsfQI8CD37N6WxRoz0KLrntPMXI+wsr2HMZdpZGF9MF26Y0jlOwjwIA6oBYd3EKbTr4Q3eNs+hWVax+u8ktIBtw5GGdy6jS5sCPEEao+mvvAImmt/+VPrfAwAg9/jDS75DI4pKGh0dHBzOi8vZmlubmV5LmNhbGVuZGFyLmV0ZXJuaXR5d2FsbC5jb20=",
          "bytes": 256
        }
      ],
      "bitcoin": {
        "txid": "7849891a92b8c31b8c68057db3386016a189bc6fcf035c39a3cde8f9ffbfb66f",
        "explorer": "https://mempool.space/tx/7849891a92b8c31b8c68057db3386016a189bc6fcf035c39a3cde8f9ffbfb66f",
        "confirmed": true,
        "note": "OpenTimestamps calendar aggregated this slot root into a Bitcoin OP_RETURN. `ots verify` completes after the calendar releases the Merkle path (typically 6 confirmations). The transaction itself is already publicly inspectable.",
        "block_height": 964237,
        "block_hash": "000000000000000000010f5b76f2f32c6d05b416a613288321aee1cb173300b8",
        "block_time": 1787801201,
        "op_return": "c40b503edd77a79f3fb1f35744193f69bc996e6e413f5f8aca551aad57d40635",
        "op_returns": [
          "c40b503edd77a79f3fb1f35744193f69bc996e6e413f5f8aca551aad57d40635"
        ],
        "confirmations": 1,
        "tip_height": 964237
      }
    },
    "leaves": [
      "193ddf731ed7bc1d33d0ebf587fb298e4013cf4f5437b2f902a3d3a0ebc451d5",
      "11191da838b95959bb428bd8eb4363becd26f91be8d9f2830c6a87c640efbfa7",
      "220c68532923301067a182c7f59531275575c9b8a5eb1440139b53bfea3f0aa7",
      "e1029de7edac769d6d7b0a82a600611c8a2a3a2c18cd2687ed45f7b06c585fcc",
      "f36fbe408de2e8ff32d61f8173734acaae1eb7e8a103e0f9fda6746e76d7c1da",
      "4a9ad8e4048db89eb82301c135857f643670e9c49cbd380584838239aff5421f",
      "3186b1f1c5a322d864fcd5b06fbec9cd0ebec430aae46afc085f146512e4c6cc",
      "60519a4a9833ad71629629dc4f019d2aeb5547898a0dd2b290b5b92f79dcc82c"
    ]
  },
  "verify": "python scripts/verify_clock.py --genesis site/public/clock/genesis.json"
}