{
  "ledger": "IronBridge LAW-25 hash-chain",
  "spec": "append-only sha256 hash-chain; chainlink_row = sha256(canonical(row)); chainlink_prev = prior row chainlink_row",
  "chain_length": 13491,
  "head": {
    "seq": 13491,
    "ts": "2026-09-24T10:14:03.789Z",
    "status": "applied",
    "chainlink_prev": "9237b9281c4b58816d2eddc9ac472a8b47124cc1d9f93b593ba66831c972417b",
    "chainlink_row": "34bbc9330eac5ccd11c0ed950c9607d1407489ea74cb5879169c50fe9807f88c"
  },
  "window": {
    "from": 13442,
    "to": 13491,
    "checked": 50,
    "continuity_ok": true,
    "breaks": []
  },
  "rows": [
    {
      "seq": 13442,
      "ts": "2026-09-23T21:59:04.968Z",
      "status": "applied",
      "chainlink_prev": "500507ff5547a5f4bc2ab477d6af80f84d8fe369317f683f6281bac79fcded58",
      "chainlink_row": "d3e1dc612caa9b2a562a51ec4a32a96b83dbd52407cd2313deb5f1abeebfa6c7"
    },
    {
      "seq": 13443,
      "ts": "2026-09-23T22:14:03.738Z",
      "status": "applied",
      "chainlink_prev": "d3e1dc612caa9b2a562a51ec4a32a96b83dbd52407cd2313deb5f1abeebfa6c7",
      "chainlink_row": "d10b0c1971687f2d2c3c728ddaf9c00002a389e0b94cdfb7d5f4cfe8bcf32f77"
    },
    {
      "seq": 13444,
      "ts": "2026-09-23T22:29:04.691Z",
      "status": "applied",
      "chainlink_prev": "d10b0c1971687f2d2c3c728ddaf9c00002a389e0b94cdfb7d5f4cfe8bcf32f77",
      "chainlink_row": "38e4138bdfcc9001bc56757a38602537d46c881290724484866d0a0d5dadd154"
    },
    {
      "seq": 13445,
      "ts": "2026-09-23T22:44:04.121Z",
      "status": "applied",
      "chainlink_prev": "38e4138bdfcc9001bc56757a38602537d46c881290724484866d0a0d5dadd154",
      "chainlink_row": "db7171066e97140de105da33164347f0ff6710a6ce9a26644f24fe94b885b693"
    },
    {
      "seq": 13446,
      "ts": "2026-09-23T22:59:04.477Z",
      "status": "applied",
      "chainlink_prev": "db7171066e97140de105da33164347f0ff6710a6ce9a26644f24fe94b885b693",
      "chainlink_row": "9ccd12c528a2f8188c00476b78573711506eec95ffbb3728fef2f7cef2ab6ba6"
    },
    {
      "seq": 13447,
      "ts": "2026-09-23T23:14:04.149Z",
      "status": "applied",
      "chainlink_prev": "9ccd12c528a2f8188c00476b78573711506eec95ffbb3728fef2f7cef2ab6ba6",
      "chainlink_row": "76088087aa04ca84b9b71f8a541468befa9e05a27329ec2c59a44858359454d4"
    },
    {
      "seq": 13448,
      "ts": "2026-09-23T23:29:04.169Z",
      "status": "applied",
      "chainlink_prev": "76088087aa04ca84b9b71f8a541468befa9e05a27329ec2c59a44858359454d4",
      "chainlink_row": "effedead05846c2d81175786de4848c2e03c304c1b9c5ddd124c7eafa1d2bbc7"
    },
    {
      "seq": 13449,
      "ts": "2026-09-23T23:44:04.725Z",
      "status": "applied",
      "chainlink_prev": "effedead05846c2d81175786de4848c2e03c304c1b9c5ddd124c7eafa1d2bbc7",
      "chainlink_row": "861609ef4700f4d439eb7ac59221692384d5b6a43b88bb0e5f6747a59d2f4fd2"
    },
    {
      "seq": 13450,
      "ts": "2026-09-23T23:59:04.065Z",
      "status": "applied",
      "chainlink_prev": "861609ef4700f4d439eb7ac59221692384d5b6a43b88bb0e5f6747a59d2f4fd2",
      "chainlink_row": "954bf182ea34deb6670bafff5be22aa1c0d1df1100b30cf2f30e7301a9aa3e27"
    },
    {
      "seq": 13451,
      "ts": "2026-09-24T00:14:04.118Z",
      "status": "applied",
      "chainlink_prev": "954bf182ea34deb6670bafff5be22aa1c0d1df1100b30cf2f30e7301a9aa3e27",
      "chainlink_row": "3011926fb672053504d0f5bee75335387afa6f42f29df56b49b97f7cb711cea7"
    },
    {
      "seq": 13452,
      "ts": "2026-09-24T00:29:03.803Z",
      "status": "applied",
      "chainlink_prev": "3011926fb672053504d0f5bee75335387afa6f42f29df56b49b97f7cb711cea7",
      "chainlink_row": "30c266795318afe1c509405ff2ee21c1e047916683fd7cc477d5f304806b96ca"
    },
    {
      "seq": 13453,
      "ts": "2026-09-24T00:44:05.382Z",
      "status": "applied",
      "chainlink_prev": "30c266795318afe1c509405ff2ee21c1e047916683fd7cc477d5f304806b96ca",
      "chainlink_row": "191d716fb18bd49450260f0c50ab81d442c8eb6cd16e780521d52b26decdf5bf"
    },
    {
      "seq": 13454,
      "ts": "2026-09-24T00:59:05.167Z",
      "status": "applied",
      "chainlink_prev": "191d716fb18bd49450260f0c50ab81d442c8eb6cd16e780521d52b26decdf5bf",
      "chainlink_row": "e7ff5e94a419828486a8523ffecf8fae90755071635d5ea1f6bb0919cc44dec1"
    },
    {
      "seq": 13455,
      "ts": "2026-09-24T01:14:03.834Z",
      "status": "applied",
      "chainlink_prev": "e7ff5e94a419828486a8523ffecf8fae90755071635d5ea1f6bb0919cc44dec1",
      "chainlink_row": "b59d9e09050bf094ad23b85ba33aa1cf968e3b80e517d97d0d127fc952bc7976"
    },
    {
      "seq": 13456,
      "ts": "2026-09-24T01:29:03.517Z",
      "status": "applied",
      "chainlink_prev": "b59d9e09050bf094ad23b85ba33aa1cf968e3b80e517d97d0d127fc952bc7976",
      "chainlink_row": "3dce1d736f86af44a4c6ac9d2ac84a6792f17f8c37919763216d560d1a6d2f2b"
    },
    {
      "seq": 13457,
      "ts": "2026-09-24T01:44:05.080Z",
      "status": "applied",
      "chainlink_prev": "3dce1d736f86af44a4c6ac9d2ac84a6792f17f8c37919763216d560d1a6d2f2b",
      "chainlink_row": "1587ba514cdb4f71fba9cb16715b17f29296f42fbbbf4a42950a9933344525b2"
    },
    {
      "seq": 13458,
      "ts": "2026-09-24T01:59:04.411Z",
      "status": "applied",
      "chainlink_prev": "1587ba514cdb4f71fba9cb16715b17f29296f42fbbbf4a42950a9933344525b2",
      "chainlink_row": "d97152b445211683ab534ba381209121cbde4ff22ac71b4fcacf8e139d1501b9"
    },
    {
      "seq": 13459,
      "ts": "2026-09-24T02:14:02.819Z",
      "status": "applied",
      "chainlink_prev": "d97152b445211683ab534ba381209121cbde4ff22ac71b4fcacf8e139d1501b9",
      "chainlink_row": "f30f90967313a9f62cc2bf9a7b7f84f420f4c2a667c600a766f998478d14e784"
    },
    {
      "seq": 13460,
      "ts": "2026-09-24T02:29:03.961Z",
      "status": "applied",
      "chainlink_prev": "f30f90967313a9f62cc2bf9a7b7f84f420f4c2a667c600a766f998478d14e784",
      "chainlink_row": "7f9a91057259d9d6781f84e588206320e5a4c2e0ad3dad396cadac8ff8392b2c"
    },
    {
      "seq": 13461,
      "ts": "2026-09-24T02:44:04.735Z",
      "status": "applied",
      "chainlink_prev": "7f9a91057259d9d6781f84e588206320e5a4c2e0ad3dad396cadac8ff8392b2c",
      "chainlink_row": "69b963589a9ecbb4c641ef2f688560e650500eeba9bf0bb42c8716eaa9093988"
    },
    {
      "seq": 13462,
      "ts": "2026-09-24T02:59:04.673Z",
      "status": "applied",
      "chainlink_prev": "69b963589a9ecbb4c641ef2f688560e650500eeba9bf0bb42c8716eaa9093988",
      "chainlink_row": "44807cd1983ad7689d0af39d33e5eb04aea163e4c7c508604b05357cbd82e172"
    },
    {
      "seq": 13463,
      "ts": "2026-09-24T03:14:03.540Z",
      "status": "applied",
      "chainlink_prev": "44807cd1983ad7689d0af39d33e5eb04aea163e4c7c508604b05357cbd82e172",
      "chainlink_row": "6571bc04401f8b04880f8a3312b08cb7cbc25e65eb901316f13e68d2582d99ea"
    },
    {
      "seq": 13464,
      "ts": "2026-09-24T03:29:03.902Z",
      "status": "applied",
      "chainlink_prev": "6571bc04401f8b04880f8a3312b08cb7cbc25e65eb901316f13e68d2582d99ea",
      "chainlink_row": "c362c99c1cefef878a60b1bf08b829f56723e335e7dd19ecd8c732807b9f979b"
    },
    {
      "seq": 13465,
      "ts": "2026-09-24T03:44:04.860Z",
      "status": "applied",
      "chainlink_prev": "c362c99c1cefef878a60b1bf08b829f56723e335e7dd19ecd8c732807b9f979b",
      "chainlink_row": "b9a2fbf4e0b76360f4a1a6926946df6e0bb0a90ab75d120d559daa3174972892"
    },
    {
      "seq": 13466,
      "ts": "2026-09-24T03:59:04.429Z",
      "status": "applied",
      "chainlink_prev": "b9a2fbf4e0b76360f4a1a6926946df6e0bb0a90ab75d120d559daa3174972892",
      "chainlink_row": "0a0de5b4ce9f0ae8083f0a746984df97270790fb6d7791fbfae5bcab1b707c7a"
    },
    {
      "seq": 13467,
      "ts": "2026-09-24T04:14:03.826Z",
      "status": "applied",
      "chainlink_prev": "0a0de5b4ce9f0ae8083f0a746984df97270790fb6d7791fbfae5bcab1b707c7a",
      "chainlink_row": "e944254b848b7b28a52878c50cfe3d553c0e9c7b66945557568c78e6d0c7a2c9"
    },
    {
      "seq": 13468,
      "ts": "2026-09-24T04:29:04.423Z",
      "status": "applied",
      "chainlink_prev": "e944254b848b7b28a52878c50cfe3d553c0e9c7b66945557568c78e6d0c7a2c9",
      "chainlink_row": "d3f21ad6abf6bf303329cc049b87514c1d2088277fb6e7b34d7789a61be259fe"
    },
    {
      "seq": 13469,
      "ts": "2026-09-24T04:44:04.641Z",
      "status": "applied",
      "chainlink_prev": "d3f21ad6abf6bf303329cc049b87514c1d2088277fb6e7b34d7789a61be259fe",
      "chainlink_row": "a5d5916548ecabee8c575a755eb95a9ae33fbd372299e4f6891c4a560e491de9"
    },
    {
      "seq": 13470,
      "ts": "2026-09-24T04:59:04.503Z",
      "status": "applied",
      "chainlink_prev": "a5d5916548ecabee8c575a755eb95a9ae33fbd372299e4f6891c4a560e491de9",
      "chainlink_row": "338de5e941186246e6e4122f155ed978d7fc33d19b2e7026e9981ae7027ddc6d"
    },
    {
      "seq": 13471,
      "ts": "2026-09-24T05:14:03.509Z",
      "status": "applied",
      "chainlink_prev": "338de5e941186246e6e4122f155ed978d7fc33d19b2e7026e9981ae7027ddc6d",
      "chainlink_row": "17a6dadf4320ed5d0e16e1e3d36219ffa9d386ee4f32a8ca56be708911bb281f"
    },
    {
      "seq": 13472,
      "ts": "2026-09-24T05:29:04.378Z",
      "status": "applied",
      "chainlink_prev": "17a6dadf4320ed5d0e16e1e3d36219ffa9d386ee4f32a8ca56be708911bb281f",
      "chainlink_row": "51bd6b7c018cdd702c2872432531a7e5f992bf3166b26be6a8e75c1b1a5039c1"
    },
    {
      "seq": 13473,
      "ts": "2026-09-24T05:44:04.988Z",
      "status": "applied",
      "chainlink_prev": "51bd6b7c018cdd702c2872432531a7e5f992bf3166b26be6a8e75c1b1a5039c1",
      "chainlink_row": "14ca945ef214025bd14fcb041aaa4923ae572d4d7ee18de9e4a6220fffbe87b5"
    },
    {
      "seq": 13474,
      "ts": "2026-09-24T05:59:04.686Z",
      "status": "applied",
      "chainlink_prev": "14ca945ef214025bd14fcb041aaa4923ae572d4d7ee18de9e4a6220fffbe87b5",
      "chainlink_row": "2bb0932312cd54a0f049c61cda66b237848c0599be26f209ad93e983a175914c"
    },
    {
      "seq": 13475,
      "ts": "2026-09-24T06:14:04.288Z",
      "status": "applied",
      "chainlink_prev": "2bb0932312cd54a0f049c61cda66b237848c0599be26f209ad93e983a175914c",
      "chainlink_row": "712ba63071085c25398b4829caf14eb4feedf665e6cb4b51d5e2ad4540df0ecb"
    },
    {
      "seq": 13476,
      "ts": "2026-09-24T06:29:04.680Z",
      "status": "applied",
      "chainlink_prev": "712ba63071085c25398b4829caf14eb4feedf665e6cb4b51d5e2ad4540df0ecb",
      "chainlink_row": "fd328eea55a5352b02f85c130ebb666c97ef32f18dab8d0941ff8420c11e130c"
    },
    {
      "seq": 13477,
      "ts": "2026-09-24T06:44:06.200Z",
      "status": "applied",
      "chainlink_prev": "fd328eea55a5352b02f85c130ebb666c97ef32f18dab8d0941ff8420c11e130c",
      "chainlink_row": "820d7581a1db2c9a3646744ab9d273286059b5014a3e197c9fa41a5f1c9aeac2"
    },
    {
      "seq": 13478,
      "ts": "2026-09-24T06:59:05.082Z",
      "status": "applied",
      "chainlink_prev": "820d7581a1db2c9a3646744ab9d273286059b5014a3e197c9fa41a5f1c9aeac2",
      "chainlink_row": "f9d30a258199ed9ea0b13a10843d7058c8b9f96716e752b06367d19da95302bb"
    },
    {
      "seq": 13479,
      "ts": "2026-09-24T07:14:03.379Z",
      "status": "applied",
      "chainlink_prev": "f9d30a258199ed9ea0b13a10843d7058c8b9f96716e752b06367d19da95302bb",
      "chainlink_row": "0f65385c81a9db5a1103ae8b73b6653e179c3fa3aa25b93afe3b49136b99895c"
    },
    {
      "seq": 13480,
      "ts": "2026-09-24T07:29:03.839Z",
      "status": "applied",
      "chainlink_prev": "0f65385c81a9db5a1103ae8b73b6653e179c3fa3aa25b93afe3b49136b99895c",
      "chainlink_row": "78d2931574e945aec510b8426e18228161d28bb4039370edbd9ea794d09e2e78"
    },
    {
      "seq": 13481,
      "ts": "2026-09-24T07:44:04.646Z",
      "status": "applied",
      "chainlink_prev": "78d2931574e945aec510b8426e18228161d28bb4039370edbd9ea794d09e2e78",
      "chainlink_row": "1f44911e340435497d57b851d76565998ccc25e2760b1b624ed1febd720a588c"
    },
    {
      "seq": 13482,
      "ts": "2026-09-24T07:59:04.406Z",
      "status": "applied",
      "chainlink_prev": "1f44911e340435497d57b851d76565998ccc25e2760b1b624ed1febd720a588c",
      "chainlink_row": "22d995b705920057f2835d49dd5d7e07e9ad61172a84efb5e969a735b2791223"
    },
    {
      "seq": 13483,
      "ts": "2026-09-24T08:14:03.522Z",
      "status": "applied",
      "chainlink_prev": "22d995b705920057f2835d49dd5d7e07e9ad61172a84efb5e969a735b2791223",
      "chainlink_row": "f2bcd55006bba29dfd0be151793c69f19b48c535e3d3a8aa02a8e5ed339863d4"
    },
    {
      "seq": 13484,
      "ts": "2026-09-24T08:29:04.540Z",
      "status": "applied",
      "chainlink_prev": "f2bcd55006bba29dfd0be151793c69f19b48c535e3d3a8aa02a8e5ed339863d4",
      "chainlink_row": "5ecfb2ae3e52a0a754ad92a7c43b05f248affd113d239385079531bc593ccef6"
    },
    {
      "seq": 13485,
      "ts": "2026-09-24T08:44:05.693Z",
      "status": "applied",
      "chainlink_prev": "5ecfb2ae3e52a0a754ad92a7c43b05f248affd113d239385079531bc593ccef6",
      "chainlink_row": "202b2af9c2b7b6484d305ec57a7f6a615782038d927d634e7e530d700bf289c2"
    },
    {
      "seq": 13486,
      "ts": "2026-09-24T08:59:03.788Z",
      "status": "applied",
      "chainlink_prev": "202b2af9c2b7b6484d305ec57a7f6a615782038d927d634e7e530d700bf289c2",
      "chainlink_row": "a904d2946d98c7168fd5465dac11c818cf90bab34116112d423476008646cec2"
    },
    {
      "seq": 13487,
      "ts": "2026-09-24T09:14:03.836Z",
      "status": "applied",
      "chainlink_prev": "a904d2946d98c7168fd5465dac11c818cf90bab34116112d423476008646cec2",
      "chainlink_row": "9ea07e3cc87cd8915c4793e0b6b6f21aaa012174fdb9085908cbdca3886d3b4f"
    },
    {
      "seq": 13488,
      "ts": "2026-09-24T09:29:04.014Z",
      "status": "applied",
      "chainlink_prev": "9ea07e3cc87cd8915c4793e0b6b6f21aaa012174fdb9085908cbdca3886d3b4f",
      "chainlink_row": "1f2ec9372b8c2637110447651abfac53e4a0e5b3bdaec1a41a021cdd8daa4419"
    },
    {
      "seq": 13489,
      "ts": "2026-09-24T09:44:05.489Z",
      "status": "applied",
      "chainlink_prev": "1f2ec9372b8c2637110447651abfac53e4a0e5b3bdaec1a41a021cdd8daa4419",
      "chainlink_row": "7762fb34adb6d5fecf73ff74dbd8201ec5800197a83102029a4e643562c309ba"
    },
    {
      "seq": 13490,
      "ts": "2026-09-24T09:59:04.421Z",
      "status": "applied",
      "chainlink_prev": "7762fb34adb6d5fecf73ff74dbd8201ec5800197a83102029a4e643562c309ba",
      "chainlink_row": "9237b9281c4b58816d2eddc9ac472a8b47124cc1d9f93b593ba66831c972417b"
    },
    {
      "seq": 13491,
      "ts": "2026-09-24T10:14:03.789Z",
      "status": "applied",
      "chainlink_prev": "9237b9281c4b58816d2eddc9ac472a8b47124cc1d9f93b593ba66831c972417b",
      "chainlink_row": "34bbc9330eac5ccd11c0ed950c9607d1407489ea74cb5879169c50fe9807f88c"
    }
  ],
  "how_to_verify": "For each row n: confirm rows[n].chainlink_prev === rows[n-1].chainlink_row. Any break = tamper. Spot-check any single row (with server-side leaf recompute) via ?row=N. Leaf contents withheld to protect internal operations; each row carries an HMAC authorship seal.",
  "authorship_seal": "HMAC (keyed) per row",
  "public_chains": 2,
  "sibling": {
    "name": "seal",
    "endpoint": "/api/chain/page"
  },
  "note": "two public chains that currently disagree; they are not the same ledger; v1 row=1 leaf_integrity is false"
}