{
  "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": 12309,
  "head": {
    "seq": 12309,
    "ts": "2026-09-12T02:44:05.366Z",
    "status": "applied",
    "chainlink_prev": "18d411da0a2b8c7fc84903051a44769fc7bb12ec15643284017de29877960ddb",
    "chainlink_row": "d429a1dc150ef63e1e2812232c6d9ed65fd16cd6a59b969b60cd839bdea34ca7"
  },
  "window": {
    "from": 12290,
    "to": 12309,
    "checked": 20,
    "continuity_ok": true,
    "breaks": []
  },
  "rows": [
    {
      "seq": 12290,
      "ts": "2026-09-11T21:59:05.110Z",
      "status": "applied",
      "chainlink_prev": "ac6cc94f2a8ceaa354cead3972044c392657946c9e1be82b7eeba2cfb87bb7ef",
      "chainlink_row": "bc5434ac791bcd208c3522a036564e60f187fcd1e540923e4877c0c663dd6720"
    },
    {
      "seq": 12291,
      "ts": "2026-09-11T22:14:04.319Z",
      "status": "applied",
      "chainlink_prev": "bc5434ac791bcd208c3522a036564e60f187fcd1e540923e4877c0c663dd6720",
      "chainlink_row": "e9df668330edefc9f26f13eb5735a0d82abd69aab0158f771b83bf570912b96b"
    },
    {
      "seq": 12292,
      "ts": "2026-09-11T22:29:03.972Z",
      "status": "applied",
      "chainlink_prev": "e9df668330edefc9f26f13eb5735a0d82abd69aab0158f771b83bf570912b96b",
      "chainlink_row": "c544649a07738c43940bc72855b0903f410802e8b2774f682fe0b5759b6239ee"
    },
    {
      "seq": 12293,
      "ts": "2026-09-11T22:44:04.449Z",
      "status": "applied",
      "chainlink_prev": "c544649a07738c43940bc72855b0903f410802e8b2774f682fe0b5759b6239ee",
      "chainlink_row": "1aa8789f61b3f170b0447a21e8fe86d5b6f176985ba8025b1ef54f22cae24ac2"
    },
    {
      "seq": 12294,
      "ts": "2026-09-11T22:59:04.614Z",
      "status": "applied",
      "chainlink_prev": "1aa8789f61b3f170b0447a21e8fe86d5b6f176985ba8025b1ef54f22cae24ac2",
      "chainlink_row": "14eeff82a663dea62cb4e4f54434f9e30f0c55e1da4239da74f5e2a90f891b16"
    },
    {
      "seq": 12295,
      "ts": "2026-09-11T23:14:04.279Z",
      "status": "applied",
      "chainlink_prev": "14eeff82a663dea62cb4e4f54434f9e30f0c55e1da4239da74f5e2a90f891b16",
      "chainlink_row": "3ecf297d1cbcb757ab5b5619f5938531c6f792223017fcf1f04c6b3ce14ee0f1"
    },
    {
      "seq": 12296,
      "ts": "2026-09-11T23:29:04.562Z",
      "status": "applied",
      "chainlink_prev": "3ecf297d1cbcb757ab5b5619f5938531c6f792223017fcf1f04c6b3ce14ee0f1",
      "chainlink_row": "339517b4b0e010b00e21bbf6e4ca77ce3b644d8ffa5b3741e044ad43d5d8df49"
    },
    {
      "seq": 12297,
      "ts": "2026-09-11T23:44:04.978Z",
      "status": "applied",
      "chainlink_prev": "339517b4b0e010b00e21bbf6e4ca77ce3b644d8ffa5b3741e044ad43d5d8df49",
      "chainlink_row": "bf721f6ba74c3c687fbc8c6e8980810c2160f092ee9e68e1e091601e418b91e4"
    },
    {
      "seq": 12298,
      "ts": "2026-09-11T23:59:05.054Z",
      "status": "applied",
      "chainlink_prev": "bf721f6ba74c3c687fbc8c6e8980810c2160f092ee9e68e1e091601e418b91e4",
      "chainlink_row": "7ce858b51b2ee0841f560588d5c854c6e0233b77093a88a46e74dd2dd293c8e2"
    },
    {
      "seq": 12299,
      "ts": "2026-09-12T00:14:03.895Z",
      "status": "applied",
      "chainlink_prev": "7ce858b51b2ee0841f560588d5c854c6e0233b77093a88a46e74dd2dd293c8e2",
      "chainlink_row": "53e263fa53e19880b0e7c2ad1d3b2f4b35c34fb3bf09c494cd71cb877baf6588"
    },
    {
      "seq": 12300,
      "ts": "2026-09-12T00:29:04.318Z",
      "status": "applied",
      "chainlink_prev": "53e263fa53e19880b0e7c2ad1d3b2f4b35c34fb3bf09c494cd71cb877baf6588",
      "chainlink_row": "b111fdb3c856bf624cf678a19ca632399b10ee40c0b6b3aaec824bf605afa08f"
    },
    {
      "seq": 12301,
      "ts": "2026-09-12T00:44:05.644Z",
      "status": "applied",
      "chainlink_prev": "b111fdb3c856bf624cf678a19ca632399b10ee40c0b6b3aaec824bf605afa08f",
      "chainlink_row": "164428986e90427162266038ca868fb4c9579d33dd47819f9ff1773fedb51f8c"
    },
    {
      "seq": 12302,
      "ts": "2026-09-12T00:59:04.404Z",
      "status": "applied",
      "chainlink_prev": "164428986e90427162266038ca868fb4c9579d33dd47819f9ff1773fedb51f8c",
      "chainlink_row": "788f4d57084a4611e5d076b3651a73d327d7a864d9deedb098921f714f59fa57"
    },
    {
      "seq": 12303,
      "ts": "2026-09-12T01:14:03.596Z",
      "status": "applied",
      "chainlink_prev": "788f4d57084a4611e5d076b3651a73d327d7a864d9deedb098921f714f59fa57",
      "chainlink_row": "91b267ff53bf1962f4551044f32c8e161633c3619f6c8bd0d8618508619277f0"
    },
    {
      "seq": 12304,
      "ts": "2026-09-12T01:29:04.193Z",
      "status": "applied",
      "chainlink_prev": "91b267ff53bf1962f4551044f32c8e161633c3619f6c8bd0d8618508619277f0",
      "chainlink_row": "dd2c33ea843d7e080c541b8ad31b9df896e7d0480ceae59a9612987772717eb7"
    },
    {
      "seq": 12305,
      "ts": "2026-09-12T01:44:04.129Z",
      "status": "applied",
      "chainlink_prev": "dd2c33ea843d7e080c541b8ad31b9df896e7d0480ceae59a9612987772717eb7",
      "chainlink_row": "d10c56cda0e010303943ec50eed1dfcc441f32d8155d7b44a2d25e6a637875ab"
    },
    {
      "seq": 12306,
      "ts": "2026-09-12T01:59:04.097Z",
      "status": "applied",
      "chainlink_prev": "d10c56cda0e010303943ec50eed1dfcc441f32d8155d7b44a2d25e6a637875ab",
      "chainlink_row": "3febea7f89e6e3e248aa8f07c5001a9758f22b4a346ce082f7427ec9112e2386"
    },
    {
      "seq": 12307,
      "ts": "2026-09-12T02:14:04.013Z",
      "status": "applied",
      "chainlink_prev": "3febea7f89e6e3e248aa8f07c5001a9758f22b4a346ce082f7427ec9112e2386",
      "chainlink_row": "d920c94cfc29751421e68d3acc267ce6fa6dc380177221ff776622290069b6e0"
    },
    {
      "seq": 12308,
      "ts": "2026-09-12T02:29:04.406Z",
      "status": "applied",
      "chainlink_prev": "d920c94cfc29751421e68d3acc267ce6fa6dc380177221ff776622290069b6e0",
      "chainlink_row": "18d411da0a2b8c7fc84903051a44769fc7bb12ec15643284017de29877960ddb"
    },
    {
      "seq": 12309,
      "ts": "2026-09-12T02:44:05.366Z",
      "status": "applied",
      "chainlink_prev": "18d411da0a2b8c7fc84903051a44769fc7bb12ec15643284017de29877960ddb",
      "chainlink_row": "d429a1dc150ef63e1e2812232c6d9ed65fd16cd6a59b969b60cd839bdea34ca7"
    }
  ],
  "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"
}