[
  {
    "name": "genesis, no subtype",
    "previous_hash": "0000000000000000000000000000000000000000000000000000000000000000",
    "organization_id": "6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01",
    "sequence_number": 1,
    "event_type": "DATA_ACCESS",
    "event_subtype": "",
    "actor_id": "u-1",
    "actor_type": "USER",
    "resource_type": "EVIDENCE",
    "resource_id": "ev-1",
    "action": "READ",
    "status": "SUCCESS",
    "details_as_submitted": "{\"b\":1,\"a\":\"x\"}",
    "timestamp_utc": "2026-10-07T18:04:05.123456Z",
    "nonce": "aa11",
    "details_as_stored": "{\"a\": \"x\", \"b\": 1}",
    "preimage": "{\"previous_hash\":\"0000000000000000000000000000000000000000000000000000000000000000\",\"organization_id\":\"6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01\",\"sequence_number\":1,\"event_type\":\"DATA_ACCESS\",\"actor_id\":\"u-1\",\"actor_type\":\"USER\",\"resource_type\":\"EVIDENCE\",\"resource_id\":\"ev-1\",\"action\":\"READ\",\"status\":\"SUCCESS\",\"details\":{\"a\":\"x\",\"b\":1},\"timestamp\":\"2026-10-07T18:04:05.123456Z\",\"nonce\":\"aa11\"}",
    "entry_hash": "19e3fdf50b07c12dbab4c0abd7fb5e867b9ca6b609c73d06d50c9104ca6becdf"
  },
  {
    "name": "subtype, key order by byte length",
    "previous_hash": "4e64bcb5c1a9b8f1d3e0a7c2b6d5e4f3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8d7",
    "organization_id": "6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01",
    "sequence_number": 2,
    "event_type": "AUDIT",
    "event_subtype": "DETERMINATION",
    "actor_id": "u-2",
    "actor_type": "USER",
    "resource_type": "CONTROL",
    "resource_id": "AC-2",
    "action": "UPDATE",
    "status": "SUCCESS",
    "details_as_submitted": "{\"zz\":1,\"aaa\":2,\"b\":3,\"cc\":4,\"a\":5,\"é\":6,\"中\":7,\"Z\":8,\"_\":9,\"\":10,\"nested\":{\"y\":[{\"b\":2,\"a\":1},3,\"s\"],\"x\":null}}",
    "timestamp_utc": "2026-10-07T18:04:05.1Z",
    "nonce": "bb22",
    "details_as_stored": "{\"\": 10, \"Z\": 8, \"_\": 9, \"a\": 5, \"b\": 3, \"cc\": 4, \"zz\": 1, \"é\": 6, \"aaa\": 2, \"中\": 7, \"nested\": {\"x\": null, \"y\": [{\"a\": 1, \"b\": 2}, 3, \"s\"]}}",
    "preimage": "{\"previous_hash\":\"4e64bcb5c1a9b8f1d3e0a7c2b6d5e4f3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8d7\",\"organization_id\":\"6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01\",\"sequence_number\":2,\"event_type\":\"AUDIT\",\"event_subtype\":\"DETERMINATION\",\"actor_id\":\"u-2\",\"actor_type\":\"USER\",\"resource_type\":\"CONTROL\",\"resource_id\":\"AC-2\",\"action\":\"UPDATE\",\"status\":\"SUCCESS\",\"details\":{\"\":10,\"Z\":8,\"_\":9,\"a\":5,\"b\":3,\"cc\":4,\"zz\":1,\"é\":6,\"aaa\":2,\"中\":7,\"nested\":{\"x\":null,\"y\":[{\"a\":1,\"b\":2},3,\"s\"]}},\"timestamp\":\"2026-10-07T18:04:05.1Z\",\"nonce\":\"bb22\"}",
    "entry_hash": "438dfa8dd9bfeaf677fdb8db29030ca9b022ae0b2267ac8c85d5532733f9dc85"
  },
  {
    "name": "strings that need escaping",
    "previous_hash": "1111111111111111111111111111111111111111111111111111111111111111",
    "organization_id": "6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01",
    "sequence_number": 3,
    "event_type": "DATA_ACCESS",
    "event_subtype": "",
    "actor_id": "u-3",
    "actor_type": "USER",
    "resource_type": "FILE",
    "resource_id": "\u003ca\u0026b\u003e",
    "action": "READ",
    "status": "SUCCESS",
    "details_as_submitted": "{\"q\":\"say \\\"hi\\\" \u003cb\u003e\u0026amp;\u003c/b\u003e\",\"ctl\":\"tab\\tline\\nbs\\\\ bell\\u0007 bksp\\b ff\\f\",\"ls\":\"a\\u2028b\\u2029c\",\"uni\":\"café 中文 😀\"}",
    "timestamp_utc": "2026-10-07T18:04:05Z",
    "nonce": "cc33",
    "details_as_stored": "{\"q\": \"say \\\"hi\\\" \u003cb\u003e\u0026amp;\u003c/b\u003e\", \"ls\": \"a\u2028b\u2029c\", \"ctl\": \"tab\\tline\\nbs\\\\ bell\\u0007 bksp\\b ff\\f\", \"uni\": \"café 中文 😀\"}",
    "preimage": "{\"previous_hash\":\"1111111111111111111111111111111111111111111111111111111111111111\",\"organization_id\":\"6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01\",\"sequence_number\":3,\"event_type\":\"DATA_ACCESS\",\"actor_id\":\"u-3\",\"actor_type\":\"USER\",\"resource_type\":\"FILE\",\"resource_id\":\"\\u003ca\\u0026b\\u003e\",\"action\":\"READ\",\"status\":\"SUCCESS\",\"details\":{\"q\":\"say \\\"hi\\\" \\u003cb\\u003e\\u0026amp;\\u003c/b\\u003e\",\"ls\":\"a\\u2028b\\u2029c\",\"ctl\":\"tab\\tline\\nbs\\\\ bell\\u0007 bksp\\b ff\\f\",\"uni\":\"café 中文 😀\"},\"timestamp\":\"2026-10-07T18:04:05Z\",\"nonce\":\"cc33\"}",
    "entry_hash": "39ec1f80ed5b4880eee886b8373d34fb8a99e85b368f113bac898ead24cff8d8"
  },
  {
    "name": "numbers",
    "previous_hash": "2222222222222222222222222222222222222222222222222222222222222222",
    "organization_id": "6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01",
    "sequence_number": 4,
    "event_type": "SYSTEM",
    "event_subtype": "",
    "actor_id": "svc",
    "actor_type": "SYSTEM",
    "resource_type": "METRIC",
    "resource_id": "m-1",
    "action": "CREATE",
    "status": "SUCCESS",
    "details_as_submitted": "{\"small\":1e-7,\"big\":1e21,\"mid\":1.5e3,\"scaled\":1.50e1,\"neg0\":-0,\"neg0f\":-0.00,\"keep\":1.50,\"bigint\":12345678901234567890,\"frac\":0.1,\"neg\":-42}",
    "timestamp_utc": "2026-10-07T18:04:05.000100Z",
    "nonce": "dd44",
    "details_as_stored": "{\"big\": 1000000000000000000000, \"mid\": 1500, \"neg\": -42, \"frac\": 0.1, \"keep\": 1.50, \"neg0\": 0, \"neg0f\": 0.00, \"small\": 0.0000001, \"bigint\": 12345678901234567890, \"scaled\": 15.0}",
    "preimage": "{\"previous_hash\":\"2222222222222222222222222222222222222222222222222222222222222222\",\"organization_id\":\"6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01\",\"sequence_number\":4,\"event_type\":\"SYSTEM\",\"actor_id\":\"svc\",\"actor_type\":\"SYSTEM\",\"resource_type\":\"METRIC\",\"resource_id\":\"m-1\",\"action\":\"CREATE\",\"status\":\"SUCCESS\",\"details\":{\"big\":1000000000000000000000,\"mid\":1500,\"neg\":-42,\"frac\":0.1,\"keep\":1.50,\"neg0\":0,\"neg0f\":0.00,\"small\":0.0000001,\"bigint\":12345678901234567890,\"scaled\":15.0},\"timestamp\":\"2026-10-07T18:04:05.0001Z\",\"nonce\":\"dd44\"}",
    "entry_hash": "1d6d11136313933e91b5697ab1b55c9b925f10dcd45c454531cbb2608133cdd5"
  },
  {
    "name": "null and empty details",
    "previous_hash": "3333333333333333333333333333333333333333333333333333333333333333",
    "organization_id": "6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01",
    "sequence_number": 5,
    "event_type": "SYSTEM",
    "event_subtype": "",
    "actor_id": "svc",
    "actor_type": "SYSTEM",
    "resource_type": "METRIC",
    "resource_id": "m-2",
    "action": "DELETE",
    "status": "FAILURE",
    "details_as_submitted": "null",
    "timestamp_utc": "2026-10-07T18:04:05.999999Z",
    "nonce": "ee55",
    "details_as_stored": "null",
    "preimage": "{\"previous_hash\":\"3333333333333333333333333333333333333333333333333333333333333333\",\"organization_id\":\"6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01\",\"sequence_number\":5,\"event_type\":\"SYSTEM\",\"actor_id\":\"svc\",\"actor_type\":\"SYSTEM\",\"resource_type\":\"METRIC\",\"resource_id\":\"m-2\",\"action\":\"DELETE\",\"status\":\"FAILURE\",\"details\":null,\"timestamp\":\"2026-10-07T18:04:05.999999Z\",\"nonce\":\"ee55\"}",
    "entry_hash": "8013405f5047075f58590348be9ca9c886537d05328a93d1eab30ea2f6074930"
  },
  {
    "name": "empty object and array",
    "previous_hash": "3333333333333333333333333333333333333333333333333333333333333333",
    "organization_id": "6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01",
    "sequence_number": 6,
    "event_type": "SYSTEM",
    "event_subtype": "",
    "actor_id": "svc",
    "actor_type": "SYSTEM",
    "resource_type": "METRIC",
    "resource_id": "m-3",
    "action": "DELETE",
    "status": "FAILURE",
    "details_as_submitted": "{\"o\":{},\"a\":[]}",
    "timestamp_utc": "2026-10-07T18:04:05.120000Z",
    "nonce": "ff66",
    "details_as_stored": "{\"a\": [], \"o\": {}}",
    "preimage": "{\"previous_hash\":\"3333333333333333333333333333333333333333333333333333333333333333\",\"organization_id\":\"6f1d2c1e-0b5a-4a39-9d0c-2f1f7c4a9e01\",\"sequence_number\":6,\"event_type\":\"SYSTEM\",\"actor_id\":\"svc\",\"actor_type\":\"SYSTEM\",\"resource_type\":\"METRIC\",\"resource_id\":\"m-3\",\"action\":\"DELETE\",\"status\":\"FAILURE\",\"details\":{\"a\":[],\"o\":{}},\"timestamp\":\"2026-10-07T18:04:05.12Z\",\"nonce\":\"ff66\"}",
    "entry_hash": "60c803ba4b687e82d2374a2b99da53e21382df0914e8af070dce727bd82c423d"
  }
]