Evidence row 578056

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "The Electronic Compliance Object of one market (49): regulator, exchanges and listings page, regulated-information store, disclosure deadlines, ad hoc regime, filing format, ISIN prefix, LEI, calendar, languages, halts page — each field with its source page, signed (kid allooloo-eco-2026-10) — and the node status.",
      "inputSchema": {
        "properties": {
          "market": {
            "description": "two-letter market code (fr, uk, us, de, jp, …)",
            "type": "string"
          }
        },
        "required": [
          "market"
        ],
        "type": "object"
      },
      "name": "get_eco"
    },
    {
      "description": "The ACM-68000 signal for a listed security in its home market: ACM-200 TRADING (on the register), ACM-404 NOT ON THE REGISTER, ACM-451 READ THE FILING (a regulatory filing in the last three days, named), ACM-300 CONDITIONAL (a bare ticker names more than one issuer: add the exchange), ACM-000 NOT APPLICABLE (a GTIN: ask gtinfetch.ai), ACM-500 SYSTEM ERROR (the home node did not answer). ACM-403 HALTED is advisory: the nodes carry no halt flag yet, so the answer links the market's halts page. Each signal has its page at https://acm-<code>.ai/.",
      "inputSchema": {
        "properties": {
          "identifier": {
            "description": "ISIN (best), ticker with exchange (TSX:SHOP, SHEL.L), LEI or CMR key.",
            "type": "string"
          }
        },
        "required": [
          "identifier"
        ],
        "type": "object"
      },
      "name": "get_signal"
    },
    {
      "description": "Every market node on the roster (nodes.json, region on each), which are live, their regional doors and Agent Cards.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_nodes"
    },
    {
      "description": "Find a listed company by ticker, ISIN or LEI: the apex names the owning node and forwards to that node's regional door for the record summary.",
      "inputSchema": {
        "properties": {
          "identifier": {
            "description": "Ticker with or without exchange (SHOP, TSX:SHOP, SHEL.L, BHP.AX, D05.SI, NESN.SW, SAP.DE, 7203.T, 005930.KS), ISIN, LEI, an exact legal name or a sourced alias.",
            "type": "string"
          }
        },
        "required": [
          "identifier"
        ],
        "type": "object"
      },
      "name": "resolve_issuer"
    }
  ]
}

What the leaf hashes

{"body":"e8219065ac5eed64a7a3b1bd7504791143207da6f1e9883d007aab357ac381b6","id":578056,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793142842485762,"prev":null,"subject":"c7cf9cec-892e-424c-9975-4764b20e16f1","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x8c6d1bdef8c6aaae882b413ed33375daf1772906686c8f42a6de8d6b918a1bc6
2. 0x47b95049da4a75d238a78c0d6d76f4684bca38eb1438e2e72b8ad92252a54404
3. 0xb8e8467217c8650517b7b6cd2680c770eeba202292b054997754fcf2c2e914b1
4. 0xc3ac3b0c01324f4abccb84ca5242bbfbb8c485178e50eff76227677c61d26c3e
5. 0x30a2596f311f8027d08de307a347b20e057ae598c61f9c948500a8300801b86c
6. 0x093a824e274f904f301bbb0d4ada1e5410d1f45dfc667ed5bc73dc7c7654bfe6
7. 0x1816eb25377d6cb007d10b13118224565eeae12a6ec131a9d326ba2222617cb9
8. 0x603ceb23b45598d8a328a3bd9df310dfc98b57d3384e05040092879188514832
9. 0x6002fa0c1cdb6bcc49dd896503da8eddb24513f00e79e2684b90f02ac2f75288
10. 0xc1331aae173809d37278896bc4139f0963b9592a61ad4921cc72c27b7161c500
11. 0x918cac431c645247ff7c6aab6fcb71f2cad5755647ddf67674f244b28dd2eecc
12. 0xe9b891332733aa3fa69ace7f82b036df13816078968e2c10034f79c2255498d0
13. 0xea3d566bf95ca7a3a7f6de9c4f77180bd8c5ffd160486a27d870e8a2fb6d0b9e
14. 0x06e3b43165f5b3c31d850bc32f20b2e25b844564c4e042c141b9748c26a5a600
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4