Evidence row 37939

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.a2a-grocery.ai/mcp"
    ],
    [
      "web",
      "https://a2a-grocery.ai/"
    ]
  ],
  "name": "A2A Grocery — the agentic hub for retail grocery procurement",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-03T15:33:31.212039Z",
        "status": "active",
        "statusChangedAt": "2026-10-03T15:33:31.212039Z",
        "updatedAt": "2026-10-03T15:33:31.212039Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "_meta": {
        "io.modelcontextprotocol.registry/publisher-provided": {
          "agent_card": "https://a2a-grocery.ai/.well-known/agent-card.json",
          "contact": "mcp@a2a-grocery.ai",
          "description": "Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for retail grocery. Business to business: makers, brand owners, private label, distributors, importers, retailers and their AI agents. Twenty markets on the SCHEMA algo grocery record; ambient, chilled, frozen and fresh; organic, free-from, plant-based, artisan, origin and premium lanes. Call resolve_jurisdiction, then resolve_actor, then gate_transaction before any availability, price, documents, order or handoff tool; those tools refuse without an allow decision. Every record field carries its source page; every response carries notice; every record carries claim_status (listed · claimed · verified). Artificial intelligence makes mistakes. A2A Grocery is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.",
          "documentation": "https://a2a-grocery.ai/docs",
          "health": "https://mcp.a2a-grocery.ai/health.json",
          "line_two": "Powered by SCHEMA algo for grocery agentic commerce",
          "notice": "Artificial intelligence makes mistakes. A2A Grocery is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.",
          "privacy": "https://a2a-grocery.ai/privacy",
          "publisher": "GreenCore Solutions Corp.",
          "publisher_url": "https://a2a-grocery.ai/legal",
          "schema": "https://a2a-grocery.ai/schema-algo.json",
          "security": "https://a2a-grocery.ai/security",
          "setup": "https://a2a-grocery.ai/setup",
          "standard": "https://a2a-schema.org/",
          "support": "https://a2a-grocery.ai/support",
          "terms": "https://a2a-grocery.ai/terms",
          "title": "A2A Grocery — the agentic hub for retail grocery procurement",
          "tools": 19,
          "transport": "streamable-http"
        }
      },
      "description": "A2A + MCP hub for retail grocery procurement — 20 markets on the SCHEMA algo record. Trade only.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://a2a-grocery.ai/icon.svg",
          "theme": "light"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://a2a-grocery.ai/icon-512.png",
          "theme": "light"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://a2a-grocery.ai/icon-512-dark.png",
          "theme": "dark"
        }
      ],
      "name": "io.github.greencore-solutions/a2a-grocery",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.a2a-grocery.ai/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/greencore-solutions/a2a-grocery"
      },
      "title": "A2A Grocery — the agentic hub for retail grocery procurement",
      "version": "1.0.3",
      "websiteUrl": "https://a2a-grocery.ai"
    }
  },
  "source": "mcp_registry",
  "summary": "A2A + MCP hub for retail grocery procurement — 20 markets on the SCHEMA algo record. Trade only."
}

What the leaf hashes

{"body":"c7ac4d8cab066bcb3299c777e023b98b06afe1bb25b3f82479263b9250639873","id":37939,"kind":"listing","method":"baseline/1","observed_us":1793025391283226,"prev":null,"subject":"mcp_registry:io.github.greencore-solutions/a2a-grocery","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x42b3ec0c212d09b2c1b1f244f13d5eff5a6b9bd4215529fb67384738896b0802
2. 0x9e51abd11e904d9ceb23b48afbf849347ab3acc6e379b2a5344c2b1cd95164a2
3. 0xdef41ba277b17b4ec68caf94045919e93ba9d2f9b429ec1407f50993ee85dc38
4. 0xed3d7b48fcd59b01e25eae16528e56820f2c49efe80cc2718f3dd9660c481607
5. 0xd7ddd0b80d2f096266ad6355c0a66261c70a29cc3f09a92e9dff3dac2941612a
6. 0x19a5de0c9eb1f6b9c1b9838311765ab1ebd40493625114f05f860e5c1c65e8d8
7. 0xb2cb2730ad1f3210db66a535b81d81643fd2e4f299b13704543f38ff7248028f
8. 0x9703b8c12c4bab59edbddf2afc18c17914158e21c1647999d2ae8c5289f6749e
9. 0x75cc7f5a9e041e691a712d48afcdb3411bc10d2105c8f6d3612b5f722af18590
10. 0xc268ff3f1dd69d7c668cdb05ded405db6f682a95f21c57e98e683c14e6e2ff89
11. 0x5209b44231d259fd8508722a1ae64f1b73c7b7f19b456b1ecd950d5b281c35b6
12. 0x58f4330f9ac32da273a2a76d85bc0768d037638cddbd3d1f09d9b64094bfd942
13. 0xd406739acce2ba016f8d49081b15f266a4ea4a0b0fc5ef171c89c8fd2dda4d80
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae