Evidence row 37944

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.cpgknowledgegraph.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": "2026-10-05T05:20:19.834425Z",
        "status": "active",
        "statusChangedAt": "2026-10-05T05:20:19.834425Z",
        "updatedAt": "2026-10-05T05:20:19.834425Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "_meta": {
        "io.modelcontextprotocol.registry/publisher-provided": {
          "agent_card": "https://mcp.cpgknowledgegraph.ai/.well-known/agent-card.json",
          "also_at": "https://mcp.a2a-grocery.ai/mcp",
          "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. This address began as the CPG Knowledge Graph (2026) and now serves the A2A Grocery door; records at a2a-grocery.ai, passports at a2a-passport.ai.",
          "documentation": "https://a2a-grocery.ai/docs",
          "health": "https://mcp.cpgknowledgegraph.ai/health.json",
          "keyring": "https://a2a-grocery.ai/.well-known/jwks.json",
          "note": "This address began as the CPG Knowledge Graph (2026) and now serves the A2A Grocery door; records at a2a-grocery.ai, passports at a2a-passport.ai.",
          "one_liner": "A2A Grocery — the agentic commerce hub for retail grocery, at its original address",
          "publisher": "GreenCore Solutions Corp.",
          "publisher_url": "https://gsc-em.com",
          "registry_entry_of_record": "io.github.greencore-solutions/a2a-grocery",
          "setup": "https://a2a-grocery.ai/setup",
          "support": "https://a2a-grocery.ai/support",
          "title": "A2A Grocery — the agentic hub for retail grocery procurement",
          "tool_names": [
            "resolve_jurisdiction",
            "resolve_actor",
            "gate_transaction",
            "search_cleared_items",
            "get_item",
            "verify_gtin",
            "get_label_and_claims",
            "compare_items",
            "find_verified_buyer",
            "find_verified_supplier",
            "get_product_documents",
            "log_audit",
            "get_price",
            "get_availability",
            "create_order_intent",
            "a2a_handoff",
            "get_market_status",
            "get_notification_requirements",
            "get_enforcement_watch"
          ],
          "tools": 19,
          "transport": "streamable-http"
        }
      },
      "description": "A2A Grocery — the agentic commerce hub for retail grocery, at its original address",
      "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/cpg-knowledge-graph",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.cpgknowledgegraph.ai/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/greencore-solutions/a2a-grocery"
      },
      "title": "A2A Grocery — the agentic hub for retail grocery procurement",
      "version": "1.3.0",
      "websiteUrl": "https://a2a-grocery.ai"
    }
  },
  "source": "mcp_registry",
  "summary": "A2A Grocery — the agentic commerce hub for retail grocery, at its original address"
}

What the leaf hashes

{"body":"a46111a50b595bcbae6e24a1112a70a81b07ddb8a5b24c82fa4b6f795754c0a7","id":37944,"kind":"listing","method":"baseline/1","observed_us":1793025391288906,"prev":null,"subject":"mcp_registry:io.github.greencore-solutions/cpg-knowledge-graph","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. 0x33b9c2112ebef987747afce3c537b7720f0a273d269157bb01c77943d184488e
2. 0x9ea665c9532c0e8e326d1050b01d8958ef481be786644db2c468b7fd89235cfc
3. 0x162c9c69f1b8d7690ebb6fe616219d1069684388d2de9cbf3421c5620b5adf23
4. 0x2fef38aa115c594eb293f178fb1e06467a6155a6bb10793def8f19556daab861
5. 0x25c2660ff2d389051b93c02c7fa2e1a618871cea8ab623836aaae9a824471392
6. 0x2dc15ca1a6cccc43c0e4d2635146da32eefe716c4be1513b2883939ac3a01a75
7. 0xdf469d3d9497bf087dbfd6efab3533e56fb65c76b866c169f5c968218f8a8e93
8. 0x7deb41dfce0d27827758358783e793ea22e15a1cc7b6c30730a7aebedf17f929
9. 0xdc523b9e61ffd244a497361cd5402a75eaf83c7e318d79293ad63bd6bc9f06a6
10. 0xcc3de2228ca9f90722824aeb1f6740dce363ec54f1223a4bfc96d012376efbc0
11. 0x25f1494b636c5e3c47bd014c16b8f4b5df5a8fb62efdc32979420416a8736679
12. 0xe57be1a98d96d75db9e9d2122794eabebfd735dea66e9d16ca63347243b3d483
13. 0x08de74b7fb265ddb83e4c673da8a94e5f71829b2e6e7464c71c5138e450f2217
14. 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae