Evidence row 1478728

What was observed

{
  "endpoints": [
    [
      "web",
      "https://github.com/luca-network/spr"
    ]
  ],
  "name": "SPR (Sealed Payment Record)",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T05:48:03.812616Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T05:48:03.812616Z",
        "updatedAt": "2026-10-31T05:48:03.812616Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Seal every payment your AI agent makes as a signed record, on your own machine, with your key.",
      "name": "network.luca/spr-mcp",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "The agent's ID, such as agt_research",
              "format": "string",
              "isRequired": true,
              "name": "SPR_AGENT_ID"
            },
            {
              "description": "The company the agent pays for",
              "format": "string",
              "isRequired": true,
              "name": "SPR_ENTITY"
            },
            {
              "description": "The book's folder (default ./spr-books); it holds the company's private key",
              "format": "string",
              "name": "SPR_DIR"
            },
            {
              "description": "The company's time zone for accounting dates (default UTC)",
              "format": "string",
              "name": "SPR_TIME_ZONE"
            },
            {
              "description": "on, to return the nonce to sign with each x402 intent",
              "format": "string",
              "name": "SPR_BINDING"
            }
          ],
          "identifier": "@luca-network/spr-mcp",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.1.5"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/luca-network/spr"
      },
      "title": "SPR (Sealed Payment Record)",
      "version": "0.1.5",
      "websiteUrl": "https://github.com/luca-network/spr"
    }
  },
  "source": "mcp_registry",
  "summary": "Seal every payment your AI agent makes as a signed record, on your own machine, with your key."
}

What the leaf hashes

{"body":"1b6811c62d55baa6e394436a91d1c716ab955c8917c612c63d82e468be3e31ff","id":1478728,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793427350750250,"prev":null,"subject":"mcp_registry:network.luca/spr-mcp","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0x1323e74d8e444085903924bd752f6e7a034fd78ad08af40311b82024cbd5c9a4
2. 0x073bd012a01da931a51a5b322f5102e2d6e76c17bf00debd8fc2fe53e09d412f
3. 0xfc727fd37d57dacecef9b4af688b9ce6b45655dc77a84baeb5f94c02324eabf7
4. 0xe78137fa4038b8efb000cefcee3f99099dd9bf2f83594282878e231883925971
5. 0x46c5d0414f86bcf99f12df08a5697aebe9471f61d2c52b4b4e0f08f07b7577db
6. 0x30816452687a1f55f5873518a123c7911d3bb1958d57a44e90c10ddfce729957
7. 0xe76254a47f0ef7e72c412a1072fc981f120af6e4da7c796986d315afeca7c813
8. 0xe41dfbb1bc1cb88f1e310557bb214f423d21db2d49fec6c621cbf59cefb58641
9. 0x8814c09ab5e4d92c719c848fb10bf61a5cc80ec8cb0885eeff65446572ff8ca1
10. 0x93a02bc1017efcf692c62c5898c8649c66c99da2e6ffe804763ec003f61ac1db
11. 0x1079fedb4fe966296f1a428fb5e70f49f8148b6745299582c2e3d50710f3b415
12. 0x3506f733503d54d5526cec588d9e8b1f94f6fb7fc812cbfc49cabc52200335f5
13. 0xf2b49afd37f6c7a074cb7e2e9bd6248a3e1bcb90308acf1af6b3be8a3c1b7cfe
14. 0x500efd0d65e793a02397af46769412226d4deefe24ac497b68f3a32f6828638e
15. 0x95ec49fc7f2c7be30422eaa1d0d6036836dd63ff46a8ed4027258fcf3eb8cf24
16. 0x2bca4aa3c59fe9209016c64bd8b706423477e3407201a00165afde9abf6fee2b
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0