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Evidence row 52248

Observed , by baseline/1.

Kind
listing
About
source_record mcp_registry:io.github.simul813/kdp-niche-research
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
5e5bebcdaa5a5dee4d2e61bb199490185c60e6401f67597e8ed97d96d4a5538d
Leaf
0xb14cdd67cb98ca67da98aff17805dd3c8756f6ad14d8c2abda449339b4f824f4

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://nichedata.dev/mcp"
    ],
    [
      "web",
      "https://nichedata.dev/"
    ]
  ],
  "name": "KDP Niche Research",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-05-02T22:01:58.969368Z",
        "status": "active",
        "statusChangedAt": "2026-05-02T22:01:58.969368Z",
        "updatedAt": "2026-05-02T22:01:58.969368Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Kindle niche intelligence (demand/competition/BSR/revenue) gated by x402 USDC on Base.",
      "name": "io.github.simul813/kdp-niche-research",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://nichedata.dev/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/simul813/kdp-intelligence-api"
      },
      "title": "KDP Niche Research",
      "version": "0.2.0",
      "websiteUrl": "https://nichedata.dev"
    }
  },
  "source": "mcp_registry",
  "summary": "Kindle niche intelligence (demand/competition/BSR/revenue) gated by x402 USDC on Base."
}

What the leaf hashes

{"body":"5e5bebcdaa5a5dee4d2e61bb199490185c60e6401f67597e8ed97d96d4a5538d","id":52248,"kind":"listing","method":"baseline/1","observed_us":1793025419719101,"prev":null,"subject":"mcp_registry:io.github.simul813/kdp-niche-research","subject_kind":"source_record"}

Proof

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

  1. 0xb14cc16a7432eaa4b61a65b972b61cfaaa28a626e84a3e3c8081ffc07ed80746
  2. 0x4388e0ba2df56ec73ba3ed7cbd939f1cd896af661474776cff775ca3edfeb523
  3. 0xd0fba93fcd180ccd4d92f84ea307840aa5016adb0a0b76c5c4caca3ec3ada12b
  4. 0x23793b5af26f89c45cdf97401539832397abda373f4c89506a8864807c6e746c
  5. 0x083624b354eaf832e2852cdb8a572ae06126049a639cefdff9e7f1d7b6253c1f
  6. 0x20e048d145fe9ce63124d428e8511011152bd065148566229cb23cbaf7e951b8
  7. 0xf637b3ff4838d150b74f36f020a64be39f165e942e2f41c39538a958c3bad6d9
  8. 0xcba8ecae0d14f45b40e369eae11e9fd342d00488c0aa4731ef50b67080a98fab
  9. 0xfe760d927c146e0e56e6689bf773a2073125c3f350f60f5a25a4042ba3b1fd4e
  10. 0x55838b11251efb24add31c997e02aac1cdf6d78a790f4178057a4c2095a5d448
  11. 0x68459613b28284909eadec125bcf23808811e99ecfabc229bf7deb2178ab9826
  12. 0xce1aeb889b974291cea1fbfd01595655bd2c1b3636dc5b56eeb8904adb9f6c65
  13. 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
  14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
  15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
  16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
  17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON