Evidence row 418279

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://crosscheckapi.com/v1/accept-lite"
    ]
  ],
  "name": "crosscheckapi.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453",
      "eip155:84532"
    ],
    "category": "",
    "description": "",
    "domain": "crosscheckapi.com",
    "endpoints": [
      {
        "description": "Verify output another AI agent hands back, by code alone, for $0.005: no model call, answers in about a second. Recomputes the deliverable's written sums, totals, percentages, dates, weekdays, time spans, unit conversions, and list counts; checks lengths the task asks for; flags placeholders and prompt injection; measures words, items, and JSON shape. Signed receipt, tier lite. For every requirement judged, use accept ($0.03).",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "Q3 spend came to $8,450 in total ($4,200 on ads, $2,850 on tools, and $1,900 on contractors).",
            "group": "body",
            "name": "deliverable",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "Summarize Q3 spend by category in under 50 words.",
            "group": "body",
            "name": "task",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "Verify deliverable, code only",
        "tags": [
          "verify-output",
          "acceptance-test",
          "quality-check",
          "escrow",
          "agent-to-agent"
        ],
        "url": "https://crosscheckapi.com/v1/accept-lite"
      }
    ],
    "enriched": false,
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790220967/bazaar-icons/4124578678809cf3.png",
    "id": "crosscheckapi-com",
    "integrationType": "",
    "isNew": false,
    "name": "crosscheckapi.com",
    "networks": [
      "Base",
      "eip155:84532"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.005",
      "currency": "USDC",
      "maxAmount": "0.005",
      "minAmount": "0.005"
    },
    "provider": "crosscheckapi.com",
    "providerUrl": "",
    "serviceName": "Verify deliverable, code only",
    "tags": [
      "verify-output",
      "acceptance-test",
      "quality-check",
      "escrow",
      "agent-to-agent"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"3a7720a7202c40e04485616da429c1bf8b65db81583763e0368ef2ea6a9f58ff","id":418279,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793081070593640,"prev":408066,"subject":"agentic_market:crosscheckapi-com","subject_kind":"source_record"}

Proof

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

1. 0x1067bf8ec68a58dc40271f96948a726b78af1dd11572b2383997cd9795fa0873
2. 0x7e73162755f071b33904716b113e78002e490065ac9fb6fdfd027e5476c0e91e
3. 0x444316e4aaacf497955c2ab20765eb0a9a8b16119d203aa3d2743bcc5d1bdcaf
4. 0x5be8c282488183dc87e3cd1bf09368a808fd8db5a328d504e7c8b83a5566dad1
5. 0x9405a328cf601501a99d3013e1afeb890550d0283409a16e9b23ef5b6af4819e
6. 0x4f397d9febb8cd6e40c76e7a90d56d4a732336f61d68009ca02c8c42875b5abc
7. 0xb47eba3f910d69f0c3aaaf34ca121a810c26d998ade7d25a1d083b58a59e6b5f
8. 0x7e70fa0f80f976380a14e5fa64f448886c5c12ee6cdcfc70f4ca23a183753192
9. 0x48b8a98af2dacd02a1897519c35b6f31be96c79d0c61e68dda0559bb3b213110
10. 0x9c7266801e87e4661955130191f6962c2123c07a8a6152d1bdbb1b4d9e6ad118
11. 0x1f45fb42c8950b8677f8b081328341df05c76a2daefeed7f5101116aeb98bd62
12. 0x0d3ea2b5e8eb21cf4cb25a0567ff70340d50d07631267f35ddfc7cd1de74eea5
13. 0xedf6ab3c3733ce137d888d3e5f7006ba77ab04b8f1fe576519f7b056959665ee
14. 0x52c5141da0cbee106a30396ee7d1360fd22f55084aca2ca436c8007892775670
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4