Evidence row 566945

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Paid (x402, USDC on Base). Full safety report for a Base ERC-20 token contract: metadata, raw owner address, mint-selector heuristic, approximate recent-activity signal. Call without 'tx' first to receive the exact x402 payment challenge (amount, asset, payTo address, chain); pay that amount in USDC on Base, then call again with the resulting transaction hash in 'tx' to receive the real report.",
      "inputSchema": {
        "properties": {
          "address": {
            "description": "0x-prefixed 40-hex-character Base token contract address.",
            "type": "string"
          },
          "tx": {
            "description": "Optional: 0x-prefixed 64-hex-character Base transaction hash proving payment. Omit on the first call to see the payment challenge.",
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "apecheck_report"
    },
    {
      "description": "FREE, no payment required. Checks a site's robots.txt against a list of known AI crawlers (GPTBot, ClaudeBot, Google-Extended, etc.) and reports which are allowed or blocked.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "The site URL to check (e.g. https://example.com). robots.txt is looked up at that domain's root.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "crawlercheck_check"
    },
    {
      "description": "FREE, no payment required. Checks whether a site has a valid llms.txt file (the emerging convention for telling AI crawlers/agents what a site is and how to use it): fetches it, reports status and any errors/warnings.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "The site URL to check (e.g. https://example.com). llms.txt is looked up at that domain's root.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "llmstxt_check"
    },
    {
      "description": "Paid (x402, USDC on Base). Full HTTP security-headers report for a URL: every header checked, raw values, remediation detail. Call without 'tx' first to receive the exact x402 payment challenge; pay, then call again with the transaction hash in 'tx' to receive the full report.",
      "inputSchema": {
        "properties": {
          "tx": {
            "description": "Optional: 0x-prefixed 64-hex-character Base transaction hash proving payment. Omit on the first call to see the payment challenge.",
            "type": "string"
          },
          "url": {
            "description": "The URL to check (e.g. https://example.com).",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "secheaders_report"
    }
  ]
}

What the leaf hashes

{"body":"d26b6e7855cf5a69cd495ac68cc2e458e5569b335af7ed8bfa6a83c84bbc4bf0","id":566945,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138572907330,"prev":null,"subject":"3ec5604b-b3fc-4d7e-b4f1-a6471602c0f4","subject_kind":"endpoint"}

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. 0x021d570969b8e7cc94063a64c493771833e1878ab831cc54836cfb06890d9ac7
2. 0x19f8509c68436fd563485fa8aefd7576359e9c2012e5c771cfc1cafd5ae63f48
3. 0x99a8173b1cdff3424e70b1226083b53d4e854675050e690f599eee30184e731e
4. 0xfe98f91a17bed51ee22a980d18f7c2c7cf585f6600253b6c8e5cc1e6ce8aacb7
5. 0x8406a5589e0d2456336a5319831e2153710ea6df6407663f243bfaff8fcf8765
6. 0x11dd90d0a7536576fcca3d147d1f50204d83713ee102e86acee91ce409766c57
7. 0xe16a2d4f6545409d8ac33ada57cddb2c0567cf344a3d1f36c7f6397765cef012
8. 0x9ec8648cdb0aecaddb2b1971fc7313e145bbffedf06a0ac50060ca67fd2be646
9. 0xbb29eaf5560041d473ae06716b03fa001f649cf2fc1beab5658a773c0949f23a
10. 0x88da08caae617294558df3d1e6db49762eb8b020a78e23eb786fe51cbd14c976
11. 0xca110c77af452531cd72d9dfe28e4dd3c3e60be71c9e7ac05ad2b782f9713bde
12. 0x05916cc6b98491a0d541e4ecca3d0132fa255184243406b5a8a52bb1b6b63bd0
13. 0x5b34b9f89512a83faa4bfecec322037670cc1af58e6e94a86fe88934434d7ddf
14. 0x29e12cb67839430fa64ab8bd05d52bab606f2978d9e6d2fb094fece9438fd4de
15. 0x2cf27e8a181d60d0dd27c186c2eddfcbb4e8fa71cf66feeb55a4d730e15ee8c4
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4