Evidence row 522644

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Classify a face into one of 7 shapes (oval, round, square, oblong, heart, diamond, triangle) from three measured outline ratios, with a match % for every shape.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "faceIndex": {
            "description": "Face height / face width (typical 1.1–1.5)",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "foreheadRatio": {
            "description": "Forehead (temple) width / face width (typical 0.7–0.95)",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "jawRatio": {
            "description": "Jaw (bigonial) width / face width at cheekbones (typical 0.75–1.0)",
            "exclusiveMinimum": 0,
            "type": "number"
          }
        },
        "required": [
          "faceIndex",
          "jawRatio",
          "foreheadRatio"
        ],
        "type": "object"
      },
      "name": "classify_face_shape"
    },
    {
      "description": "Return the link to FaceRuler’s free on-device tool for measuring a real face from one photo (PSL score, face shape, canthal tilt or facial ratios). Use when the user wants their own face measured.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "measurement": {
            "description": "What to measure",
            "enum": [
              "psl",
              "face_shape",
              "canthal_tilt",
              "facial_ratios"
            ],
            "type": "string"
          }
        },
        "required": [
          "measurement"
        ],
        "type": "object"
      },
      "name": "get_face_measurement_tool"
    },
    {
      "description": "Define a looksmaxxing / PSL term (e.g. LTN, HTN, Chadlite, canthal tilt, hunter eyes, mog) and link to its full explanation.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "term": {
            "description": "The term to look up",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "term"
        ],
        "type": "object"
      },
      "name": "lookup_looksmaxxing_term"
    },
    {
      "description": "Convert a PSL score (0–8 looksmaxxing face rating scale) into its tier name, approximate population percentile and casual 1–10 equivalent.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "psl": {
            "description": "PSL score, 0–8",
            "maximum": 8,
            "minimum": 0,
            "type": "number"
          }
        },
        "required": [
          "psl"
        ],
        "type": "object"
      },
      "name": "psl_score_lookup"
    }
  ]
}

What the leaf hashes

{"body":"3f02bd60460580c378d0eedc3a598ba5a076c4e1e8ffda5eab99bd8e71c2c497","id":522644,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793123868274753,"prev":null,"subject":"e7724801-37f3-472b-b587-c93b03d14edb","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. 0x3fb0fa981663f6b1000f62298d1cb28230ba617dfec657dac9a8b8cfee8dbdf0
2. 0xdee4f69bcf22952e9af7080f1c6569bb8015076011677a167a45584141057e35
3. 0x71a5532965f91892ebc4f63090fe3681828a2ac07c6e2d03dd9c76793b92beb3
4. 0x93fe6b7694fcb08a67f45da19a6dea39aa00edf6bbb50f865fe8a4c29433eb25
5. 0x6a51e5f944989b9917abfcf53335e1e4230e1f1c557cf8e3f151a97d2864ddb1
6. 0x8ae092c1cb97956f446b9d0059d130e6f11fc26fbd60d9184052893b1354f5f9
7. 0x80f9f43daab7c8c2187a5259f5985012920e525a222aa7fe84166873a299624b
8. 0x33dd74fad46a6aa971e5286cbaa5b4c0e0fbd0838e5373fb816c2cccd1515b2e
9. 0x13f7b2fd9e06ddd593869d91e2058bcd90f535c37d8b8a8e65963e3d316a8905
10. 0xde8a7a1684cc54bebea29451ca0ff176fb1bf88b37640660b248108b8592ff9d
11. 0x4f137633fff61e4e593fd379320dee6ab066de0db156d01c93cb3888d4cd2051
12. 0xbac4a74052976278393cfcc6a341f6cfd372f2fd8909eeffcc72872579289c40
13. 0xe097a5c0640b3c074fef1c9f5fe91898965687ad755f1c27c31462a60e313f0a
14. 0x1de9caca1fa6dbbe090ee48dad5f962bbfd09856fd897edc8c3c110272d35c56
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4