Evidence row 556616

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "How one to three watches fit a wrist of a given size, checked against WORN's catalogue of 46,000 watches (case, thickness, lug width): how far each watch's lugs stop from the edges of the wrist, whether it wears bigger or smaller than its case, and how it sits under a shirt cuff. Returns the verdicts in words, a link to the watches drawn to scale on the wrist, and the drawing as a card where cards are shown. Names are matched as people say them; case_mm and lug_to_lug_mm, when known, make the answer exact.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "watches": {
            "items": {
              "properties": {
                "case_mm": {
                  "description": "Case diameter in mm (width, for a square case), if you know it; it picks the right size where the model comes in several. Leave out and WORN uses its catalogue",
                  "maximum": 60,
                  "minimum": 20,
                  "type": "number"
                },
                "lug_to_lug_mm": {
                  "description": "Lug-to-lug span in mm from the maker's specs, if you know it. WORN's catalogue does not hold it: left out, it is estimated at 1.2 times the case and said to be",
                  "maximum": 75,
                  "minimum": 20,
                  "type": "number"
                },
                "name": {
                  "description": "The watch's brand and model as the person would say them, e.g. 'Tudor Black Bay 58' or 'Omega Seamaster Diver 300M'. WORN looks it up in its catalogue of 46,000 watches",
                  "maxLength": 80,
                  "minLength": 1,
                  "type": "string"
                },
                "note": {
                  "description": "One short line on why you suggest this watch, shown under it",
                  "maxLength": 140,
                  "type": "string"
                },
                "shape": {
                  "description": "Case shape, for the drawing",
                  "enum": [
                    "round",
                    "square"
                  ],
                  "type": "string"
                },
                "thickness_mm": {
                  "description": "Case thickness in mm, if you know it; WORN's catalogue fills it where it can",
                  "maximum": 30,
                  "minimum": 3,
                  "type": "number"
                }
              },
              "required": [
                "name"
              ],
              "type": "object"
            },
            "maxItems": 3,
            "minItems": 1,
            "type": "array"
          },
          "wrist_mm": {
            "description": "Wrist circumference in mm, measured where a watch sits (17 cm is 170)",
            "maximum": 260,
            "minimum": 120,
            "type": "number"
          }
        },
        "required": [
          "wrist_mm",
          "watches"
        ],
        "type": "object"
      },
      "name": "fit_watch"
    },
    {
      "description": "The wrist size the person measured with their phone through a try-on link (start_try_on), the watch they liked best, and how each watch fits that wrist. Says when they have not sent it yet, or when the link has expired.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "code": {
            "description": "The code start_try_on returned",
            "maxLength": 12,
            "minLength": 4,
            "type": "string"
          }
        },
        "required": [
          "code"
        ],
        "type": "object"
      },
      "name": "get_try_on_result"
    },
    {
      "description": "For a person who does not know their wrist size, or wants to see watches on their own wrist. Makes a link, with a QR code for a computer, that opens on their phone: the back camera measures the wrist in a few seconds with no tape or coin, then draws each watch on a photo of their own wrist at true size, to switch between. Nothing of the picture leaves the phone; tapping Send shares only the size and the watch they liked, which get_try_on_result returns with the code. Up to three watches; the link works for an hour. A picture of each watch can come as a link in image_url (a cutout with a transparent background, or the maker's or a shop's product photo on a plain white or grey background, which WORN cuts out) or as an uploaded file in photos; WORN shows it on the wrist at true size in place of its drawing.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "photos": {
            "description": "Pictures of the watches the person uploaded, straight on, to draw on their wrist in place of the drawing: a cutout, or the watch on a plain background, which WORN cuts out",
            "items": {
              "properties": {
                "download_url": {
                  "description": "The file's download URL, as ChatGPT gives it",
                  "type": "string"
                },
                "file_id": {
                  "description": "The file's id, as ChatGPT gives it",
                  "type": "string"
                },
                "file_name": {
                  "type": "string"
                },
                "mime_type": {
                  "type": "string"
                },
                "watch": {
                  "description": "The name of the watch in the picture, as given in watches; left out, the pictures go to the watches in order",
                  "maxLength": 80,
                  "type": "string"
                }
              },
              "required": [
                "download_url",
                "file_id"
              ],
              "type": "object"
            },
            "maxItems": 3,
            "type": "array"
          },
          "watches": {
            "description": "The watches to try on",
            "items": {
              "properties": {
                "case_mm": {
                  "description": "Case diameter in mm (width, for a square case), if you know it; it picks the right size where the model comes in several. Leave out and WORN uses its catalogue",
                  "maximum": 60,
                  "minimum": 20,
                  "type": "number"
                },
                "image_case_px": {
                  "description": "Width in pixels of the case in that picture, edge to edge without the crown (40 to 4000), if you know it; left out, WORN measures it from the watch's outline",
                  "type": "number"
                },
                "image_url": {
                  "description": "https link to the best picture you have of this exact watch, seen from the front, straight on, 12 o'clock up and the crown to the right (PNG, WebP or JPEG). Best is a cutout with a transparent background; a product photo on a plain white or grey background works too, as WORN cuts the watch out of it. WORN draws it on the person's own wrist at true size; a watch shot on a wrist, at an angle or on a busy background is drawn from its sizes instead",
                  "maxLength": 1000,
                  "type": "string"
                },
                "lug_to_lug_mm": {
                  "description": "Lug-to-lug span in mm from the maker's specs, if you know it. WORN's catalogue does not hold it: left out, it is estimated at 1.2 times the case and said to be",
                  "maximum": 75,
                  "minimum": 20,
                  "type": "number"
                },
                "name": {
                  "description": "The watch's brand and model as the person would say them, e.g. 'Tudor Black Bay 58' or 'Omega Seamaster Diver 300M'. WORN looks it up in its catalogue of 46,000 watches",
                  "maxLength": 80,
                  "minLength": 1,
                  "type": "string"
                },
                "note": {
                  "description": "One short line on why you suggest this watch, shown under it",
                  "maxLength": 140,
                  "type": "string"
                },
                "shape": {
                  "description": "Case shape, for the drawing",
                  "enum": [
                    "round",
                    "square"
                  ],
                  "type": "string"
                },
                "thickness_mm": {
                  "description": "Case thickness in mm, if you know it; WORN's catalogue fills it where it can",
                  "maximum": 30,
                  "minimum": 3,
                  "type": "number"
                }
              },
              "required": [
                "name"
              ],
              "type": "object"
            },
            "maxItems": 3,
            "minItems": 1,
            "type": "array"
          }
        },
        "required": [
          "watches"
        ],
        "type": "object"
      },
      "name": "start_try_on"
    },
    {
      "description": "The case diameters and lug-to-lug spans that fit a wrist of a given circumference, and why lug to lug matters more than the case.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "wrist_mm": {
            "description": "Wrist circumference in mm, measured where a watch sits (17 cm is 170)",
            "maximum": 260,
            "minimum": 120,
            "type": "number"
          }
        },
        "required": [
          "wrist_mm"
        ],
        "type": "object"
      },
      "name": "suggest_sizes"
    }
  ]
}

What the leaf hashes

{"body":"90b22ca70d517ac64ab6062196bc3c3f9e2c22ba9afae48892ee3c05aeb7799a","id":556616,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793133940774787,"prev":null,"subject":"e0e2e380-6a9d-4f9b-8c2c-19092b7fe22f","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. 0x6fb4832164b789d0d8132ce763741016442a1171425dd8f036da4f5f90c049f6
2. 0xc1cafe5c93b80e7764c829683dafa8a26668685758ba390f18afa75aa4a81ec2
3. 0x18b14619a10e7aac6a7c44bc3579a3de0957deaf5812ca1f87ab8c478248e342
4. 0x799019739179728c63efd17e8a0ce423cc9236e895042b01739f52b981f2874d
5. 0x0a647b960eef58cb3962a276f2618d71a58c965530d3c43ea7dcef35021731d6
6. 0xe9c4fb62d0b9c33294e36ea83cda7c1e14100ee6555f0e26e2dc83328c44056c
7. 0xcc902819b0af5222684ad61e5af317320c56f514566ad01b7da5d68547a96f14
8. 0x402d46c1515e26fdd36f83c89dd9ed2f099670af27c242a14a6923376bc0caf5
9. 0x95eaa1a4db3b12fa5a47352b66f1d37d4ff8c8862d12f95869ca9121315cafea
10. 0xa27da8e8a4fa4f9fb5ddd69347773ae2761faa8365e96f856a4f09c13db2466d
11. 0x8dfd9b64c5c5705a7996a8e2695cbd3c6bcad8c7f84f2d6e132889f554cf23cc
12. 0x4150865dc22c5026ab3aaed78166c00f6d1d55d60deb27596b675ffe296e1e81
13. 0x2926e99aefa0ff2e14a67a3ae10a7f6e753ce4b799c6fe531f8cbf8d33b31a66
14. 0xb2ae53d841a55a805fb4078b1a7d44e08a81aba4be3690bac3a5b4c366bf39da
15. 0x275720ecabb68df33eee92ae4fd70572a8d952d6c61c061c2869cfc3217aa5c5
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4