Evidence row 738912

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Look up a specific paint color by name or color number (e.g. 'Agreeable Gray', 'SW 7029', 'HC-154', 'Hale Navy Benjamin Moore') and get its brand, color number, hex and availability (current, retired or discontinued). Use it to get the hex of a named paint color before calling match_paint_color, or to check that a color name or number exists. Searches 26,000+ colors across 13 brands; call list_brands for the brand slugs.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "brand": {
            "description": "Optional. Restrict the search to one brand slug from list_brands, e.g. 'behr'.",
            "type": "string"
          },
          "limit": {
            "description": "Optional. Number of colors to return (1–10). Default 5.",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Color name, color number, or both, optionally with the brand name (e.g. 'Agreeable Gray', 'SW 7029', 'Repose Gray sherwin williams').",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "find_paint_color"
    },
    {
      "description": "List the 13 paint brands PaintColorHQ covers, with each brand's slug (the value the brand argument of match_paint_color and find_paint_color takes), its name and its number of colors.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_brands"
    },
    {
      "description": "Find the closest real, purchasable paint colors across 13 major brands (Sherwin-Williams, Benjamin Moore, Behr, Valspar, PPG, Dunn-Edwards, and more) for any hex color, scored with the CIEDE2000 (Delta-E) perceptual color-difference standard. Use this to answer \"what is the [brand] equivalent of [a paint color]\", to cross-reference a paint color across brands, or to turn a hex/RGB value into named paint colors you can actually buy. If you only have a paint color's name or number, call find_paint_color first to get its hex. Each result returns the brand, color name, color number, hex, a closeness label and availability (current, retired or discontinued). Data and method: PaintColorHQ (paintcolorhq.com).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "brand": {
            "description": "Optional. Restrict matches to one brand slug, e.g. 'sherwin-williams', 'benjamin-moore', 'behr', 'valspar', 'ppg', 'dunn-edwards'.",
            "type": "string"
          },
          "hex": {
            "description": "Target color as a 6-digit hex code, with or without '#' (e.g. '7F9B8E' or '#7F9B8E').",
            "type": "string"
          },
          "limit": {
            "description": "Optional. Number of cross-brand matches to return (1–10). Default 10.",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "hex"
        ],
        "type": "object"
      },
      "name": "match_paint_color"
    }
  ]
}

What the leaf hashes

{"body":"9aecd3ecbdefbbe8305bb46cf501de56fa450bcbecaa2701d700a24b8d19c87d","id":738912,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793166110742370,"prev":null,"subject":"7b93dcf0-a2d5-4d71-896d-ca27ea27eb3e","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x0d7fb1e8ff98f7d304ae9a6fbf74085ac76a001e847f890c9f49444700460202
2. 0x6c9c8c7b0bc690a027a92aa59d2e0835a70672b3ef1f5582cb738d62ea919d6c
3. 0xfa4667a4dd404576c0f232d19d08ee2e3029530c5fd82fd3a8035773af302155
4. 0xfde4694d0f385eb4db380481dc1acf48b4048617d1924ecb5adacc49fb83a97c
5. 0x4a7e2cd623bcb97dbbdc031862c9ae42f629b6daff6f74b28fec9794ee0947a5
6. 0xae7256f3b9b677cb00cf95557bf66191d22be7e399ecd16e23f700d6107599c6
7. 0x927e0a6195eaeba3a22123b8a667d6f7cb79cb7774095191c4c6fcd25f6c8138
8. 0x10a1a6e9f63bb7725fa441fbdea860b0ded52aef420f0462e91c793a5bb848cf
9. 0xeee68e1f936e5338c9004d242aa98d4a5f8a11da61f7e7b399e7326f2ae6fad0
10. 0x071183021e5a98e42829b6bea0254169106d36fc0e8b13a6dda99f592a1f61ac
11. 0x2f35bb84c1c8813dd74e1b753a1aaaf9f0e72eac9b76f2433d88835b7a058f39
12. 0x60467e72ee1c7e1a625989cc84742be5994ca41aa97557ccf246ec0f902a4228
13. 0xfd1df77ed593d89e10dbf20c0bb022fdc7c5fff3d41d686683936ce3d2b0638c
14. 0xd255034c045ff2574d11cb3757ffb240536c7380f2dfbe54e8a41bd8797bd254
15. 0x2d4bed6c1c0f427d29eba935cdedcc76c72935d41919903a3b217a8ffca38438
16. 0x35e8995c30094446ec790423171382fccb377081b921295b0ae3840cc2c4f52c
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae