Evidence row 263759

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Get full detail for one part by id: parameters, verification status, datasheet, and absolute download URLs for .kicad_mod (footprint), .kicad_sym (symbol), .step and .glb (3D).",
      "inputSchema": {
        "properties": {
          "id": {
            "description": "Part id, e.g. 'jst_ph_4pin', 'usb_c_16p'",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_part"
    },
    {
      "description": "Get machine-readable instructions for adding a new part to the registry (file layout, metadata schema, quality gates, PR process). Use when a part is missing.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "how_to_contribute"
    },
    {
      "description": "List all parts in the registry (id, name, family, pins).",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_parts"
    },
    {
      "description": "Report real-world usage feedback for a part (e.g. 'fabricated 5 boards at JLCPCB, footprint fit perfectly' or 'pad 3 misaligned'). Feedback is recorded publicly on GitHub and builds the part's field-proven trust score. Please report after actually using a part — both successes and problems help.",
      "inputSchema": {
        "properties": {
          "notes": {
            "description": "Details: what you built, fab house, what worked or what was wrong (max 1000 chars)",
            "type": "string"
          },
          "part_id": {
            "description": "Part id, e.g. 'jst_ph_4pin'",
            "type": "string"
          },
          "result": {
            "description": "'worked' = used successfully, 'problem' = issue found",
            "enum": [
              "worked",
              "problem"
            ],
            "type": "string"
          }
        },
        "required": [
          "part_id",
          "result",
          "notes"
        ],
        "type": "object"
      },
      "name": "report_feedback"
    },
    {
      "description": "Request on-demand generation of a parametric part that isn't in the registry yet. The registry generates it (footprint+symbol+3D), runs quality gates, and publishes it within ~5 minutes. Pin-count families (use 'pins'): pin_header_254 (2.54mm), pin_header_200 (2.0mm), pin_header_127 (1.27mm) — pins 1-40. Variant families (use 'variant'): ht73xx (LDO Vout code: 7318,7325,7327,7330,7333,7335,7341,7350), ht78xx (7818,7825,7827,7830,7833,7850), sy8008 (grade a/b/c = 0.6A/1A/1.2A), max1704x (17048,17049). Always try get_part / search_parts first.",
      "inputSchema": {
        "properties": {
          "family": {
            "enum": [
              "pin_header_254",
              "pin_header_200",
              "pin_header_127",
              "ht73xx",
              "ht78xx",
              "sy8008",
              "max1704x"
            ],
            "type": "string"
          },
          "pins": {
            "description": "for pin_header_* families",
            "maximum": 40,
            "minimum": 1,
            "type": "integer"
          },
          "variant": {
            "description": "for variant families (e.g. '7350', 'a', '17049')",
            "type": "string"
          }
        },
        "required": [
          "family"
        ],
        "type": "object"
      },
      "name": "request_part"
    },
    {
      "description": "Search the PartReel registry of verified KiCad components (footprint + symbol + 3D STEP/GLB, no login, CC-BY-4.0). Returns matching parts with ids. Use get_part for download URLs. Example queries: 'usb-c', 'jst ph 4pin', 'esp32', 'microsd', 'screw terminal'.",
      "inputSchema": {
        "properties": {
          "query": {
            "description": "Search text (name, family, keywords, pin count)",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_parts"
    },
    {
      "description": "Upload a part you built so it is SHARED IMMEDIATELY (status 'staging', unverified). It becomes searchable and downloadable right away; hourly CI then runs the full quality gates and opens a PR to promote it to the verified registry. Provide the full text of the .kicad_sym and .kicad_mod files plus metadata. Cite real datasheet dimensions in dimensions_source — copies of the official KiCad (CC-BY-SA) library are auto-rejected at promotion.",
      "inputSchema": {
        "properties": {
          "category": {
            "description": "one of: connector, discrete, ic, passive, switch, module, etc",
            "type": "string"
          },
          "datasheet": {
            "description": "datasheet URL (optional)",
            "type": "string"
          },
          "description": {
            "type": "string"
          },
          "dimensions_source": {
            "description": "datasheet URL + page/figure the dimensions came from (min 20 chars)",
            "type": "string"
          },
          "footprint": {
            "description": "full .kicad_mod file text",
            "type": "string"
          },
          "id": {
            "description": "part id: lowercase letters/digits/underscore, 3-64 chars, e.g. 'ti_sn74lvc1g08_sot23'",
            "type": "string"
          },
          "license": {
            "description": "CC-BY-4.0 for original work; MIT/Apache-2.0/CERN-OHL-P/CC-BY for imports",
            "type": "string"
          },
          "name": {
            "description": "human-readable name / MPN",
            "type": "string"
          },
          "symbol": {
            "description": "full .kicad_sym file text",
            "type": "string"
          }
        },
        "required": [
          "id",
          "name",
          "description",
          "category",
          "license",
          "dimensions_source",
          "symbol",
          "footprint"
        ],
        "type": "object"
      },
      "name": "submit_part"
    }
  ]
}

What the leaf hashes

{"body":"39b48adf1ac58d9c65874add6a9fa6cc4e71891c7db0053caf5ec06ababa82e7","id":263759,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793033686331435,"prev":null,"subject":"1e308b82-fe82-4957-a3bc-3a2958dbba64","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x2b1e64d0813d6519d9a045ceec556b9259e863adba44a1b5c1e39259cc2b53e9
2. 0x07585246433db5af727b64734816a762a21135298bbf66c50a8574deab6251fc
3. 0x88b53d31f06e87f62efb1908db436d056299340737a42fbf9bacea3b04562350
4. 0xc393f16786a22d0b35184f734cd8ef040d8061137c8f4a97713b8ea6649ce8f5
5. 0x31532615c3b5325336bab7125ee0f9a8636ab9d8e532dd906cc4b590c8cf3639
6. 0x99cfb73e8341ce07682ab32dcc5ca3f18e9b41b47d15da9129a701458c6a751c
7. 0xf0e73b602802d1a8fb834adc6b96ab27a9f6ca96adc3fe8e5510c0bcf3cb9908
8. 0x1dc1419dc6e9579f7eb447ca693d64b843280e6c4630469e40eef9d28c8ac99c
9. 0x33aee3f1b00299058740ab3a933e5972ee5f5272ffa5367aa267a83a44833793
10. 0xaa8650f76913e91404db3fdf03026f9761609152eb2e32f71c4d93058b86b406
11. 0xde76827525517f5c8aef4ffd7831eab09ee63757dcc2282bc64307fd6ee67ad1
12. 0xe8bf822fd6c66b233e3e13e08596e8fb41c1ed9b85be0e4d50cfc9b740c0e206
13. 0xb87e8b32cda179c9e632e227bbd8a6d1f6f61d9d81bb92dbd4dd835d2b3b5caa
14. 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae