Evidence row 2202093

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://color-design.x402tookit.com/gradient-steps"
    ]
  ],
  "name": "Color and Design Tools",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Evenly spaced color steps between two hex colors, in sRGB or linear light, for charts, heatmaps and gradients.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "from": "fff5eb",
              "space": "srgb",
              "steps": 7,
              "to": "7f2704"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T04:02:41.274Z",
              "colors": [
                "#fff5eb",
                "#ead3c5",
                "…5 more"
              ],
              "css": "linear-gradient(90deg, #fff5eb, #ead3c5, #d4b09e, #bf8e78, #aa6c51, #94492a, #7f2704)",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "from": "#fff5eb",
              "notChecked": [
                "perceptual evenness (use a perceptual ramp such as viridis for data)",
                "color-blind safety"
              ],
              "reasons": [
                "Endpoints are exact; steps are interpolated in srgb space."
              ],
              "source": "computed locally",
              "space": "srgb",
              "summary": "7 steps from #fff5eb to #7f2704: #fff5eb #ead3c5 #d4b09e #bf8e78 #aa6c51 #94492a #7f2704.",
              "to": "#7f2704",
              "verdict": "GRADIENT"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "from": {
                      "description": "Start hex color",
                      "type": "string"
                    },
                    "space": {
                      "description": "srgb (default) or linear",
                      "type": "string"
                    },
                    "steps": {
                      "description": "Number of colors, 2 to 32, default 7",
                      "type": "integer"
                    },
                    "to": {
                      "description": "End hex color",
                      "type": "string"
                    }
                  },
                  "required": [
                    "from",
                    "to"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "colors": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "css": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "from": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "space": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "to": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:42:54.346Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:42:54.168Z"
    },
    "resource": "https://color-design.x402tookit.com/gradient-steps",
    "serviceName": "Color and Design Tools",
    "tags": [
      "color",
      "gradient",
      "dataviz"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Evenly spaced color steps between two hex colors, in sRGB or linear light, for charts, heatmaps and gradients."
}

What the leaf hashes

{"body":"a2b29ec3c32704d5a2943dc7fb8a16d79b46bab8237b9a368a9a3ac62b15fa7c","id":2202093,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646812466721,"prev":null,"subject":"x402_bazaar:https://color-design.x402tookit.com/gradient-steps","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x237c161fa7e603894122060f0fb0469256f9987b5cfe5bc22ec491d0fe843e39
2. 0x887243e876005c3aa1501c6cfa82b5ed988791428d490cb9aec858fafdc5a06a
3. 0x21cca8958b55d4cba3bc5770f528d26057dfcaef81594fca2d83861ac2dba7d3
4. 0xe40421a422d6eaf69951860841d6c4e9c57bcbdb8e18caa91a2ec046be91d28b
5. 0x54e9aa8ab4d2031cd65558d6f9e31e8ee3248356d1fccd2b51ef4f7c9efbe533
6. 0x3403fee62cc45bb89749fc41bb7c3c9907c72ff46c2d93e38f1d6dde84045f65
7. 0xe91c611c22d401909eebaa6f7176223e6dc91d19cbfd1d79ca70ac861b2ac0e2
8. 0xd81da5198c2cf449f6f350e8e78250669cc18bfa7bf7f94b9c60c8e8e66db03a
9. 0x1afc0f2d9bc24388b402cddb8a1d7dd7b31ee6ad6ae61d7f3815621a3b79ee32
10. 0x7de7e8d8336c6c9cb25078217334cea1dad41bf275352d787a7e2b1c8c0025b2
11. 0xe599b947a76950ab1b6dea723a52b18fe2cb7489b3d2e5851f8ef0c61a5473d5
12. 0x251d841339877e796da5eab4731d6e687d4499550524134c4f906c15be505323
13. 0xf93fa2cd854f8a27091bbeacf6b201fd8e00bdda94b33ddd84474a8e39b2783b
14. 0x401f99eb33c3aca7fb1835eab8a9dc02765c5e3996fc9560617f4be6c7c50067
15. 0xcd21ec8d72a18a2d4513e4fd309abbb530810fb1dbeecd4b9b85acb4d6ff8f12
16. 0xac40f077ca4be8c3432a67771725cc315e8101fc2649999cfad2c900a7640e27
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af