Evidence row 119707

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/encode/base64"
    ]
  ],
  "name": "Saylor Innovations Dev Tools",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:devkit:encode-base64",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "memo": "saylor:devkit:encode-base64",
          "reference": "EsJZnbr9bNmnfRc8tGUo7n94Ch8rJu79uJ6UFtqR9cyM",
          "session": "eyJhcnRpY2xlSWQiOiJkZXZraXQ6ZW5jb2RlLWJhc2U2NCIsInJlZmVyZW5jZSI6IkVzSlpuYnI5Yk5tbmZSYzh0R1VvN245NENoOHJKdTc5dUo2VUZ0cVI5Y3lNIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIxNzU3NTU5OTl9.YvgcwSJ5e9T6iFKBF8C8tAruUNV0X-SnxYOnfP5NyLU"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Base64 encode and decode text - returns standard and URL-safe base64, or the decoded text with UTF-8 detection",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "op": "encode",
              "text": "Hello, agent!"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "input_chars": 13,
              "op": "encode",
              "result": "SGVsbG8sIGFnZW50IQ==",
              "url_safe": "SGVsbG8sIGFnZW50IQ"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "op": {
                      "description": "encode (default) or decode",
                      "type": "string"
                    },
                    "text": {
                      "description": "Text to encode or base64 to decode",
                      "type": "string"
                    }
                  },
                  "required": [
                    "text"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "bytes": {
                      "description": "Size in bytes",
                      "type": "number"
                    },
                    "checked_at": {
                      "description": "Time the check was run (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "input_chars": {
                      "description": "Input chars",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "is_utf8_text": {
                      "description": "True when this is utf8 text",
                      "type": "boolean"
                    },
                    "op": {
                      "description": "Operation performed",
                      "type": "string"
                    },
                    "result": {
                      "description": "Result of the operation",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "url_safe": {
                      "description": "Url safe",
                      "type": "string"
                    }
                  },
                  "required": [
                    "op",
                    "result"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-16T18:33:56.068Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-16T18:33:55.74Z"
    },
    "resource": "https://saylorinnovations.com/api/encode/base64",
    "serviceName": "Saylor Innovations Dev Tools",
    "tags": [
      "encode",
      "base64",
      "calculator"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Base64 encode and decode text - returns standard and URL-safe base64, or the decoded text with UTF-8 detection"
}

What the leaf hashes

{"body":"6dcd81a2c4c2058a0a05e34e2a09435d9ab0a800de49a5cdafc334ddf601568c","id":119707,"kind":"listing","method":"baseline/1","observed_us":1793025616390638,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/encode/base64","subject_kind":"source_record"}

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. 0x60a00417d4c04c8982579dfbdb51c770bbf36933e89f320843b84700175b727c
2. 0x7112adf120ac3af774bf1ea8ac9db42d273c667aede3f5964eab7cbad32af7be
3. 0x0ac1a83db9bc07bfc063aae33d77cab0890b0a3ae93c49c1525e5a0feb6a52f9
4. 0x9a55d7dc27c53b80e395becff4fee0614af09f1e88112a92478f416a5162b716
5. 0x241790b59c6d9c3dae5fdee3ed6c49058918a9cc85ed4629e403bfa667a9e71a
6. 0xae958d4d2b6fa5a863ca9bc065ab99849aed5161c28df9102dde9abc4eb1420c
7. 0xf0b8458dab04dcf540db697bd7f22c42a6bf235c424c9d885050f5a6152cc8f1
8. 0xdb28d81d1f7d11f7378edaf0a7bcd8077d54dcf7776ab7c5b1240b6cdba202a1
9. 0x877147421df021d07d04391a5abd503eb912654cb2f6fce28944646f87101ccf
10. 0x490868b60140fda9b3c25d79c99d6f0d78d632ecde384aa788c6d47760ca6caa
11. 0x52877ea072e10a1d3a921f7b54362005ad7a9baf5c99f31ec73a534bfea8930d
12. 0xf4e3bedc99674db9d8ab4bc7655992ec76f822b327e6c89599b0baa3756fbd19
13. 0x89fcaf55e37dd777228f271b79ea895534a66ec0d184363c2a6eb1b4d23c9ef1
14. 0x216cebb9ae5414599109a02297c4817d7d1c6b1394afeb97efe38e32f0053974
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae