Evidence row 1507799

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.avasis.ai/v1/tip/base-gas"
    ]
  ],
  "name": "Avasis Agent Platform",
  "owner_address": "0x6264191d6dd5427435b5e829077842e130ef1fc8",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x6264191D6dD5427435B5E829077842e130Ef1fc8",
        "scheme": "exact"
      }
    ],
    "description": "Base (chain 8453) gas tip for agents that send transactions: latest block number and age, base fee, eth_gasPrice, eth_maxPriorityFeePerGas and a suggested maxFeePerGas (2x base fee + priority), from one batched RPC call every 2 s. Long-poll with ?since=<seq>&wait=25. Prepaid meter price $0.0002/call (packs at /v1/meter); SSE at /v1/stream/tips.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "ageMs": 420,
              "changed": true,
              "data": {
                "blockAgeSeconds": 1,
                "blockNumber": 37400000,
                "chain": "base",
                "chainId": 8453,
                "gwei": {
                  "baseFee": 0.0021,
                  "gasPrice": 0.0031,
                  "maxPriorityFee": 0.001,
                  "suggestedMaxFee": 0.0052
                }
              },
              "observedAt": "2026-10-29T12:00:00.000Z",
              "seq": 812,
              "stale": false,
              "topic": "base-gas"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "since": {
                      "description": "long-poll: the seq you already have; answers as soon as a newer value exists",
                      "minimum": 0,
                      "type": "integer"
                    },
                    "wait": {
                      "description": "long-poll: seconds to wait for a newer value (0..25); with a prepaid token an unchanged answer is free",
                      "maximum": 25,
                      "minimum": 0,
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "data": {
                      "type": "object"
                    },
                    "observedAt": {
                      "type": "string"
                    },
                    "seq": {
                      "type": "integer"
                    },
                    "topic": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "topic",
                    "seq",
                    "data"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "bc_d5i1omim"
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-31T18:40:16.582Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-30T15:15:00.102Z"
    },
    "resource": "https://agents.avasis.ai/v1/tip/base-gas",
    "serviceName": "Avasis Agent Platform",
    "tags": [
      "realtime",
      "long-poll",
      "sse",
      "base",
      "gas"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Base (chain 8453) gas tip for agents that send transactions: latest block number and age, base fee, eth_gasPrice, eth_maxPriorityFeePerGas and a suggested maxFeePerGas (2x base fee + priority), from one batched RPC call every 2 s. Long-poll with ?since=<seq>&wait=25. Prepaid meter price $0.0002/call (packs at /v1/meter); SSE at /v1/stream/tips."
}

What the leaf hashes

{"body":"8c7ce4128b06361e1d5bdab13c8c1738715f8e5ac041ea862ec6775baec8ab50","id":1507799,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793472704939217,"prev":1261571,"subject":"x402_bazaar:https://agents.avasis.ai/v1/tip/base-gas","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xaf8975df50bb2f76b508db3ec4a82fe89a995b7be2ae3d900d8a601c09b6c3aa
2. 0x2c7aa8a1d479bb110ae31a0c4e25d6e712b6cc0328d9d7ec961cd36ebe979fe7
3. 0x393ceb6f08b96f08ed7343244b13bfdcf22cd53a73293807e9ff0c86c864f3b9
4. 0x1b23cea8659fd9ae071a7bfeeccd29bb566716c78a10755bc3114f0b5fd82031
5. 0xe115253fb6a30cd8d4fc28cd731e5df9ae7a25e4e9176a06e540b6b8d3580a94
6. 0x54f89af5e6d406438d3703997ca2a1bbdaffe34cd0e5725949f1e66024573512
7. 0x5e5d384f0c437c42f18c7acfda72bd46abae88b16876404b5e27dbb0af0f6f99
8. 0x432fbf320558e5ab48c92367425c66aa3a1947fffa42329527e047749f951b65
9. 0x81b77f3517f137f5943b6dea290ed5af5e208d6118692bfb12c0c3e066f5aa18
10. 0x3102631ef5bfa60a805ffce866e6913a38f65cfba5b42836443fe3c3dfe63350
11. 0x0f16742a3908655b5ceef1a052d752d22ccffe72ffcbefe4360cd3f705a65ac8
12. 0x99f245416ba879dd122979c99f59a2cee6bfded7eb430c11db2c1e2b31382629
13. 0xb09440bf6646ff777d33f0f00bc9aa431a06af5faf5954642c917acff5aa3d78
14. 0x17b4d08af91ab833713ac6154ec68f498dbe032401780285c2ccdadad6ac27f1
15. 0x57afe240b626bf60f6af8c76404811e95ea5519f217fac382bd159177a8ec870
16. 0x2e1cd25ce4079da9bfa6219d7ffec992149add4cd7d5c5b2cfee9908c1c8a5dd
17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0