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Evidence row 526813

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://stall-row-production.up.railway.app/v1/gas-oracle
Recorded
Previous row
#451879
Body SHA-256
424d55ce659a1276536b915aa942f78f3ae4332ddd6f36c021db6f35674cb815
Leaf
0x594466f775f69a5f98a3c299bca4d367334fc2630238210933e77534bcda17cf

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://stall-row-production.up.railway.app/v1/gas-oracle"
    ]
  ],
  "name": "stall-row",
  "owner_address": "0x097f9685d1e0752bf8b02d61e5ce9be7ea0fba7f",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F",
        "scheme": "exact"
      }
    ],
    "description": "Current Base gas in one call: the live gas price, the current base fee, the base-fee range across the last 20 blocks, whether fees are rising, falling, or flat, and a cheap-window hint drawn from that data. Use this when an agent wants to time a transaction instead of paying whatever the moment charges.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {},
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "as_of_epoch": 1761000000,
              "base_fee_gwei": "0.0058",
              "base_fee_max_gwei_20_blocks": "0.0079",
              "base_fee_min_gwei_20_blocks": "0.0051",
              "blocks_sampled": 20,
              "chain": "base",
              "cheapest_window_hint": "Base fee is flat across the last 20 blocks.",
              "gas_price_gwei": "0.0062",
              "latest_block": 22104511,
              "note": "Trend and hint describe the last ~20 blocks only.",
              "trend": "flat"
            },
            "schema": {
              "properties": {
                "as_of_epoch": {
                  "type": "integer"
                },
                "base_fee_gwei": {
                  "type": "string"
                },
                "base_fee_max_gwei_20_blocks": {
                  "type": "string"
                },
                "base_fee_min_gwei_20_blocks": {
                  "type": "string"
                },
                "blocks_sampled": {
                  "type": "integer"
                },
                "chain": {
                  "type": "string"
                },
                "cheapest_window_hint": {
                  "type": "string"
                },
                "gas_price_gwei": {
                  "type": "string"
                },
                "latest_block": {
                  "type": "integer"
                },
                "note": {
                  "type": "string"
                },
                "trend": {
                  "enum": [
                    "rising",
                    "falling",
                    "flat"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "chain",
                "latest_block",
                "gas_price_gwei",
                "base_fee_gwei",
                "trend",
                "cheapest_window_hint"
              ],
              "type": "object"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {},
                  "required": [],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "as_of_epoch": {
                      "type": "integer"
                    },
                    "base_fee_gwei": {
                      "type": "string"
                    },
                    "base_fee_max_gwei_20_blocks": {
                      "type": "string"
                    },
                    "base_fee_min_gwei_20_blocks": {
                      "type": "string"
                    },
                    "blocks_sampled": {
                      "type": "integer"
                    },
                    "chain": {
                      "type": "string"
                    },
                    "cheapest_window_hint": {
                      "type": "string"
                    },
                    "gas_price_gwei": {
                      "type": "string"
                    },
                    "latest_block": {
                      "type": "integer"
                    },
                    "note": {
                      "type": "string"
                    },
                    "trend": {
                      "enum": [
                        "rising",
                        "falling",
                        "flat"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "chain",
                    "latest_block",
                    "gas_price_gwei",
                    "base_fee_gwei",
                    "trend",
                    "cheapest_window_hint"
                  ],
                  "type": "object"
                },
                "schema": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:13:23.659Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-27T10:13:23.457Z"
    },
    "resource": "https://stall-row-production.up.railway.app/v1/gas-oracle",
    "serviceName": "stall-row",
    "tags": [
      "base",
      "gas",
      "fees",
      "data",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current Base gas in one call: the live gas price, the current base fee, the base-fee range across the last 20 blocks, whether fees are rising, falling, or flat, and a cheap-window hint drawn from that data. Use this when an agent wants to time a transaction instead of paying whatever the moment charges."
}

What the leaf hashes

{"body":"424d55ce659a1276536b915aa942f78f3ae4332ddd6f36c021db6f35674cb815","id":526813,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124791548269,"prev":451879,"subject":"x402_bazaar:https://stall-row-production.up.railway.app/v1/gas-oracle","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).

  1. 0x594455e71369f45c9aeb8b02c058cf46d5ea99f0eb47994862aa544357cade0b
  2. 0xc990141f84d4f4a6d89cd724aa779f412b05f5f724b067a0c5fe55fb36ae87db
  3. 0x0fca9815a6423e0db846af46da1a6369061d6eddba9e9d493b782c115fc372b2
  4. 0xedbdc1884bbaf2640e2531c8005253c295b04850e2ebdcad8dff163370c4e7b8
  5. 0x8954ed90abbab5cd4c43682e27ac57ccbe6a7c02381dae545feb400e741c5e40
  6. 0xd886cdc6d122224e289c66352b406fde1d0499cab789ab3d8c5d5409acb602e9
  7. 0xe6fef5e3e71b67883b553c9d1225c903fac8975017a7e218a52e104e8b6ee804
  8. 0x9c1ef4ebc47ef239d5c14c7f14278def03ec34256bf91b5091328a156c59d08b
  9. 0x3834df529274a9b372f6ac40e632508214881fc84e66fc7b382121900d28e793
  10. 0x7e1b9e14e6163c14ee78839d55690d07d8aa2e81481fdf9840c943f2e2833a05
  11. 0x095b40edf800595a91733b7d7641dc11c53f74bc29c345d97d171068bd13ee53
  12. 0x6f9c2e17fd073d07da42da76c8ca2f200b30027f0378b0d9628f8fac6f48cd16
  13. 0x5b3213451efe1e2950dd287afaede00cc8a45dfd9721ef9b3d698bde1eeb9909
  14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
  15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
  16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
  17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
  18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
  19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
Day root
0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
Chained
0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
Published
On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4

How to check it · This row as JSON