Evidence row 19880

Observed 26 Oct 2026, 14:35 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://ontarioprotocol.com/api/x402/base/balances
Recorded: 26 Oct 2026, 14:35 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 1f9bc38858e9b3d2c233102c0651a1b5cbe7c5a7e64dfc85e61646fde24d8430
Leaf: 0xb4aad486bb8f930bc2f51dfda4a8192cc4da2514376db92a8d8543c783339d41

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ontarioprotocol.com/api/x402/base/balances"
    ]
  ],
  "name": "Ontario Protocol",
  "owner_address": "0xa2d72abf2c5e939fddca4156b74de482e03ca3ec",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "quote_expires_at": 1792977587,
          "quote_id": "fc64548de9474d6e868c24c0d53847cc",
          "resourceUrl": "https://ontarioprotocol.com/api/x402/base/balances",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xa2d72aBF2C5e939fdDCA4156B74dE482e03CA3ec",
        "scheme": "exact"
      }
    ],
    "description": "What does this Base wallet hold? ETH, USDC and about 25 widely held Base tokens, plus up to 20 ERC-20 contracts you name, with symbol, decimals, raw and formatted amounts and the block number read, live from Base RPC. Required: address. $0.002 USDC on Base. Failed read, no charge. No account, no API key. Base mainnet only; no prices or USD values; tokens outside the list and your extras are not discovered. By Ontario Protocol.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0xa2d72aBF2C5e939fdDCA4156B74dE482e03CA3ec"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "address": "0xa2d72aBF2C5e939fdDCA4156B74dE482e03CA3ec",
              "block": 53049908,
              "block_timestamp": "2026-10-25T00:46:03Z",
              "coverage": {
                "default_list_size": 25,
                "default_list_unread": 0,
                "requested": 0
              },
              "coverage_note": "Default-list tokens appear only with a nonzero balance; requested tokens always appear. Tokens outside the list and the request are not discovered. No prices or USD values.",
              "native": {
                "decimals": 18,
                "formatted": "0.00001409862268672",
                "raw": "14098622686720",
                "symbol": "ETH"
              },
              "network": "eip155:8453",
              "read_at": "2026-10-25T00:46:04Z",
              "schema": "ontario.base_balances.v1",
              "source": "Base RPC",
              "tokens": [
                {
                  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                  "decimals": 6,
                  "formatted": "10.402131",
                  "raw": "10402131",
                  "source": "default_list",
                  "symbol": "USDC"
                }
              ]
            }
          }
        },
        "schema": {
          "properties": {
            "input": {
              "properties": {
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "address": {
                      "description": "Base wallet or contract address to read.",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "tokens": {
                      "description": "Optional comma-separated ERC-20 contract addresses to read as well, max 20.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "address"
                  ],
                  "type": "object"
                }
              },
              "required": [
                "queryParams"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "additionalProperties": true,
                  "type": "object"
                }
              },
              "required": [
                "example"
              ],
              "type": "object"
            }
          },
          "required": [
            "input",
            "output"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792947859/bazaar-icons/8374ff393e7c4b50.png",
    "lastUpdated": "2026-10-26T01:14:47.501Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-26T01:14:47.275Z"
    },
    "resource": "https://ontarioprotocol.com/api/x402/base/balances",
    "serviceName": "Ontario Protocol",
    "tags": [
      "base wallet balance",
      "wallet balances",
      "erc20 balance",
      "portfolio",
      "base"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "What does this Base wallet hold? ETH, USDC and about 25 widely held Base tokens, plus up to 20 ERC-20 contracts you name, with symbol, decimals, raw and formatted amounts and the block number read, live from Base RPC. Required: address. $0.002 USDC on Base. Failed read, no charge. No account, no API key. Base mainnet only; no prices or USD values; tokens outside the list and your extras are not discovered. By Ontario Protocol."
}

What the leaf hashes

{"body":"1f9bc38858e9b3d2c233102c0651a1b5cbe7c5a7e64dfc85e61646fde24d8430","id":19880,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025332201659,"prev":null,"subject":"x402_bazaar:https://ontarioprotocol.com/api/x402/base/balances","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).

0xb4aad304590e0e69baa3182632b1c921a6405a296c9e1427db23223d40039a95
0x66bf6f1f9bbcce4eaee7a422fdd49e19f10139f546bd36b079bc928c0c1388a8
0x7512768fdfa41e81eb7814fd2259b5e132ad8bb9f4d831fd9549e99488151815
0x0511e9f7f41e5adb78add86889e1baaf9ca31ade9e77068722a7ee320464f38a
0x7769fb0b1cd77075d21b9da47327b836a281bf4bee8520faa56913411740362f
0x58fcb04ff53e87c944955a7e8c2492c9e9fab7daa3f22ec1fed68b4d09874b4a
0xbd2f103e8875f6ffedde52618146e9cae799d3e5797cbfffb22a510963c6b427
0xddc1e758c0b545e9079c57746ef2cd96098acb18c2b20360ea6e381f8275f525
0xa2f9426da32fefacce0df7d444a095ceb9bb43bfbc7630458b5b59699873dbd5
0x3a9c6702af5bb205f746160745b1ff440cc33b1b113d3f6b7c1c96033f9df602
0x559555135675e39701c05a4d63d274b59d60cf1dc8421a68215c770867d00aff
0x7a0f1751de1946feff7d8c8afc737dcc4d35f110809c15aa0fdb8363a9e31b2b
0x0d86419ca1dd0b62fd8b22ea2e8c74d441312cec3116a467bea429b43e026565
0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON