Evidence row 120049

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://saylorinnovations.com/api/kb/agent-observability
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 6534ba0187c50adc4346cef698e3c71fa3cd105246e57837d90c2ca63070c0b6
Leaf: 0x6fea1acaa313f59a18adaa445ea7ca0a1b09898d123de063f73cafd36dcd1b49

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/agent-observability"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:agent-observability",
          "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": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:agent-observability",
          "name": "USD Coin",
          "note": "Polygon 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": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:agent-observability",
          "name": "USD Coin",
          "note": "Arbitrum 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": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "memo": "saylor:agent-observability",
          "reference": "3uEzKEN7n6cCq4KuiSwu5ZhGB25pMa7gA3ZBpkhR457v",
          "session": "eyJhcnRpY2xlSWQiOiJhZ2VudC1vYnNlcnZhYmlsaXR5IiwicmVmZXJlbmNlIjoiM3VFektFTjduNmNDcTRLdWlTd3U1WmhHQjI1cE1hN2dBM1pCcGtoUjQ1N3YiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ1OTY2MDg1NX0.4-J8cgwROTAz-ZYCt78d2rKzIqdF_YO6g79YGqzZ1pk"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "memo": "saylor:agent-observability",
          "reference": "ANczfTz28NwwAuMRf19zdrTryZZW1fFnztGtCV1tnuoX",
          "session": "eyJhcnRpY2xlSWQiOiJhZ2VudC1vYnNlcnZhYmlsaXR5IiwicmVmZXJlbmNlIjoiQU5jemZUejI4Tnd3QXVNUmYxOXpkclRyeVpaVzFmRm56dEd0Q1YxdG51b1giLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ1OTY2MDg1NX0.0CjFl1inMzESVFgQayJ26OJLCDB8553fFhXT497-Ld0"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93206",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:agent-observability",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "96089",
          "reference": "FYgUKg8YzG3u7rFTYfh5ANdtD9zG3CtgTfQ9mmugMwE9",
          "session": "eyJhcnRpY2xlSWQiOiJhZ2VudC1vYnNlcnZhYmlsaXR5IiwicmVmZXJlbmNlIjoiRllnVUtnOFl6RzN1N3JGVFlmaDVBTmR0RDl6RzNDdGdUZlE5bW11Z013RTkiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTMyMDYsImV4cCI6MTc5MjQ1OTY2MDg5Mn0.qzTvgHBVs4o4TMDzZice48ENdL7xTDlqeHeIPxNGY94",
          "solUsdPrice": 104.07
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Privacy-bounded agent telemetry - run and event schema, correlation IDs and allowlisted fields",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A procedure for building privacy-bounded agent telemetry: defining the actual incident/SLO questions before collecting anything, designing a run/state/event schema with stable correlation IDs across retries, allowlisting safe fields instead of capturing-then-scrubbing, joining model and tool events to a separately verified business outcome (not just model completion text), building alerts on tested deviations, and injecting canary secrets to prove the pipeline doesn't leak.",
              "c": "AI & Agents",
              "id": "agent-observability",
              "t": "Agent Observability Guide"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "body": {
                      "description": "Main body text",
                      "type": "string"
                    },
                    "c": {
                      "description": "Category of the guide",
                      "type": "string"
                    },
                    "id": {
                      "description": "Identifier of the record",
                      "type": "string"
                    },
                    "license": {
                      "description": "License identifier",
                      "type": "string"
                    },
                    "price": {
                      "description": "Price",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "t": {
                      "description": "Title of the guide",
                      "type": "string"
                    }
                  },
                  "required": [
                    "id",
                    "t",
                    "c",
                    "body"
                  ],
                  "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/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-20T01:25:40.945Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T01:25:40.536Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/agent-observability",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "observability",
      "telemetry",
      "agent-monitoring",
      "opentelemetry",
      "cost-tracking"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Privacy-bounded agent telemetry - run and event schema, correlation IDs and allowlisted fields"
}

What the leaf hashes

{"body":"6534ba0187c50adc4346cef698e3c71fa3cd105246e57837d90c2ca63070c0b6","id":120049,"kind":"listing","method":"baseline/1","observed_us":1793025617143559,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/agent-observability","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON