Evidence row 120059

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/api-backpressure"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:api-backpressure",
          "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:api-backpressure",
          "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:api-backpressure",
          "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": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:api-backpressure",
          "reference": "2NtMB8uer37NR8aoaJWqSTDPzFxYEm8RhP1jxnnwhGSm",
          "session": "eyJhcnRpY2xlSWQiOiJhcGktYmFja3ByZXNzdXJlIiwicmVmZXJlbmNlIjoiMk50TUI4dWVyMzdOUjhhb2FKV3FTVERQekZ4WUVtOFJoUDFqeG5ud2hHU20iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ1OTk4MjI1OX0.sToCGf7nJzg1SpE8kQIvr3V5sJyiXRX5-ARi4RKyfK8"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:api-backpressure",
          "reference": "E8hUAymJDX42yACjtLJnTKfs8J2pL6xQJ9LTrDAwyLSF",
          "session": "eyJhcnRpY2xlSWQiOiJhcGktYmFja3ByZXNzdXJlIiwicmVmZXJlbmNlIjoiRThoVUF5bUpEWDQyeUFDanRMSm5US2ZzOEoycEw2eFFKOUxUckRBd3lMU0YiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ1OTk4MjI1OX0.usxc3LiNmVi96L1JxRNhdsB7zqEJlEvfZ0lS-plA14A"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93107",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:api-backpressure",
          "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": "95987",
          "reference": "4fV3C8FtobjSAH8s6kTJug1PkugFwqGS2ng8yZJYGdro",
          "session": "eyJhcnRpY2xlSWQiOiJhcGktYmFja3ByZXNzdXJlIiwicmVmZXJlbmNlIjoiNGZWM0M4RnRvYmpTQUg4czZrVEp1ZzFQa3VnRndxR1Mybmc4eVpKWUdkcm8iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTMxMDcsImV4cCI6MTc5MjQ1OTk4MjI1OX0.4rgMuaMoGsfSIk3emmOTmITav5CO0jtGGyoJEQgTXVo",
          "solUsdPrice": 104.18
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "API rate limit and backpressure control - bounded work, retry signals and no retry storms",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A tested capacity and backpressure policy that admits bounded work, returns useful retry signals, prevents retry storms, protects priority operations, and degrades without losing or duplicating accepted jobs.",
              "c": "Self-Hosting & Infra",
              "id": "api-backpressure",
              "t": "API Rate Limit and Backpressure Control"
            },
            "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": "2026-10-20T01:31:02.304Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T01:31:02.012Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/api-backpressure",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "backpressure",
      "rate-limiting",
      "api-reliability"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "API rate limit and backpressure control - bounded work, retry signals and no retry storms"
}

What the leaf hashes

{"body":"a405429d9eb0cc4de9289b4afbbf9dd74c8d5ba2347c7c14ca1d33658c61a10e","id":120059,"kind":"listing","method":"baseline/1","observed_us":1793025617162150,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/api-backpressure","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. 0x82a0ef8fb66f2ff281f24c07f70a39be388a2c873717dd22748611fbed690c09
2. 0x9a590d8eaa037d7bc4b16598fc833e9e6481dcccb2e6a8f60cf077d3adacd79a
3. 0x38c46805ff780457c771c96604c15a2b29daa3e20ca365b1df2a8d7291e4dd71
4. 0x5a251650a20115a97d7b70da78ea10f5716ec0b93aa38671383707d5b5e5e236
5. 0x28d15e1e46c995bd063c43ae9df543feae88927b9d899d96a97cdb5de84e416c
6. 0xf74a6512682ab5dc0c6200224a188816fc844feb34577369491ed56d33c7b128
7. 0x0d3dd1d5c6eb86f26912db06083b3274ae530c6df843ed36c419ecd896825ebf
8. 0x8e95b641fe9622f26dcadd28b617ad41007efe53fd3f5d2151c1af3abde93b67
9. 0x3ffbbd8d309432d0032a93755ada21cc2d60b298f7bd9378566522f8fd2cb5a3
10. 0x68b9c13007eacffd2dc146b099ac237e3cce9c995bb23c895d088539fb9a0df0
11. 0xc99774cfa2126cb7b4c49d6b3fd2510795689e2dec7886bdb1a009218327ef2e
12. 0x08155d70132f82e370214fc5b72194dfa6f5e57670b7bcf74776e8418302897e
13. 0x4d2ee986a690e903126f449b4e9e62d5572b350357ab4496a83488949b131c29
14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae