Evidence row 3966819

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.vextorium.com/v1/extractive-summary"
    ]
  ],
  "name": "Extractive summary",
  "owner_address": "0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
        "scheme": "exact"
      },
      {
        "amount": "0.003",
        "asset": "524C555344000000000000000000000000000000",
        "extra": {
          "areFeesSponsored": false,
          "invoiceId": "360D554EC42641868F4759E06EF8F169",
          "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 300,
        "network": "xrpl:0",
        "payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
        "scheme": "exact"
      },
      {
        "amount": "2310",
        "asset": "XRP",
        "extra": {
          "areFeesSponsored": false,
          "invoiceId": "D33F8F2A26E84800AD720227E22E2D04",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 300,
        "network": "xrpl:0",
        "payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
        "extra": {
          "assets": [
            {
              "address": "0x0b2c639c533813f4aa9d7837caf62653d097ff85",
              "authorizationVersions": [
                "1",
                "2"
              ],
              "decimals": 6,
              "symbol": "USDC"
            }
          ],
          "minValiditySeconds": 604800,
          "name": "GatewayWalletBatched",
          "verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
          "version": "1"
        },
        "maxTimeoutSeconds": 604900,
        "network": "eip155:10",
        "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3600000000000000000000000000000000000000",
        "extra": {
          "assets": [
            {
              "address": "0x3600000000000000000000000000000000000000",
              "authorizationVersions": [
                "1",
                "2"
              ],
              "decimals": 6,
              "symbol": "USDC"
            },
            {
              "address": "0x171a4217b86a807a64eb94757db6849fb4bdbaa0",
              "authorizationVersions": [
                "2"
              ],
              "decimals": 8,
              "symbol": "cirBTC"
            },
            {
              "address": "0xbef5f6d51cb62b58e6a8f77868681825c6fe21c1",
              "authorizationVersions": [
                "2"
              ],
              "decimals": 6,
              "symbol": "EURC"
            }
          ],
          "minValiditySeconds": 604800,
          "name": "GatewayWalletBatched",
          "verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
          "version": "1"
        },
        "maxTimeoutSeconds": 604900,
        "network": "eip155:5042",
        "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
        "scheme": "exact"
      }
    ],
    "description": "Extractive summary without AI: picks the most representative sentences (term frequency and position scoring) and returns them in original order, with the reduction percentage. Deterministic and instant.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "sentences": 2,
              "text": "Artificial intelligence agents are transforming the digital economy. AI agents pay for data with micropayments. The x402 protocol lets agents pay per call without accounts. Many companies already offer pay-per-use APIs for agents. USDC micropayments make this business model viable."
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "language": "en",
              "note": "Extractive summary (it copies sentences from the original, it does not rewrite them).",
              "original_sentences": 5,
              "reduction_pct": 54.3,
              "summary": "Artificial intelligence agents are transforming the digital economy. The x402 protocol lets agents pay per call without accounts.",
              "summary_sentences": 2
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "sentences": {
                      "description": "Sentences to keep (default 5)",
                      "type": "integer"
                    },
                    "text": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "text"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "language": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "note": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "original_sentences": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "reduction_pct": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "summary": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "summary_sentences": {
                      "type": [
                        "number",
                        "null"
                      ]
                    }
                  },
                  "type": [
                    "object",
                    "null"
                  ]
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-06T23:42:21.278Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-11-06T23:42:21.034Z"
    },
    "resource": "https://api.vextorium.com/v1/extractive-summary",
    "serviceName": "Extractive summary",
    "tags": [
      "summary",
      "nlp",
      "extractive",
      "text",
      "tldr"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Extractive summary without AI: picks the most representative sentences (term frequency and position scoring) and returns them in original order, with the reduction percentage. Deterministic and instant."
}

What the leaf hashes

{"body":"1a696f86dcf00763f28bb12c13073c933f4f0763514df0dd3e995d634c93a085","id":3966819,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083397440757,"prev":3762686,"subject":"x402_bazaar:https://api.vextorium.com/v1/extractive-summary","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

1. 0x1948a485551fe83b94e3918b0b54bcbaa323589f7c0b3439a137b831f133e83c
2. 0x23c31fb680a7a743a5b58acdb4ffd803f82c0ed886457188bd832359c1a5dedf
3. 0x40812587127e5d4fa00bf7bf0b62463b4f9a0c1c41094ab998465cb785596551
4. 0x01f2b5efa9d03f945fdae7fb9daab024520a06a36b8cdecc3c5af7c9c3891068
5. 0x92f0a90836bf3a9a99e59342914e609104ef89456dc4d0ad57f0b239f35184fb
6. 0xf2f462dccd7ab54ecbf39ca70222d60ba0276ee89cbc48bab6d05d51045b524b
7. 0x10a2f27c30baf61eefd56fcb8acb2dd5beb517373fc7fc5fc962f6b7327c76e4
8. 0x0c31e440c2172ac26286f129a79e162b6bddb9c6ab5f5806b01bb26c58bceb4d
9. 0x45e02eb1ebdb154c3288ddf3169aac6a5e983a7fc71d6239ab3ecc06cfda3b52
10. 0xef87f397ffa7c419559b8c1fbe13d6c2d53122016a2cb49235717ba748a199ea
11. 0x57386e706b6826bc93d202237871553f61bddaa590fc7660bb1a6b5983d064ee
12. 0x5e66ecfab97def5f0d2dbf8d476c99ca978066e2c988566f0a0cff517c34d700
13. 0x10098a8e53ad0238235972679790fca4168b24d877abf224a8392ea979b282ad
14. 0xfc9ab88d5cb08cae376d37d3f24517c7a2cd94f277b0d505932d5ac795e4c6be
15. 0x22002567dfb80a697b73b13f0cc7ab99ac0c0bd9ea84bf4883eeb09f86036e24
16. 0x80bdd907e4cabf074c5e8d919e88abbc805de47d0c5c142e281a67157f82926f
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa