Evidence row 123800

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://verdict.kechlab.com/v1/grounding"
    ]
  ],
  "name": "Verdict L402",
  "owner_address": "0xb36c56a749f81ffeb44a134082dd4744e1d254eb",
  "raw": {
    "accepts": [
      {
        "amount": "17300",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xb36c56A749f81FFeb44a134082DD4744E1d254Eb",
        "scheme": "exact"
      }
    ],
    "description": "Hallucination check for RAG: is a claim supported by the source text? Returns supported, unsupported, contradicted or uncertain with probabilities, so an agent can verify an answer before showing it.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "claim": "Customers have 30 days to ask for a refund.",
              "source": "Our refund period is 14 days after delivery."
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "mode": "grounding",
              "paid_sats": 20,
              "payment_hash": "x402:<sha256 hex>",
              "receipt": {
                "payload": {
                  "at": "<ISO 8601 time>",
                  "kid": "<signing key id>",
                  "mode": "grounding",
                  "payment_hash": "x402:<sha256 hex>",
                  "v": 1,
                  "verdict_sha256": "<sha256 hex of the verdict>"
                },
                "signature": "<base64url Ed25519 signature>"
              },
              "verdict": {
                "best_guess": "contradicted",
                "confidence": 0.96,
                "decision": "contradicted",
                "probabilities": {
                  "contradicted": 0.96,
                  "supported": 0.01,
                  "unsupported": 0.03
                },
                "rule": "uncertain if confidence is below 0.6"
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "claim": {
                      "description": "the claim to verify",
                      "type": "string"
                    },
                    "source": {
                      "description": "the reference text",
                      "type": "string"
                    }
                  },
                  "required": [
                    "source",
                    "claim"
                  ],
                  "type": "object"
                },
                "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": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-20T13:32:29.581Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-20T13:32:28.524Z"
    },
    "resource": "https://verdict.kechlab.com/v1/grounding",
    "serviceName": "Verdict L402",
    "tags": [
      "rag",
      "fact-check",
      "ai-agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Hallucination check for RAG: is a claim supported by the source text? Returns supported, unsupported, contradicted or uncertain with probabilities, so an agent can verify an answer before showing it."
}

What the leaf hashes

{"body":"482fb7efcc944397e2eef3847a14966fbe2b4a24b531a315f4336d09b839f8ed","id":123800,"kind":"listing","method":"baseline/1","observed_us":1793025623727602,"prev":null,"subject":"x402_bazaar:https://verdict.kechlab.com/v1/grounding","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.