Evidence row 555496

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://signal-engine-production-d88d.up.railway.app/v1/arena/vwap_reversion/DOGE"
    ]
  ],
  "name": "signal-engine-production-d88d.up.railway.app/v1/arena/vwap_reversion/DOGE",
  "owner_address": "0xca87adbcffdf6539a387783fef17a91dbabeef52",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "description": "Individual arena strategy signal",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "outputSchema": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "schema": {
              "properties": {
                "strategy_id": {
                  "default": "vwap_reversion",
                  "description": "Strategy identifier (path parameter)",
                  "enum": [
                    "ema_5_breakout",
                    "rsi_7_extremes",
                    "rsi_reversion_swing",
                    "vwap_reversion"
                  ],
                  "type": "string"
                },
                "symbol": {
                  "default": "BTC",
                  "description": "Crypto asset ticker (path parameter)",
                  "enum": [
                    "BTC",
                    "ETH",
                    "SOL",
                    "DOGE"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "strategy_id",
                "symbol"
              ],
              "type": "object"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "hold_time_sec": 300,
              "reasoning": "Bollinger band squeeze with volume expansion",
              "score": 0.82,
              "signal": "long",
              "sl_pct": 0.008,
              "strategy_id": "vwap_reversion",
              "strategy_name": "VWAP Reversion",
              "symbol": "BTC",
              "tp_pct": 0.015
            },
            "type": "json"
          }
        },
        "payTo": "0xCa87aDbCffdf6539A387783fEF17A91dbaBEEF52",
        "resource": "https://signal-engine-production-d88d.up.railway.app/v1/arena/vwap_reversion/DOGE",
        "scheme": "exact"
      }
    ],
    "description": "Individual arena strategy signal",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "schema": {
              "properties": {
                "strategy_id": {
                  "default": "vwap_reversion",
                  "description": "Strategy identifier (path parameter)",
                  "enum": [
                    "ema_5_breakout",
                    "rsi_7_extremes",
                    "rsi_reversion_swing",
                    "vwap_reversion"
                  ],
                  "type": "string"
                },
                "symbol": {
                  "default": "BTC",
                  "description": "Crypto asset ticker (path parameter)",
                  "enum": [
                    "BTC",
                    "ETH",
                    "SOL",
                    "DOGE"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "strategy_id",
                "symbol"
              ],
              "type": "object"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "hold_time_sec": 300,
              "reasoning": "Bollinger band squeeze with volume expansion",
              "score": 0.82,
              "signal": "long",
              "sl_pct": 0.008,
              "strategy_id": "vwap_reversion",
              "strategy_name": "VWAP Reversion",
              "symbol": "BTC",
              "tp_pct": 0.015
            },
            "type": "json"
          }
        },
        "schema": {
          "output": {
            "properties": {
              "hold_time_sec": {
                "description": "Suggested hold time in seconds",
                "type": "integer"
              },
              "reason": {
                "description": "Present when signal is null (e.g. no_signal, no_context)",
                "type": "string"
              },
              "reasoning": {
                "type": "string"
              },
              "score": {
                "maximum": 1,
                "minimum": 0,
                "type": "number"
              },
              "signal": {
                "enum": [
                  "long",
                  "short"
                ],
                "nullable": true,
                "type": "string"
              },
              "sl_pct": {
                "description": "Stop-loss percentage",
                "type": "number"
              },
              "strategy_id": {
                "type": "string"
              },
              "strategy_name": {
                "type": "string"
              },
              "symbol": {
                "type": "string"
              },
              "tp_pct": {
                "description": "Take-profit percentage",
                "type": "number"
              }
            },
            "required": [
              "strategy_id",
              "symbol"
            ]
          }
        }
      }
    },
    "lastUpdated": "2026-10-22T13:45:11.463Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-22T13:45:11.253Z"
    },
    "resource": "https://signal-engine-production-d88d.up.railway.app/v1/arena/vwap_reversion/DOGE",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Individual arena strategy signal"
}

What the leaf hashes

{"body":"55c89acc23eade6c41dabfa96a0f76c6dc564a7c3ec2a201177129e1b5407884","id":555496,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133799515858,"prev":121311,"subject":"x402_bazaar:https://signal-engine-production-d88d.up.railway.app/v1/arena/vwap_reversion/DOGE","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x58bae686dd729d3aee6e0103cbd0ec912073830c8088e8a17a6fd57f3c0d1a53
2. 0x2c77980a58f1609ab74bf5b6e212b4c1c58841effd8d05c6b6784092760bbaeb
3. 0x9707e174826729b1712364b60c1d7b4b4eb2bf0ff521315ccc4363a7e1eaf543
4. 0x23c813dafe9308f173a8b1fbec68820b6b658c8577280010ad59c83c53a4ff47
5. 0x1f6c02276d5b3796ff7bfa40b1309d4c11bf2a488018c8c6cf79df26daa24227
6. 0x9a8f8c48be9d2087b77d96ddefeab12804a4d9f2a102ad0eff6a0ff1f700cd68
7. 0xd9b73803b68f71b800a7c79594d14dab5cacb1c547d3559d1995e86fe94776a5
8. 0xa28b87ff4e5475164eb3faefff9044407c1e2e6434b18366d8ee24512cffef97
9. 0xfa4b5aa4100df056f9c16245338d244dde3924af80180971d656e612eea3aff6
10. 0x4b7c11c4490deca87cecc8066e3eb2b10f5829522d2ca6e53f1f1a7172ec532e
11. 0x095b40edf800595a91733b7d7641dc11c53f74bc29c345d97d171068bd13ee53
12. 0x6f9c2e17fd073d07da42da76c8ca2f200b30027f0378b0d9628f8fac6f48cd16
13. 0x5b3213451efe1e2950dd287afaede00cc8a45dfd9721ef9b3d698bde1eeb9909
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4