# CuseTheJuice Hash Anchor Verify

> CuseTheJuice Hash Anchor Verify is a paid API for AI agents from app.cusethejuice.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Verifies a file's SHA-256 hash against a previously anchored Base blockchain transaction calldata to confirm integrity

## Facts

- Endpoint: POST https://app.cusethejuice.com/api/bots/hash-anchor/confirm
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/app-cusethejuice-com-6809e238
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MOSL9rlq0maEoBWkZKdKM

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability app-cusethejuice-com-6809e238 -d '<json body>'
```

Example prompt: Can you verify that the file with SHA-256 hash abc123def456... and size 204800 bytes matches what was anchored on Base in transaction 0xdeadbeef...? It costs $0.01 and I want to confirm it hasn't been altered.

## When to prefer this

Use this endpoint when you need to verify that a previously anchored file or document has not been tampered with, by confirming its SHA-256 hash against Base blockchain calldata. Prefer this over generic hash comparison when you need immutable, on-chain proof of integrity paid for via x402/USDC microtransactions.

## Known failure modes

- Hash mismatch — file has been modified since anchoring
- Transaction not found on Base — invalid or non-existent tx ID
- Missing sizeBytes parameter — required for POST upload verification
- Payment failure via x402/Base USDC — insufficient funds or payment not accepted
- Malformed SHA-256 hash input
- Network error reaching Base RPC

## How this service works

CuseTheJuice agent APIs on Base USDC: email relay, spam and phishing checks, IP threat scoring, Base Notary hash anchors, and Jupiter Solana swap quotes. Hash anchor (verify): flat $0.01 per request. Verify file SHA-256 against Base tx calldata (sizeBytes required for POST upload). Pay with x402 (Base USDC). HTTP shape: extensions.bazaar on the 402. Catalog: https://app.cusethejuice.com/agents

## Output

Returns a confirmation of whether the provided SHA-256 hash matches the calldata stored in the specified Base blockchain transaction, effectively verifying file integrity and provenance at the time of anchoring.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "fileBase64"
     ],
     "properties": {
      "txHash": {
       "type": "string",
       "description": "Optional when txHash is in query; must match ?txHash= when set."
      },
      "filename": {
       "type": "string"
      },
      "fileBase64": {
       "type": "string",
       "description": "Base64-encoded file bytes"
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "result"
     ],
     "properties": {
      "error": {
       "type": "string"
      },
      "result": {
       "type": [
        "object",
        "null"
       ],
       "required": [
        "match",
        "sha256",
        "anchoredSha256",
        "txHash",
        "sizeBytes"
       ],
       "properties": {
        "match": {
         "type": "boolean"
        },
        "sha256": {
         "type": "string"
        },
        "txHash": {
         "type": "string"
        },
        "filename": {
         "type": "string"
        },
        "sizeBytes": {
         "type": "number"
        },
        "anchoredSha256": {
         "type": [
          "string",
          "null"
         ]
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "result"
 ],
 "properties": {
  "error": {
   "type": "string"
  },
  "result": {
   "type": [
    "object",
    "null"
   ],
   "required": [
    "match",
    "sha256",
    "anchoredSha256",
    "txHash",
    "sizeBytes"
   ],
   "properties": {
    "match": {
     "type": "boolean"
    },
    "sha256": {
     "type": "string"
    },
    "txHash": {
     "type": "string"
    },
    "filename": {
     "type": "string"
    },
    "sizeBytes": {
     "type": "number"
    },
    "anchoredSha256": {
     "type": [
      "string",
      "null"
     ]
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/app-cusethejuice-com-6809e238/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.cusethejuice.com](https://www.zero.xyz/host/app.cusethejuice.com/llms.txt)