# PennyRail Crypto Multi-Hash

> PennyRail Crypto Multi-Hash is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-04).

Computes multiple cryptographic hashes over an input payload in a single call, returning proven hash digests

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/nano/crypto.hash-multi--proven-hash?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-crypto-multi-hash-1e07c208
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r58vuul1FFsWZVN6kRSGm

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 pennyrail-crypto-multi-hash-1e07c208 -d '<json body>'
```

Example prompt: Can you hash this data object with multiple crypto algorithms at once and give me the proven digests? Here's the input: {"userId": "abc123", "timestamp": 1700000000, "action": "transfer"}.

## When to prefer this

Choose this endpoint when you need multiple cryptographic hash digests computed over a single data object in one round-trip, especially when a 'proven' attestation of the hash computation is required. Prefer this over rolling your own hashing when you need a verifiable, third-party attested digest for audit, integrity, or blockchain anchoring workflows and want to avoid managing multiple hash libraries client-side.

## Known failure modes

- Missing or malformed 'input' field returns a validation error
- Empty input object may produce hashes of an empty structure rather than meaningful data
- Unsupported hash algorithm parameters may silently fall back or error
- Network timeout if the payload is extremely large
- Payment failure (402) if USDC micropayment is not included or insufficient

## How this service works

Machine-readable settlement service

## Output

Returns an object containing multiple cryptographic hash digests (e.g. SHA-256, SHA-512, or other supported algorithms) computed over the input payload, along with proof metadata confirming the computation was performed correctly.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-crypto-multi-hash-1e07c208/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)