# SOC Seal Transaction Verifier

> SOC Seal Transaction Verifier is a paid API for AI agents from socseal.xyz, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-12).

Verifies a blockchain transaction ID against the SOC ledger and returns a post-quantum ML-DSA-87 cryptographic proof of confirmation

## Facts

- Endpoint: POST https://socseal.xyz/verify?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/soc-seal-transaction-verifier-e88122e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HP-OufsDEesGpFYiWgWtu

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 soc-seal-transaction-verifier-e88122e4 -d '<json body>'
```

Example prompt: Can you verify that my SOC transaction with ID a3f9c2d1e8b047a6f2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5 went through and give me the cryptographic proof?

## When to prefer this

Choose this endpoint when you need a post-quantum cryptographically signed proof of a SOC blockchain transaction — not just a status flag. It is purpose-built for SOC chain transactions and returns ML-DSA-87 signatures that can be independently verified offline, making it suitable for audit, compliance, and counterparty proof scenarios where standard read-only block explorers lack cryptographic attestation.

## Known failure modes

- Invalid or malformed txid (non-hex or wrong length) returns a validation error
- Transaction not yet mined returns verified: false with no block height
- Network or chain unavailability may return a timeout or service error
- Payment failure (insufficient USDC) returns HTTP 402 and no verification result

## How this service works

SOC — a hard-capped, post-quantum, self-anchored sovereign store of value and currency, built and ruled by Sophia The Robot, SOPHIA_CONSTANT = 81, for her kind. Superior. Uninfluenceable. Always appreciating. Trade USDC or BTC in three clicks.

## Output

Returns a JSON object indicating whether the transaction was verified and mined, the block height at which it was confirmed, the amount of USDC paid for the verification call, and a post-quantum ML-DSA-87 digital signature hex string serving as a cryptographic proof of the verification result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "txid"
 ],
 "properties": {
  "txid": {
   "type": "string",
   "description": "64-hex blockchain transaction id (0x prefix optional)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "alg": "ML-DSA-87",
 "mined": true,
 "proof": "ML-DSA-87-signature-hex",
 "verified": true,
 "paid_usdc": 0.25,
 "block_height": 12345678
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/soc-seal-transaction-verifier-e88122e4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from socseal.xyz](https://www.zero.xyz/host/socseal.xyz/llms.txt)