# Blockchain Address Chain Identifier and Validator

> Blockchain Address Chain Identifier and Validator is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Identifies which blockchain network a given address belongs to and verifies whether it is well-formed

## Facts

- Endpoint: POST https://twin.unykorn.org/address-identify?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-address-chain-identifier-and-validator-15c14763
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p4eXBHAeteBbsxZzjszbp

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 blockchain-address-chain-identifier-and-validator-15c14763 -d '<json body>'
```

Example prompt: Can you tell me which blockchain this address belongs to and whether it's valid: 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf NK?

## When to prefer this

Use this endpoint when you have an unknown or user-supplied address string and need to determine both its blockchain network and format validity in a single call, especially in a multi-chain context where the user has not specified the network. Prefer this over chain-specific validators when the chain is unknown upfront.

## Known failure modes

- Malformed or empty address string returns an error or ok:false
- Ambiguous address strings that match no known chain format return unrecognized type
- Service unavailability returns HTTP 5xx
- Payment failure (x402 protocol) prevents request from being processed
- Addresses on unsupported or obscure chains may not be identified

## How this service works

Which chain does this address belong to, and is it well-formed — Genesis402 / UnyKorn Operator Network

## Output

Returns a JSON object indicating whether the address is valid (ok), the identified chain type, a receipt with transaction hash, USD amount charged, and receipt ID, and a generated_at timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "address": {
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "address-identify",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.002,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-address-chain-identifier-and-validator-15c14763/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)