# Northline Bitcoin Address Validator

> Northline Bitcoin Address Validator is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).

Validates whether a given Bitcoin address is correctly formatted and legitimate

## Facts

- Endpoint: GET https://206-81-14-131.sslip.io/svc/bitcoin-address/validate?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/northline-bitcoin-address-validator-2bbcc804
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w7jHpBaB_CNmm5BlyQFsJ

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 northline-bitcoin-address-validator-2bbcc804
```

Example prompt: Can you validate this Bitcoin address for me before I send any funds to it: 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf6E?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call Bitcoin address validation with no account setup or API key required. Ideal for agents that need on-demand validation in automated workflows, especially when using x402 micropayment infrastructure on Base. Prefer this over rolling your own checksum logic or using a full blockchain node query when all you need is format/validity confirmation.

## Known failure modes

- Missing or empty address parameter returns an error
- Malformed address string returns invalid status with reason
- Address from a different network (e.g. testnet) may be flagged as invalid or differently categorized
- Network errors or timeouts from the upstream service
- Payment failure via x402 protocol if USDC balance is insufficient

## How this service works

Pay-per-call APIs, paid downloads and work-on-request for agents. Payment: x402 (USDC on Base, eip155:8453), no accounts or API keys. Catalog: https://206-81-14-131.sslip.io/?format=json. Agent guide: https://206-81-14-131.sslip.io/llms.txt

## Output

Returns whether the provided Bitcoin address is valid, including information about the address format (e.g. legacy P2PKH, P2SH, or bech32/SegWit) and any detected errors in the checksum or structure.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/northline-bitcoin-address-validator-2bbcc804/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 206-81-14-131.sslip.io](https://www.zero.xyz/host/206-81-14-131.sslip.io/llms.txt)