# Unstoppable Finance (Iron) Addresses API

**Canonical:** https://apis.io/apis/unstoppable-finance/unstoppable-finance-addresses-api/  
**Provider:** Unstoppable Finance (Iron) — https://apis.io/providers/unstoppable-finance/  
**Base URL:** https://api.iron.xyz/api  
**Documentation:** https://docs.iron.xyz/overview

Unstoppable Finance (Iron) Addresses API is one of 9 APIs that [Unstoppable Finance (Iron)](https://apis.io/providers/unstoppable-finance/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Addresses. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

Wallet and bank account registration Every wallet address that interacts with Iron must be registered (linked) to a customer **before** it can be used in any flow — onramp, offramp, or swap. This is a regulatory requirement under the **Travel Rule**, which obliges Virtual Asset Service Providers to exchange originator and beneficiary information for crypto transfers. Iron supports two wallet types: - **Self-hosted wallets** — the customer controls the private key. Registration requires a signed proof-of-ownership message. - **Hosted wallets** — the wallet is custodied by another VASP (e.g. Coinbase, Kraken). Registration requires the VASP's DID so Iron can exchange travel-rule data with the custodian. Similarly, fiat bank accounts must be registered before they can receive offramp payouts.

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/unstoppable-finance/refs/heads/main/openapi/unstoppable-finance-addresses-api-openapi.yml
- **Documentation** — https://docs.iron.xyz/overview
- **APIReference** — https://docs.iron.xyz/reference-sandbox/addresses/register-a-self-attested-wallet-address
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/unstoppable-finance/refs/heads/main/apis.yml

## Other Unstoppable Finance (Iron) APIs (8)

- [Unstoppable Finance (Iron) Autoramp API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-autoramp-api/)
- [Unstoppable Finance (Iron) Currencies API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-currencies-api/)
- [Unstoppable Finance (Iron) Customer API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-customer-api/)
- [Unstoppable Finance (Iron) ExchangeRate API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-exchangerate-api/)
- [Unstoppable Finance (Iron) FeeProfiles API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-feeprofiles-api/)
- [Unstoppable Finance (Iron) Sandbox API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-sandbox-api/)
- [Unstoppable Finance (Iron) TermsAndConditions API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-termsandconditions-api/)
- [Unstoppable Finance (Iron) Webhooks API](https://apis.io/apis/unstoppable-finance/unstoppable-finance-webhooks-api/)

## Tags

Addresses

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/unstoppable-finance/unstoppable-finance-addresses-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/unstoppable-finance/.