General information
This section covers the fundamentals that apply across all BTC Direct integration methods: Unified Checkout, Widget, and API.
Before you start integrating, familiarize yourself with the currencies we support, the payment methods available to your users, and the wallet address requirements.
Key topics
Section titled “Key topics”- Payment methods: which payment methods are available and how to discover them via the API.
- Supported currencies: all cryptocurrency pairs, fiat currencies, and chain information.
- Wallet addresses: address formats per chain, validation rules, and when a wallet address is required.
- CAIP-19 support: how to use CAIP-19 identifiers as an alternative to currency codes.
- Webhooks: receive real-time order and user event notifications.
- FAQ: environments, authentication, and common questions.
API environments
Section titled “API environments”| Environment | Base URL |
|---|---|
| Production | https://api.btcdirect.eu |
| Sandbox | https://api-sandbox.btcdirect.eu |
Contact your account manager for sandbox access and API credentials.