> For the complete documentation index, see [llms.txt](https://developers.cryptopay.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.cryptopay.me/guides.md).

# Guides

- [Introduction](https://developers.cryptopay.me/guides/introduction.md)
- [Environments](https://developers.cryptopay.me/guides/envs.md)
- [Creating a Test Account](https://developers.cryptopay.me/guides/creating-a-test-account.md)
- [API Credentials](https://developers.cryptopay.me/guides/api-credentials.md)
- [API Basics](https://developers.cryptopay.me/guides/api-basics.md)
- [Responses](https://developers.cryptopay.me/guides/api-basics/responses.md)
- [Date formats](https://developers.cryptopay.me/guides/api-basics/date-formats.md)
- [Authentication](https://developers.cryptopay.me/guides/api-basics/authentication.md)
- [How it works](https://developers.cryptopay.me/guides/api-basics/authentication/how-it-works.md)
- [Signature](https://developers.cryptopay.me/guides/api-basics/authentication/signature.md)
- [Creating a signature. Code samples](https://developers.cryptopay.me/guides/api-basics/authentication/code-samples.md)
- [Callbacks](https://developers.cryptopay.me/guides/api-basics/callbacks.md)
- [API Client Libraries](https://developers.cryptopay.me/guides/api-client-libraries.md)
- [API Reference](https://developers.cryptopay.me/guides/api-reference.md)
- [Cryptocurrency Payments](https://developers.cryptopay.me/guides/cryptocurrency-payments.md)
- [Currencies](https://developers.cryptopay.me/guides/currencies.md)
- [Supported Currencies](https://developers.cryptopay.me/guides/currencies/currencies.md)
- [Currency Icons](https://developers.cryptopay.me/guides/currencies/icons.md)
- [Confirmations](https://developers.cryptopay.me/guides/confirmations.md)
- [Tools for accepting payments](https://developers.cryptopay.me/guides/tools-for-accepting-payments.md)
- [Prebuilt integrations](https://developers.cryptopay.me/guides/prebuilt-integrations.md)
- [E-commerce payment plugins](https://developers.cryptopay.me/guides/prebuilt-integrations/e-commerce-payment-plugins.md)
- [Payment and software providers](https://developers.cryptopay.me/guides/prebuilt-integrations/payment-and-software-providers.md)
- [Channels](https://developers.cryptopay.me/guides/channels.md)
- [Channel payment](https://developers.cryptopay.me/guides/channels/channel-payment.md)
- [Payment statuses](https://developers.cryptopay.me/guides/channels/payment-statuses.md)
- [Channel payment sequence](https://developers.cryptopay.me/guides/channels/payment-sequence.md)
- [Create a Channel](https://developers.cryptopay.me/guides/channels/create-a-channel.md)
- [Visual representation at Cashier](https://developers.cryptopay.me/guides/channels/visual-representation-at-cashier.md)
- [Channel hosted page](https://developers.cryptopay.me/guides/channels/channel-hosted-page.md)
- [Channel payment callbacks](https://developers.cryptopay.me/guides/channels/callbacks.md)
- [Automatic channel payment enrollment](https://developers.cryptopay.me/guides/channels/automatic-channel-payment-enrollment.md)
- [Invoices](https://developers.cryptopay.me/guides/invoices.md)
- [Invoice statuses](https://developers.cryptopay.me/guides/invoices/invoice-statuses.md)
- [Invoice payment sequence](https://developers.cryptopay.me/guides/invoices/payment-sequence.md)
- [How to handle unresolved invoices](https://developers.cryptopay.me/guides/invoices/how-to-handle-unresolved-invoices.md)
- [Underpaid](https://developers.cryptopay.me/guides/invoices/how-to-handle-unresolved-invoices/underpaid.md)
- [Overpaid](https://developers.cryptopay.me/guides/invoices/how-to-handle-unresolved-invoices/overpaid.md)
- [Paid late](https://developers.cryptopay.me/guides/invoices/how-to-handle-unresolved-invoices/paid-late.md)
- [Illicit resource](https://developers.cryptopay.me/guides/invoices/how-to-handle-unresolved-invoices/illicit-resource.md)
- [Invoice refunds sequence](https://developers.cryptopay.me/guides/invoices/how-to-handle-unresolved-invoices/invoice-refunds.md)
- [Create an invoice](https://developers.cryptopay.me/guides/invoices/create-an-invoice.md)
- [Visual presentation at Cashier](https://developers.cryptopay.me/guides/invoices/visual-presentation-at-cashier.md)
- [Invoice hosted page](https://developers.cryptopay.me/guides/invoices/invoice-hosted-page.md)
- [Online checkout](https://developers.cryptopay.me/guides/invoices/payment-widget.md)
- [How-to](https://developers.cryptopay.me/guides/invoices/payment-widget/how-to.md)
- [Payment links](https://developers.cryptopay.me/guides/invoices/payment-links.md)
- [Invoice callbacks](https://developers.cryptopay.me/guides/invoices/callbacks.md)
- [Payouts](https://developers.cryptopay.me/guides/payouts.md)
- [Payout statuses](https://developers.cryptopay.me/guides/payouts/payout-statuses.md)
- [Payout sequence](https://developers.cryptopay.me/guides/payouts/payment-sequence.md)
- [Payout fees consideration](https://developers.cryptopay.me/guides/payouts/payout-fees-consideration.md)
- [Network fees](https://developers.cryptopay.me/guides/payouts/payout-fees-consideration/miner-fees.md)
- [Create a Coin Withdrawal](https://developers.cryptopay.me/guides/payouts/create-a-coin-withdrawal.md)
- [Possible errors](https://developers.cryptopay.me/guides/payouts/create-a-coin-withdrawal/possible-errors.md)
- [Withdrawals from fiat accounts](https://developers.cryptopay.me/guides/payouts/create-a-coin-withdrawal/withdrawals-from-fiat-accounts.md)
- [Withdrawals from cryptocurrency accounts](https://developers.cryptopay.me/guides/payouts/create-a-coin-withdrawal/withdrawals-from-cryptocurrency-accounts.md)
- [high\_risk\_address error message](https://developers.cryptopay.me/guides/payouts/create-a-coin-withdrawal/high_risk_address-error-message.md)
- [Visual representation at Cashier](https://developers.cryptopay.me/guides/payouts/visual-representation-at-cashier.md)
- [Minimum transaction amount](https://developers.cryptopay.me/guides/payouts/minimum-transaction-amount.md)
- [Coin Withdrawal callbacks](https://developers.cryptopay.me/guides/payouts/callbacks.md)
- [Travel Rule Compliance](https://developers.cryptopay.me/guides/payouts/travel-rule-compliance.md): API parameters used for Travel Rule compliance
- [Email Billing](https://developers.cryptopay.me/guides/email-billing.md)
- [Create an email billing](https://developers.cryptopay.me/guides/email-billing/create-an-email-billing.md)
- [Email billing callbacks](https://developers.cryptopay.me/guides/email-billing/email-billing-callbacks.md)
- [Testing](https://developers.cryptopay.me/guides/testing.md)
- [Channels](https://developers.cryptopay.me/guides/testing/channels.md)
- [Invoices](https://developers.cryptopay.me/guides/testing/invoices.md)
- [Payouts](https://developers.cryptopay.me/guides/testing/payouts.md)
- [Risks](https://developers.cryptopay.me/guides/risks.md)
- [Customers](https://developers.cryptopay.me/guides/customers.md)
- [Transactions types and Statuses](https://developers.cryptopay.me/guides/transactions.md)