CoinPayments has been processing crypto payments since 2013 and remains one of the broadest multi-coin gateways available, accepting hundreds of cryptocurrencies including obscure altcoins most processors skip. It classifies adult merchants as high-risk and may apply higher fee tiers, but it does accept them - the base rate sits around 0.5%. Integration options include a shopping cart plugin library covering WooCommerce, Magento, and OpenCart.

The high-risk classification means support can be slower and account reviews more frequent. Operators should expect lighter documentation requirements than card processors, but the platform is not hands-off the way a fully non-custodial gateway is.