CoinPayments

CoinPayments provides digital asset payment processing for merchants, reporting 14 years of operation, more than 250,000 merchants, over a million wallet users and more than 50 billion dollars of transaction volume processed. Its current emphasis is on security and compliance rather than on coin count.

Multi party computation for key handling is the substantive technical claim and it addresses the failure that has destroyed several companies in this category. With MPC, a private key is never stored in one place or assembled in full, even during signing, and each transaction is authorised by several independent nodes. Compared with a conventional hot wallet, where one compromised server can drain everything, that removes the single point of failure that custodial crypto services keep discovering the hard way.

Multi user account delegation sounds mundane but follows the same reasoning. A business large enough to need several people managing payments should not be sharing one set of credentials, and a permissions system is what lets a finance team operate without every member holding full withdrawal rights.

In house blockchain intelligence covers the compliance side, screening transactions rather than relying entirely on a third party feed.