Column, the bank-as-infrastructure provider co-founded by Plaid co-founder William Hockey, has integrated USDC and USDT into its core banking ledger across multiple blockchain networks. A single API allows fintech clients to send and receive stablecoins alongside traditional payment rails, convert them into fiat currency and complete settlement on Column’s in-house ledger. Settlement operates 24/7/365, with Solana as the default network and Ethereum and other chains also supported. Column says the setup requires no prefunding, third-party intermediaries or separate liquidity management, and is already processing transactions for Brex, Ramp, Mercury, Bilt, Slash and Kapital. Stablecoin flows through the system already reach tens of billions of dollars annually, according to Column. The company also announced full-stack card issuing, global banking accounts and multicurrency accounts. Its California bank charter gives it direct control over compliance and operations while combining stablecoin and traditional payment rails through one bank integration.