Coinbase now handles close to $1 trillion in annual stablecoin transaction volume. To put that in perspective, that’s roughly the GDP of the Netherlands moving through a single crypto exchange every year, except it’s all denominated in dollar-pegged digital tokens.
The company also disclosed that it holds nearly $20 billion in USDC on its platform, making it one of the largest custodians of Circle’s flagship stablecoin. Combined with the rapid adoption of its x402 payment protocol, which has facilitated an estimated 160 million agentic transactions, Coinbase is quietly building what looks like the plumbing for the next generation of digital commerce.
The x402 protocol and the rise of machine payments
Here’s the thing about the x402 protocol: it’s not designed for humans clicking “buy” buttons. Launched in May 2025, x402 uses the HTTP 402 status code, a largely dormant piece of internet infrastructure originally reserved for “Payment Required” responses, to enable automatic micropayments. In English: machines can now pay other machines in USDC without any human intervention.
The protocol has already processed over 100 million transactions, with recent estimates pushing that figure toward 160 million.
