Visa & Stripe on Tempo

Visa and Stripe are no longer just testing stablecoin payments; they are now running validator nodes on Tempo, the payments blockchain launched by Stripe and Paradigm. (investor.visa.com) Visa said on April 14, 2026 that it had launched its Tempo validator in-house after six months of work with Tempo engineers. Visa, Stripe, and Zodia Custody are the first external validators named by Tempo. (investor.visa.com) A validator is the computer system that checks transactions and helps keep a blockchain’s ledger in sync, like a notary and timekeeper combined. Tempo says its chain is built for payments, with blocks that finalize in about 0.6 seconds and fees paid in United States dollar stablecoins instead of a separate gas token. (investor.visa.com) (tempo.xyz) (docs.tempo.xyz) Tempo is aimed at remittances, global payouts, payroll, embedded finance, and machine-to-machine payments, which are transactions made automatically by software or devices. Its documentation says the public testnet opened on December 9, 2025, and the mainnet is now live. (docs.tempo.xyz) (tempo.xyz) Stripe has been wiring Tempo into its own products for weeks. On March 25, 2026, Stripe added “tempo” as a supported network value in its crypto payments API, meaning merchants using Stripe can now see when a customer paid over Tempo. (docs.stripe.com) The push fits a broader Stripe strategy around stablecoins. Stripe said in its 2025 annual update that it acquired Bridge in 2025, saw Bridge’s volume more than quadruple, and unveiled Tempo in September 2025 as a blockchain purpose-built for payments. (stripe.com) Visa has been moving in the same direction through cards and settlement infrastructure. In a separate March 2025 announcement, Visa and Bridge said developers could issue stablecoin-linked Visa cards in Latin America, letting customers spend stablecoin balances at more than 150 million merchant locations that accept Visa. (stripe.com) Tempo says it was incubated by Stripe and Paradigm and designed with input from large financial and technology companies, including Visa. Its roadmap calls for a permissionless validator set later, but the network is starting with a smaller group of institutional operators. (tempo.xyz) (docs.tempo.xyz) That leaves the immediate test in plain view: whether a blockchain built for stablecoins can handle the kind of payment volume and reliability that Visa and Stripe already manage off-chain. For now, both companies have moved from advising the project to helping run it. (investor.visa.com) (tempo.xyz)