Stripe launched Tempo, a purpose-built Layer 1 blockchain for stablecoin payments, on March 18, 2026, backed by a $500 million Series A at a $5 billion valuation led by Greenoaks and Thrive Capital. The chain, co-developed with Paradigm, now counts Visa, Mastercard, UBS, DoorDash, Meta, Shopify, ...
"Stablecoins are room-temperature superconductors for financial services. Thanks to stablecoins, businesses around the world will benefit from significant speed, coverage, and cost improvements in the coming years." — Patrick Collison, CEO, Stripe
Stripe launched Tempo, a purpose-built Layer 1 blockchain for stablecoin payments, on March 18, 2026, backed by a $500 million Series A at a $5 billion valuation led by Greenoaks and Thrive Capital. The chain, co-developed with Paradigm, now counts Visa, Mastercard, UBS, DoorDash, Meta, Shopify, OpenAI, and Klarna among its design partners or active users. Stripe processes nearly $2 trillion in annual payment volume. It is now routing a growing share of that flow through stablecoin rails.
Simultaneously, Visa expanded its stablecoin settlement pilot to nine blockchains — including Tempo — with an annualized settlement run rate of $7 billion, up from $3.5 billion in December 2025. PayPal's PYUSD supply has reached approximately $3.4 billion and is live in 70 markets. The convergence of these three infrastructure plays marks the moment stablecoin payments moved from pilot programs to production-grade financial plumbing.
This report examines the architecture, economics, and competitive positioning of Stripe's Tempo against incumbent payment networks and rival stablecoin infrastructure, and assesses what the entry of $2 trillion-scale payment processors means for on-chain settlement.
Tempo is a Layer 1 blockchain built on Paradigm's Reth, a high-performance Ethereum execution client. It uses a Byzantine Fault Tolerance (BFT) consensus mechanism that produces blocks with sub-second finality — approximately 0.6 seconds — with no reorganizations. The network claims throughput exceeding 100,000 transactions per second, compared to Ethereum's approximately 20 TPS and Solana's practical throughput of several thousand TPS.
The chain is EVM-compatible, allowing developers to deploy standard Ethereum smart contracts. However, several design choices distinguish it from general-purpose blockchains:
At launch, validators include Stripe, Visa, and Zodia Custody. The network plans to transition to a permissionless validator model, though no timeline has been disclosed.
Patrick and John Collison wrote in Stripe's 2026 annual letter: "With Tempo, businesses get dedicated payment lanes, sub-second finality, opt-in privacy, and interoperability with compliance and accounting systems. These features may sound prosaic, but they matter a great deal for infrastructure that supports real-world economic activity."
Stripe's stablecoin infrastructure did not emerge from a single product decision. It was assembled through acquisitions:
The vertical integration is deliberate. Stripe now controls the wallet layer (Privy), the orchestration layer (Bridge), and the settlement layer (Tempo). Combined with its existing merchant API infrastructure — used by millions of businesses — this creates a closed-loop system where stablecoin payments can flow from customer wallet to merchant bank account without leaving Stripe's infrastructure stack.
Adrien Duchâteau, Stripe's head of crypto go-to-market, described the ambition at the RWA Summit in Cannes in April 2026: the company aims to become an "AWS for money," providing programmable financial infrastructure that other businesses build on top of, rather than competing with them directly.
Tempo's design partner list reads like a cross-section of global commerce:
| Partner | Use Case | Status | |---------|----------|--------| | DoorDash | Stablecoin payouts to merchants across 40+ countries | Pilot announced April 2026 | | Meta | USDC payouts to creators via Polygon and Solana through Stripe | Live as of April 29, 2026 | | Visa | Anchor validator node; stablecoin settlement | Live | | Mastercard | Infrastructure partner | Design partner | | UBS | Infrastructure partner | Design partner | | Shopify | Stablecoin checkout acceptance | Design partner | | OpenAI | Machine payments for AI agents | Design partner | | Klarna | Stablecoin integration via Bridge | Design partner | | Revolut, Nubank | Fintech integration | Design partners |
DoorDash's integration is notable for its specificity. The company stated it will begin with payout flows "where faster and cheaper settlement creates the most value" — merchant settlements in markets where traditional banking rails impose multi-day delays and significant fees. Stablecoin settlement on Tempo completes in seconds.
Meta's creator payout program, while routed through Polygon and Solana rather than Tempo directly, uses Stripe as the payment processor. Meta targets 160 markets for stablecoin-based creator payments.
Stripe is not alone. Two other infrastructure incumbents are making parallel — and in some cases overlapping — bets on stablecoin payments.
Visa expanded its stablecoin settlement pilot on April 29, 2026, adding five new blockchains (Base, Polygon, Canton Network, Arc, and Tempo) to its existing support for Ethereum, Solana, Avalanche, and Stellar. The annualized stablecoin settlement run rate hit $7 billion, growing 50% quarter-over-quarter and doubling since December 2025. Visa now operates more than 130 stablecoin-linked card programs in over 50 countries.
Visa's approach differs from Stripe's. Rather than building its own chain, Visa operates validator nodes across multiple blockchains — including Tempo. It functions as a settlement layer consumer, not a settlement layer provider. This multi-chain posture hedges against any single chain becoming dominant.
PayPal issued its own stablecoin, PYUSD, which reached a circulating supply of approximately $3.4 billion as of May 2026 (down from a peak above $4 billion in April). PayPal expanded PYUSD access to 70 markets on March 18, 2026. In April, PayPal restructured into three business units, creating a dedicated "Payment Services & Crypto" division that houses PYUSD alongside merchant processing.
PayPal's model is fundamentally different from both Stripe and Visa. By issuing its own stablecoin, PayPal captures the float — the interest earned on the reserve assets backing PYUSD — as direct revenue. According to industry estimates, PYUSD's supply grew 600% across 2025, though it has contracted slightly in recent weeks.
The three models represent distinct value-capture strategies:
| Company | Strategy | Value Capture | |---------|----------|---------------| | Stripe | Own the chain (Tempo) + orchestration (Bridge) | Transaction fees, infrastructure lock-in | | Visa | Multi-chain validator + card network integration | Settlement fees, card interchange | | PayPal | Issue own stablecoin (PYUSD) | Float revenue, closed-loop payments |
Alongside Tempo's mainnet launch, Stripe and Tempo co-published the Machine Payments Protocol (MPP), an open standard for autonomous machine-to-machine payments. MPP defines how AI agents and software services request, authorize, and settle payments programmatically, replacing ad hoc billing APIs with a single protocol.
Design partners for MPP include OpenAI and Anthropic. The protocol targets use cases where software agents autonomously purchase compute, data, or services — transactions that are too small, too frequent, or too fast for traditional payment rails.
This positions Tempo not only as infrastructure for human-initiated commerce but as a settlement layer for the emerging machine economy. Whether AI agent payment volume becomes material in the near term remains to be seen; current volumes are negligible. But the protocol's existence reflects Stripe's bet that programmable money requires programmable settlement.
The broader stablecoin market provides context for Tempo's launch:
Stripe itself processed $1.9 trillion in total payment volume in 2025, a 34% year-on-year increase. Bridge's stablecoin transaction volume quadrupled in the same period. The company has not disclosed what percentage of its total volume now flows through stablecoin rails.
The entry of Stripe, Visa, and PayPal into stablecoin infrastructure has several implications for the broader blockchain ecosystem:
1. Value migrates to the application layer. When a $2 trillion payment processor builds its own chain, the economic value shifts from the base layer (where validators extract fees) to the application layer (where Stripe captures margin on merchant services). Tempo's dollar-denominated fee structure explicitly subordinates chain economics to payment economics.
2. General-purpose chains face margin compression. Ethereum, Solana, and other chains currently process stablecoin transfers alongside all other transaction types. Tempo's reserved payment lanes offer a deterministic quality of service that general-purpose chains cannot guarantee during congestion events. If payment-heavy volume migrates to purpose-built chains, general-purpose chains lose a significant fee contributor.
3. The stablecoin issuer is not the winner. Circle (USDC) and Tether (USDT) provide the monetary unit, but Stripe, Visa, and PayPal capture the economic rent through transaction processing and infrastructure fees. The stablecoin itself is becoming a commodity input, not a profit center — except for issuers who capture float revenue (PayPal with PYUSD, and potentially Tether with USDT reserves).
4. Regulatory clarity becomes a competitive moat. Stripe's Tempo launched weeks before the expected completion of U.S. market structure legislation. Companies with compliance infrastructure already in place — Stripe, Visa, PayPal — are positioned to operate immediately under new rules. Crypto-native competitors face longer onboarding timelines.
The launch of Tempo represents a structural shift in how stablecoin payment infrastructure is being built. Rather than adapting general-purpose blockchains for payments — the approach taken from 2020 to 2025 — Stripe built a chain where payments are the only use case that matters. Dollar-denominated fees, reserved blockspace, and integrated compliance tooling are design choices that sacrifice generality for fitness-to-purpose.
The competitive landscape now features three distinct models: Stripe's vertically integrated stack, Visa's multi-chain settlement network, and PayPal's proprietary stablecoin issuance. Each captures value at a different point in the payment flow. The question is no longer whether stablecoins will be used for mainstream payments. It is which infrastructure layer captures the margin.
Stripe's $2 trillion in annual payment volume gives Tempo a distribution advantage that no crypto-native chain possesses. Whether that advantage translates into network dominance depends on execution — specifically, whether Stripe can migrate meaningful transaction volume from traditional rails to Tempo without disrupting existing merchant relationships. The data so far (Bridge volume quadrupling, 30% month-over-month stablecoin growth) suggests the migration is underway.