Stripe and Paradigm have launched Tempo, a Layer 1 blockchain that fundamentally changes the rules of stablecoin transfers. This isn't just another blockchain project. It's a systematic attack on the incumbent payment infrastructure, executed by a team that knows how to build at scale, backed by the world's largest financial players.
Tempo solves critical problems that have hampered enterprise blockchain adoption: speed, transaction segregation, and predictable costs. With over 100,000 transactions per second (TPS) and sub-second finality, this is the first blockchain infrastructure for stablecoins operating at this performance level. And it's currently in private testnet with global partners including Visa, Deutsche Bank, OpenAI, and Shopify.
The Problem. Performance and Predictability
Current blockchain infrastructure wasn't built specifically for payments. Ethereum, Solana, and others were designed for general-purpose smart contracts, DeFi protocols, NFT marketplaces, and decentralized applications. They excel at these use cases. But when payment transactions compete for block space with NFT minting, gaming applications, and complex DeFi operations, the result is unpredictable fees and occasional congestion. This isn't a flaw, it's a natural consequence of their design priorities. Enterprise payment infrastructure simply requires different architectural trade-offs.
XRP's model uses their native token as a bridge currency for bank-to-bank transfers. This approach introduces certain trade-offs. Banks must hold a third-party asset with price volatility, navigate regulatory considerations around utility token classification, and operate within a protocol they don't control. The multi-year SEC legal proceedings highlighted regulatory uncertainties that can affect institutional adoption.
Ethereum and Solana support various transaction types, but payment operations share block space with DeFi protocols, NFTs, and other applications, leading to variable fee structures. During periods of high network activity, gas costs can spike significantly, creating budgeting challenges for enterprises processing high transaction volumes.
Tempo proposes dedicated infrastructure for stablecoin transfers, featuring isolated payment lanes (separate mempool), 100,000+ TPS throughput, sub-second finality, and transaction fees paid directly in stablecoins.
The Technology. Fundamental Transformation
Payment Lanes. Isolated Infrastructure for Stablecoins
Payment lanes are dedicated pathways that completely isolate payment transactions from other blockchain operations. This architectural separation ensures that payment processing doesn't compete for network resources with NFT minting, DeFi protocols, gaming applications, or other blockchain activities.
The technical implementation uses a dedicated mempool. The staging area where transactions wait before block inclusion, exclusively for payment operations. This "payment lane" optimizes how transactions propagate through the network and reach finality, potentially handling different transaction types through separate processing pathways to prevent any performance interference.
For enterprises managing millions in daily transactions, this architectural isolation delivers consistent performance regardless of activity in other parts of the blockchain. Transaction costs remain stable and denominated in USD terms through stablecoins. Network congestion from unrelated activities cannot impact payment processing speed or costs.
The practical impact. Enterprises can reliably plan operating costs and performance expectations without monitoring broader network conditions or competing for block space through variable gas auctions.
This differs from general-purpose blockchains where payment transactions must compete with all other network activities. Ethereum and Solana process payments alongside DeFi operations, NFT transactions, and smart contract executions in a shared mempool. When network demand increases from any application type, all transaction types experience higher costs and potential delays. Tempo's isolated architecture prevents this interference.
Sub-Second Finality. Technical Implementation
Traditional blockchains like Ethereum use probabilistic finality. Transactions typically receive initial confirmations within 12-15 seconds (one block), with most applications accepting transactions after 2-3 block confirmations (approximately 30-45 seconds). However, absolute economic finality takes approximately 12-15 minutes (about 64 blocks, representing two epochs in Ethereum's Proof of Stake system).
Tempo implements deterministic finality using Byzantine Fault Tolerant (BFT) consensus mechanisms. Once validators confirm a transaction, it achieves immediate and irrevocable finality. The transaction cannot be reversed or reorganized.
The process. Transaction initiation, payment lane routing, validator consensus round, instant finalization. Completing in under one second.
This performance is achievable through Tempo's Proof of Authority (PoA) consensus model. Instead of coordinating among thousands of unknown validators, the initial implementation uses a pre-selected set of institutional validators from trusted financial institutions. This PoA architecture, where validator authority derives from institutional reputation rather than token staking, enables consensus rounds to complete in milliseconds. Fewer validators with enterprise-grade infrastructure can reach transaction agreement far faster than networks with thousands of distributed validators.
This represents a design choice prioritizing immediate performance and enterprise requirements, with planned transition to permissionless validators in later phases.
Proof of Authority. Enterprise Validator Model
As mentioned, Tempo's initial PoA model uses a permissioned validator set expected to include design partners such as Deutsche Bank, Standard Chartered, and Visa. This consortium-based approach provides specific operational advantages.
Immediate performance capability. 100,000+ TPS from initial deployment. Regulatory compliance integration. Validators are regulated financial institutions with established compliance frameworks. Infrastructure reliability. Institutional-grade systems with professional operations and uptime guarantees.
The corresponding trade-off is initial centralization. Network governance and validation authority rest with the consortium of participating institutions rather than a broadly distributed community of independent validators.
However, this reflects strategic prioritization rather than a permanent limitation. Enterprise blockchain adoption requires predictable performance, regulatory compliance, and institutional counterparties that enterprises already trust and have existing relationships with. The published roadmap explicitly includes transitioning to permissionless Proof of Stake operation, where any party meeting technical and potentially regulatory requirements can become a validator.
The initial phase focuses on enterprise adoption and performance validation, with the PoA model enabling the sub-second finality described above. The roadmap includes subsequent transition to broader validator participation.
Gas Fees in Stablecoins. Single-Asset Transaction Model
Most blockchains require users to hold two separate assets for transactions. The asset being transferred and a native token for gas fees. On Ethereum, sending USDC requires USDC plus ETH for gas. On Solana, USDC plus SOL. This dual-asset requirement creates operational friction. Treasury departments must acquire, hold, and manage a volatile gas token simply to transfer stablecoins.
Tempo eliminates this requirement entirely. Transaction fees are paid in the same stablecoin being transferred. Sending USDC incurs fees paid in USDC. Sending USDT incurs fees paid in USDT.
This functionality is implemented through an Automated Market Maker (AMM) integrated at the protocol level. This protocol-level AMM automatically converts whatever stablecoin users pay into the denomination validators require for compensation.
From the user perspective, this simplifies the transaction process. Fees display in USD terms (e.g., $0.001 per transaction), paid in the user's chosen stablecoin, without requiring any additional steps or asset management.
This neutrality is strategically important. Tempo doesn't favor Circle's USDC over Tether's USDT over Stripe's USDB over any other compliant stablecoin. Every issuer has equal protocol-level support. This maximizes potential adoption. Each bank or financial institution can use their preferred stablecoin or even their own tokenized deposit instruments.
This contrasts with XRP's approach, where banks must acquire, hold, transfer, and convert XRP tokens, introducing additional steps including market spreads on purchases and sales, price volatility during holding periods, and treasury management complexity. Tempo's single-asset model eliminates these intermediate conversion requirements.
Reth. Technical Foundation
The technical foundation is Reth, Paradigm's open-source Rust implementation of an Ethereum execution client. Reth represents the fastest available Ethereum client implementation, combining Rust's memory safety and performance characteristics with full EVM compatibility.
EVM compatibility means existing Ethereum smart contracts and development tools can be used on Tempo with minimal modification. The migration path for applications or tooling from Ethereum to Tempo requires primarily configuration changes rather than code rewrites.
For Tempo's infrastructure, Reth provides proven, production-tested blockchain execution engine optimized for performance, then customized specifically for payment-focused use cases through the payment lane architecture and other modifications.
Transforming Digital Payment Rails. Infrastructure Development
Dankrad Feist. Ethereum Scaling Architecture Expertise
On October 17, 2025, Dankrad Feist announced he was joining Tempo as a senior engineer, transitioning from his full-time role at the Ethereum Foundation while maintaining advisory involvement in specific Ethereum initiatives.
Feist is a prominent figure in Ethereum development circles, known primarily for his work on scaling solutions. He joined the Ethereum Foundation in 2018 as a researcher, becoming a full-time core contributor in 2019. His primary contributions include Danksharding, the co-created Ethereum's sharding scaling approach which bears his name. PeerDAS (Peer Data Availability Sampling), pioneer of this data availability solution scheduled for implementation in Ethereum's Fusaka upgrade. Extensive work on Layer 1 scaling mechanisms, blob transactions for data availability, and user experience improvements in Ethereum protocols.
His stated reasoning for the transition. "I believe that the real world moment is now, and I want to make sure we do not miss this window to touch normal people's lives everywhere in the world."
His transition generated significant discussion within the cryptocurrency community. Vitalik Buterin, Ethereum's co-founder, publicly expressed support for Feist's decision. Other community members characterized it as a loss for open-source blockchain development in favor of corporate infrastructure projects.
Feist clarified his perspective. Tempo complements Ethereum rather than competing with it. He emphasized that open-source technology developed for Tempo can integrate back into the Ethereum ecosystem, and both projects share "permissionless ideals" as design principles. He will continue as a research advisor to the Ethereum Foundation, focusing on Layer 1 scaling, blob transactions, and user experience initiatives.
Technical Contribution to Tempo
Feist's expertise in Layer 1 blockchain scaling, sharding architectures, data availability mechanisms, and consensus protocols directly addresses Tempo's core technical challenges. Delivering 100,000+ transactions per second with sub-second finality while maintaining security properties and enabling eventual decentralization.
His work on Ethereum involved scaling a general-purpose blockchain with backward compatibility constraints and a massive existing ecosystem. At Tempo, he applies this knowledge to infrastructure designed specifically for payments from inception, without legacy system constraints.
Payment Infrastructure Context
Traditional payment infrastructure has remained largely unchanged for decades. SWIFT handles messaging but not actual fund transfers. ACH processes transactions in batches overnight. International wire transfers cost $25-50 and take hours to days. Card network settlements occur in T+2 or T+3 timeframes.
Blockchain technology has proposed improvements to these systems. Bitcoin was originally conceived as peer-to-peer electronic cash. Ethereum enabled programmable money and smart contracts. XRP positioned itself as a bridge currency for interbank transfers.
However, widespread adoption for routine payment transactions has remained limited. Bitcoin's transaction throughput (approximately 7 TPS) and price volatility limit payment use cases. Ethereum's transaction costs and variable confirmation times create challenges for high-volume payment processing. XRP's requirement that institutions use a third-party token introduces considerations around volatility management and treasury operations.
Tempo takes a specialized approach. Purpose-built infrastructure designed specifically for payment transactions, developed with financial institution participation from the initial design phase.
The Global Ecosystem. Institutional and Technology Participation
Banking and Payment Networks
Visa, operating one of the world's largest payment networks, participates as a design partner testing Tempo for B2B cross-border settlements and remittance applications.
Deutsche Bank and Standard Chartered bring traditional banking institutional credibility. Deutsche Bank represents European banking infrastructure and regulatory experience. Standard Chartered provides extensive Asia-Pacific market presence and cross-border payment expertise. Both institutions are testing tokenized deposit concepts and 24/7 settlement capabilities.
These institutions participate as design partners in the development phase and are expected to operate as validators in the network. This differs from traditional client-vendor relationships. Participants contribute to infrastructure design and will operate core network functions.
Revolut (45M+ users globally), Nubank (100M+ customers in Latin America), and Mercury (banking platform for startups) represent the digital financial services segment. Lead Bank provides traditional banking infrastructure integration experience.
E-Commerce and Platform Economy
Shopify operates e-commerce infrastructure for millions of online merchants globally. Their participation focuses on instant payout capabilities for merchants. Enabling real-time stablecoin transfers rather than traditional T+2 settlement cycles.
DoorDash represents on-demand service platforms and gig economy payment requirements. Testing includes instant payment capabilities for delivery drivers and restaurant partners, replacing batch payment processing with real-time settlement.
Coupang, a major e-commerce platform in South Korea, validates Tempo's relevance in Asian markets and provides perspective on regional payment requirements.
AI Research Organizations
OpenAI (developers of ChatGPT) and Anthropic (developers of Claude AI) participate focusing on emerging payment paradigms for AI systems.
The specific use case involves autonomous AI agents making payments independently. Potentially thousands of micropayments per hour for API calls, computational resources, data access, or other services. Current payment infrastructure cannot efficiently support this transaction volume and frequency due to transaction costs and settlement delays.
Tempo's technical specifications, sub-second finality and low transaction costs paid in stablecoins, could support high-frequency micropayments required for autonomous AI agent transactions.
Network Coverage
The participant constellation provides geographic and industry vertical distribution.
Geographic coverage. Europe (Deutsche Bank, Revolut). North America (Stripe, Shopify, DoorDash, Mercury, OpenAI, Anthropic). Latin America (Nubank). Asia-Pacific (Standard Chartered, Coupang).
Industry vertical coverage. Traditional banking institutions. Global payment networks. E-commerce platforms. Digital financial services and neobanks. Artificial intelligence research and applications.
Distribution potential. The combined user base reaches hundreds of millions of users globally. Stripe (100M+ merchant accounts). Visa (billions of cardholders). Nubank (100M+ customers). Shopify (millions of merchant stores). Revolut (45M+ users). OpenAI (hundreds of millions of API users).
Comparative Context. Different Approaches to Blockchain Payments
Understanding Tempo's design requires context of alternative approaches to blockchain-based settlement infrastructure.
XRP and RippleNet
XRP and RippleNet have operated since 2012, establishing market presence in blockchain-based interbank settlement. In XRP's operational model, banks using RippleNet for cross-border transfers with XRP as a bridge currency engage in a multi-step process. Acquiring XRP tokens through market purchases, holding XRP in treasury, transferring XRP across the ledger for settlement, and selling XRP tokens back to local currency at destination.
This process involves certain operational considerations. Price movements during the holding period between purchase and sale. Market spreads on buying and selling operations. Treasury management for volatile asset positions. Regulatory classification questions that the SEC addressed through legal proceedings concluded in 2023.
XRP's architecture uses their Unique Node List (UNL) validator system, processing approximately 1,500 transactions per second with 3-5 second settlement times.
Ethereum and Solana
Ethereum and Solana represent general-purpose blockchain platforms supporting diverse applications beyond payments. Ethereum processes approximately 15-20 transactions per second on its base layer, with transactions typically confirming in 12-15 seconds and most applications accepting finality after 30-45 seconds. Transaction fees are paid in ETH, requiring users to hold both the stablecoin being transferred and ETH for gas costs.
Solana offers higher throughput, processing several thousand transactions per second with sub-second confirmation times in practice. However, payment transactions share network resources with DeFi protocols, NFT operations, and other applications. Transaction fees are paid in SOL.
Both platforms excel at their design purpose. Supporting diverse decentralized applications, smart contracts, and programmable money. Payment transactions represent one use case among many, processed through the same infrastructure serving all other applications.
Tempo's Differentiated Model
Tempo's design addresses specific requirements of payment-focused infrastructure through several architectural choices.
Asset model. Instead of requiring a bridge token (XRP) or gas token (ETH, SOL), Tempo enables institutions to use existing fiat-backed stablecoins. USDC from Circle, USDT from Tether, USDB from Bridge, or potentially tokenized bank deposits. Transaction fees are paid in the same stablecoin being transferred.
Infrastructure participation. Rather than functioning as users of external protocols, financial institutions participate as validators in Tempo's Proof of Authority model. This provides governance participation and infrastructure ownership.
Transaction isolation. Payment operations process through dedicated lanes separate from other blockchain activities. This architectural separation prevents payment performance from being affected by congestion from DeFi protocols, NFT minting, or other applications.
Performance specifications. Tempo targets 100,000+ transactions per second with sub-second deterministic finality, enabled by the Proof of Authority consensus model with a smaller set of institutional validators.
Regulatory positioning. Stablecoins operate under developing regulatory frameworks with increasing clarity. The proposed GENIUS Act in the United States and MiCA regulations in the European Union provide defined parameters for stablecoin operation.
These design choices reflect optimization for enterprise payment requirements. Stable assets, predictable performance, infrastructure ownership, and integration with existing financial systems.
Project Status. Development Phase
As of Q4 2025, Tempo operates in private testnet phase. The infrastructure is functional and processing test transactions with design partner participation.
Design partners are validating specific use case implementations. Payroll processing (instant salary disbursements in stablecoins). Cross-border remittances (international transfers between different currencies and jurisdictions). B2B payments (enterprise invoicing and settlement). Agentic payments (autonomous AI system transactions). Merchant settlements (real-time payment to e-commerce sellers).
Performance validation includes stress testing the stated parameters. 100,000+ TPS throughput, sub-second finality, predictable fee structures denominated in USD terms.
The development roadmap includes public testnet (timeline not publicly specified), mainnet launch (timeline not publicly specified), validator transition (progressive shift from permissioned to permissionless validator participation), and integration completion (full connection with Stripe's payment infrastructure and Bridge's stablecoin platform).
Tempo is actively recruiting across engineering roles, partnership positions, and operations functions. Indicating preparation for production-scale deployment.
Leadership and Organizational Structure
Matt Huang. Chief Executive Officer
Matt Huang serves as CEO of Tempo while maintaining his role as co-founder and managing partner at Paradigm. Before Paradigm, he was a partner at Sequoia Capital.
Since 2021, Huang has held a board seat at Stripe. A seven-member board that includes Stripe's co-founders Patrick and John Collison and two representatives from Sequoia Capital.
Huang's background spans traditional venture capital (Sequoia Capital), cryptocurrency investment (Paradigm), and payments infrastructure (Stripe board member).
Patrick Collison. Stripe CEO and Strategic Sponsor
Patrick Collison co-founded Stripe in 2010 with his brother John. Over fifteen years, Stripe has grown to a $91.5 billion valuation and processes payments for millions of businesses globally across over 100 countries.
The company's cryptocurrency strategy has followed a deliberate progression. 2018 (discontinues Bitcoin payment support). 2021 (Matt Huang joins Stripe's board). 2024 (restarts cryptocurrency payment support). February 2025 (acquires Bridge for $1.1 billion). May 2025 (launches Stablecoin Financial Accounts). June 2025 (acquires Privy, supporting 75M+ wallets). September 2025 (announces Tempo blockchain development).
This represents systematic vertical integration. Bridge (stablecoin issuance and management) plus Privy (wallet infrastructure and key management) plus Tempo (blockchain settlement layer) plus Stripe (payment APIs and merchant services) equals integrated infrastructure spanning from blockchain protocol to merchant payment acceptance.
Dankrad Feist. Senior Engineer
Dankrad Feist joined Tempo on October 17, 2025, after serving as a researcher at the Ethereum Foundation since 2018. His Ethereum contributions include Danksharding (co-architect of Ethereum's sharding scaling design), PeerDAS (lead developer scheduled for Ethereum's Fusaka upgrade), scaling research (extensive work on Layer 1 blockchain scaling, blob transactions), and technical proposals (author of multiple Ethereum Improvement Proposals).
At Tempo, Feist serves as senior engineer focusing on blockchain architecture, consensus mechanisms, and scaling implementations. He maintains an advisory role at the Ethereum Foundation for specific initiatives.
Organizational Foundation
Paradigm provides blockchain technical infrastructure through Reth, the open-source Rust-based Ethereum execution client. Beyond software infrastructure, Paradigm contributes blockchain architecture expertise, connections throughout cryptocurrency and blockchain ecosystems, experience with cryptoeconomic mechanism design and consensus protocols, and portfolio synergies with other infrastructure projects.
Stripe brings operational experience in payment processing at global scale. Processes billions of dollars in payments annually across 135+ countries. Maintains compliance infrastructure spanning multiple regulatory jurisdictions. Operates systems requiring extreme reliability and uptime. Manages relationships with banks, card networks, and regulatory bodies globally.
Tempo operates as an independent company with its own full-time team. Stripe and Paradigm participated as initial investors and maintain strategic involvement.
Strategic Analysis. Infrastructure for Payment-First Blockchain
Tempo represents specialized infrastructure development for a specific blockchain use case. High-volume stablecoin payments requiring predictable performance, regulatory compliance, and integration with existing financial systems.
The project's technical design reflects payment-specific optimization. Isolated payment lanes prevent payment transactions from competing with other blockchain activities. Sub-second deterministic finality through BFT-style consensus enables immediate, irrevocable transaction confirmation. Stablecoin-native fee structure eliminates the requirement for separate gas tokens. EVM compatibility provides migration paths for existing Ethereum development tools. Proof of Authority consensus enables high performance through coordination among a smaller set of institutional validators.
The validator and design partner structure differs from typical blockchain development. Financial institutions participate not just as users or customers, but as infrastructure operators and co-designers. This provides infrastructure ownership, compliance integration (validators are regulated financial institutions), enterprise requirements (design input from major institutions), and distribution channels (participation from companies with hundreds of millions of combined users).
Several market developments provide context. Stablecoin market expansion (growth from approximately $10B in 2020 to $270B in 2025). Regulatory framework development (progression toward defined regulatory parameters in major jurisdictions). Institutional blockchain adoption (increasing financial institution exploration of blockchain-based settlement). Emerging AI payment patterns (development of autonomous AI agent systems requiring high-frequency micropayment capabilities).
Operational model characteristics include phased decentralization approach (initial deployment with permissioned validators, explicit roadmap toward permissionless validator participation), multi-stablecoin neutrality (protocol-level support for multiple compliant stablecoins), vertical integration strategy (combination of blockchain protocol, stablecoin infrastructure, wallet systems, and merchant payment services), and enterprise development standards (measured progression through private testnet, public testnet, and mainnet phases).
Assessment. Specialized Infrastructure Development
Tempo represents infrastructure development targeting specific requirements of payment-focused blockchain applications rather than general-purpose blockchain platforms.
The project combines experienced leadership (team backgrounds spanning payment processing, blockchain development, and scaling architecture), institutional participation (direct involvement from major financial institutions as design partners and likely validators), operational infrastructure (functional system in private testnet currently processing test transactions), technical differentiation (architecture choices specifically targeting payment use cases), and strategic integration (positioning within Stripe's broader cryptocurrency strategy).
Blockchain-based payment infrastructure continues developing across multiple approaches. General-purpose platforms like Ethereum and Solana prioritize application diversity and programmability. Bridge currency models like XRP enable interbank settlement through a protocol-specific token. Payment-specialized infrastructure like Tempo optimizes specifically for stablecoin settlement.
Enterprise adoption will likely depend on alignment between architectural characteristics and specific institutional requirements. Asset stability and regulatory clarity for treasury operations. Infrastructure ownership and governance models affecting operational control. Technical performance specifications including throughput, finality speed, and cost predictability. Integration capabilities with existing financial systems and operational workflows.
Tempo's model addresses specific enterprise requirements. Stablecoin-native architecture, institutional validator participation, isolated payment processing, integration with Stripe's merchant infrastructure. The approach differs from general-purpose platforms and bridge currency models, representing specialized optimization for payment use cases.
The project's significance lies in demonstrating systematic infrastructure development for payment-focused blockchain applications, combining technical blockchain expertise, operational payment processing experience, and institutional financial services participation.