Tempo vs Arc: How Two Stablechains Are Building the Next Generation of Finance Infrastructure

TL;DR

• Tempo (Stripe and Paradigm, led by Matt Huang) launched mainnet on March 18, 2026, with no native token and fees paid in any USD stablecoin through a built-in Fee AMM.
• Arc (Circle, the issuer of USDC) uses USDC as gas plus a separate ARC token, and targets a 2026 mainnet beta after its October 28, 2025 public testnet.
• Both run EVM-compatible execution with sub-second finality, enforce compliance at the protocol level, and share design partners including Visa, Anthropic, Deutsche Bank, and Standard Chartered.
• They compete with Tether‘s Plasma and Stable, and with Tron, the largest stablecoin settlement network by transaction count.
• Both start with permissioned validators and describe a path to permissionless proof-of-stake or permissionless validation, the point at which operators such as Everstake could run validators.

For better context, read Everstake’s standalone explainer on Tempo and Everstake’s intro piece on Arc.

What Is a Stablechain, and Why Did It Emerge?

A stablechain is a blockchain engineered specifically for stablecoin settlement. The category appeared in 2025 as stablecoin volume reached payment-system scale and regulators set clear rules.

Defining the Stablechain: A Layer 1 Purpose-Built for Stablecoin Settlement

A stablechain optimizes a Layer 1 network for moving dollar-pegged tokens with predictable cost and fast finality. It treats stablecoins as first-class assets.

Most stablechains keep EVM compatibility, so developers reuse standard tooling:

• Solidity
• Foundry
• Hardhat

Stablechains also add payment-specific features:

• memos for reconciliation
• dedicated blockspace
• stablecoin-denominated fees

The Limitations of General-Purpose Chains for Payments

General-purpose chains impose costs that payment operators cannot predict. Fees rise during congestion, and users must hold a volatile native token to transact.

Purpose-built chains are designed to fix the following problems:

• volatile gas priced in a fluctuating native asset
• unpredictable fees during network congestion
• throughput ceilings under sustained transaction volume
• compliance friction with no protocol-level policy tooling

The 2025 Catalyst: Stablecoin Growth and the Global Regulatory Turn

Regulation and record volume made 2025 the year stablechains became viable. The stablecoin market grew 49% to $306B by December 2025 and processed over $33T on-chain that year.

The GENIUS Act and MiCA propelled stablecoin adoption. The GENIUS Act was signed into law on July 18, 2025 as Public Law 119-27, and the EU‘s MiCA stablecoin rules applied from June 30, 2024, with the full regime live from December 30, 2024.

Framework	Jurisdiction	Key date	Core rule
The GENIUS Act	United States	July 18, 2025	Federal license for payment stablecoin issuers, 100% reserves
MiCA	European Union	June 30, 2024	EMT and ART token categories, issuer authorization

Tempo: Stripe and Paradigm’s Payments-First Layer 1

Tempo is a payments-first Layer 1 incubated by Stripe and Paradigm for stablecoin settlement. It launched mainnet on March 18, 2026 with fees paid in stablecoins and no volatile native token.

Origins and Backing: Incubated by Stripe and Paradigm, Led by Matt Huang

Tempo is led by Matt Huang, co-founder and managing partner of Paradigm. Stripe contributes payments distribution and its merchant network, while Paradigm contributes the engineering bench.

The project raised $500M at a $5B valuation, led by Thrive Capital and Greenoaks. It runs as an independent company separate from either backer.

Architecture: EVM Compatibility, Reth Plus Simplex Consensus, ~0.6s Finality

Tempo runs the Reth execution client with Simplex Consensus via Commonware. It delivers roughly 0.6-second deterministic finality with no re-orgs.

Testnet benchmarks reached near 20,000 TPS, with an architectural target above 100,000 TPS. Fees are payable in any USD stablecoin, and the network is fully EVM-compatible.

The Stablecoin-Neutral Model: Enshrined AMM, No Native Token, Fees in Any USD Stablecoin

Tempo has no volatile native token, and fees settle in USD stablecoins. A built-in Fee AMM converts any USD-denominated TIP-20 token to the validator’s preferred fee token automatically.

The neutrality suits businesses that avoid holding speculative assets. It also ships an enshrined stablecoin DEX for stablecoin-to-stablecoin conversion.

Compliance and Payments Primitives: TIP-20, TIP-403 Policy Registry, Receive Policies

Tempo builds compliance into the protocol through the TIP-20 token standard and the TIP-403 policy registry. TIP-403 lets tokens reference shared whitelist or blacklist policies for KYC, AML, and access control.

Receive Policies let accounts define accepted tokens, accepted senders, and a recovery authority. A transfer an account does not accept routes to a protocol guard and stays recoverable.

Current Status: Mainnet Live Since March 2026, First External Validators, and Early Traction

Tempo has been live on mainnet since March 18, 2026, following a public testnet that opened in December 2025. Its first external validators arrived in April 2026: Stripe, Visa, and Zodia Custody by Standard Chartered.

The network is permissioned today, with a stated roadmap toward permissionless validation. Tempo has reportedly recorded 7.5 million transactions to date.

Arc: Circle’s Stablecoin-Native “Economic Operating System”

Arc is an open Layer 1 blockchain built by Circle, the issuer of USDC. It targets four application areas:

• payments
• settlement
• foreign exchange
• capital markets

Origins and Backing: Built by Circle, Issuer of USDC

Arc was announced publicly by Circle in August 2025, alongside the company’s Q2 2025 results. Circle positions Arc as the home for USDC and other regulated digital money.

The network is not live as of July 2026.

Circle published the Arc white paper in May 2026. The document outlines the network’s move toward a proof-of-stake consensus model. 

Architecture: EVM Compatibility, Malachite Consensus, Deterministic Sub-Second Finality

Arc runs on Malachite, a Tendermint-based BFT engine, and is fully EVM-compatible. It delivers deterministic finality in under 1 second.

Arc’s fee model builds on Ethereum’s EIP-1559 design. It replaces block-level adjustments with a weighted moving average of network demand to keep fees predictable.

The USDC-Anchored Model: USDC as Gas, the Native ARC Token, and StableFX

Arc uses USDC as its native gas asset, so transaction costs stay dollar-denominated. A Paymaster system also lets other stablecoins pay for gas.

The separate ARC utility token serves as a coordination asset for three functions:

1. governance
2. security
3. network operations

StableFX (a built-in RFQ engine) handles on-chain currency exchange and 24/7 settlement.

Compliance and Privacy: Opt-In Confidential Transfers, KYB/AML Gating, Permissioned-to-Decentralized Path

Arc pairs opt-in confidential transfers with protocol-level compliance controls. Users and enterprises can selectively shield balances while meeting their own reporting obligations.

Validator selection is currently permissioned, based on three criteria:

1. operational resilience
2. geographic distribution
3. regulatory compliance

Circle plans a transition to a permissioned proof-of-stake model as the network decentralizes.

Full Circle Stack Integration: CPN, CCTP, Gateway, Mint, and Paymaster

Arc integrates natively with Circle‘s existing product suite. Supported assets and infrastructure include:

• USDC and EURC stablecoins
• CPN (the Circle Payments Network)
• CCTP for cross-chain USDC transfer
• Gateway for unified balances
• Mint and Paymaster for issuance and gas sponsorship

Current Status: Public Testnet, the ARC Token Presale, and the 2026 Mainnet Target

Arc is not live on mainnet as of July 2026. Its public testnet launched on October 28, 2025, with 100+ institutions testing, including BlackRock, Visa, and Goldman Sachs.

Circle raised $222M in an ARC token presale on May 11, 2026, at a $3B fully diluted valuation, led by a16z. Mainnet beta is expected during 2026, subject to testnet results and regulatory readiness.

Tempo vs. Arc: How the Two Stablechains Compare

Tempo and Arc share a goal yet diverge on token design, distribution, and maturity. The core differences across both stablechains are:

Dimension	Tempo	Arc
Backer	Stripe and Paradigm	Circle
Gas / fee model	Any USD stablecoin via Fee AMM	USDC as native gas
Native token	None	ARC
Consensus	Simplex via Commonware	Malachite (Tendermint BFT)
Finality	~0.6s deterministic	Under 1s deterministic
Throughput	~20,000 TPS tested	3,000 TPS
Current status	Mainnet live since March 2026	Public testnet, mainnet beta 2026
Distribution edge	Stripe merchant network	USDC footprint and CCTP

Fee and Token Models: Stablecoin-Neutral vs. USDC-Anchored With a Native Token

The token design is the clearest split between the two stablechains. Tempo is stablecoin-neutral, with no native token and fees payable in any USD stablecoin.

Arc anchors to USDC for gas and adds a separate ARC coordination token. Tempo routes issuer neutrality through its Fee AMM, while Arc ties fee economics to Circle‘s own stablecoin.

Distribution and Ecosystem: Stripe’s Merchant Network vs. Circle’s USDC Footprint and CCTP

Each stablechain leans on its backer’s existing reach. Tempo taps Stripe‘s merchant base and payments distribution across commerce platforms.

Arc builds on USDC‘s circulation and CCTP, the cross-chain transfer protocol already used across networks. Circle‘s CPN connects the chain to institutional payment participants.

Compliance Approach: Protocol-Level Policies on Both, Different Implementations

Both stablechains enforce compliance at the protocol layer itself. Tempo uses the TIP-403 registry for shared whitelist and blacklist policies across TIP-20 tokens.

Arc combines opt-in confidential transfers with permissioned validator gating and KYB/AML controls on StableFX. The two designs reach similar goals through different mechanisms.

Maturity and Go-to-Market: Live Mainnet vs. Pre-Mainnet Testnet

Tempo holds a maturity lead over Arc. Tempo has run mainnet since March 18, 2026 and reports 7.5 million transactions to date.

Arc remains in public testnet as of July 2026, with mainnet beta targeted for later in 2026. Tempo therefore holds a live-network lead, while Arc carries Circle‘s USDC distribution into launch.

Overlapping Design Partners and What the Shared Roster Signals

Both stablechains share four confirmed design partners, among others:

• Visa
• Anthropic
• Deutsche Bank
• Standard Chartered

The shared roster signals that large enterprises are hedging across competing chains. Institutions are keeping multiple settlement options open during early testing.

The Competitive Landscape Beyond Tempo and Arc

Tempo and Arc compete inside a crowded field of stablecoin chains and de facto payment networks. Tether, Tron, Layer 2s, and bank consortia all pursue overlapping use cases.

Tether’s Stablecoin Chains: Plasma and Stable

Tether backs two competing chains built around USDT. Plasma is a Bitcoin-anchored, EVM-compatible Layer 1 that launched mainnet beta on September 25, 2025 after a $373M token sale.

Stable uses USDT itself as the gas asset, with no separate fee token. It went live in December 2025 with $2B in pre-deposits and an enterprise focus.

Adjacent Approaches: Tron as a De Facto Stablecoin Network, Layer 2s, and Bank Consortia

Tron is a general-purpose chain that carries the largest share of stablecoin settlement volume. It carried roughly 45% to 52% of USDT supply and processed about $7.9T in USDT transfers during 2025.

Competitors for the same volume:

• Layer 2s such as Base and Arbitrum, offering low-cost stablecoin transfers
• Bank consortia and tokenized-deposit projects pursuing regulated settlement

Why No Clear Leader Has Emerged Yet

No single stablechain dominates because the market is early and fragmented. Tether alone pays roughly $2.9B a year in fees to chains it does not control, which explains the wave of incumbent-backed chains.

Distribution, regulation, and neutrality pull in different directions. Each backer optimizes for its own stablecoin and customer base, so adoption remains split across networks.

What Stablechains Mean for the Future of Finance Infrastructure

Stablechains aim to make programmable dollars settle at internet scale. Their design choices around fees, compliance, and validation will shape enterprise adoption.

Enterprise and Institutional Use Cases

Stablechains target settlement work that legacy chains handle slowly or expensively.

Tempo and Arc institutional use cases include:

• cross-border payments and remittances
• payroll and customer disbursements
• 24/7 settlement and tokenized deposits
• tokenized equities, commodities, and real estate

Agentic Payments: Why Both Chains Target AI-Driven Transactions

Both stablechains position for autonomous software and AI agents. Tempo shipped the Machine Payments Protocol at mainnet, standardizing programmatic authorization through HTTP 402.

Sub-cent fees and sub-second finality make machine-to-machine micropayments viable. OpenAI and Anthropic appear among the design partners exploring agentic transactions.

Staking and Validation: What the Decentralization Roadmaps Mean for Validators

Both start permissioned. Tempo describes a path toward permissionless validation; Arc describes a move to a permissioned proof-of-stake model. 

As Tempo and Arc move from permissioned launch toward open participation, institutions that want direct exposure to validation (without building node operations in-house) will need infrastructure partners they can rely on. 

Everstake, with more than 8 years running validator infrastructure supporting 130+ chains, is well positioned to offer white-label validator services for organizations evaluating both chains: enterprise-grade uptime, monitoring, maintenance, and compliance-aligned operational practices, all delivered under the institution’s own brand.

While neither Tempo nor Arc has opened its validator set beyond permissioned operators today, Everstake’s white-label solution is built to meet the institutional standards both networks require.

Open Questions: Fragmentation, Interoperability, Decentralization, and Regulatory Evolution

Four questions remain unresolved across the stablechain category:

1. fragmentation across competing single-issuer chains,
2. interoperability between networks with different token models,
3. decentralization timelines for permissioned validator sets,
4. regulatory evolution under the GENIUS Act, MiCA, and successor rules.

Stablecoin Future

Tempo and Arc represent two bets on the same stablecoin future from opposite starting points. Tempo bets on stablecoin neutrality and a live merchant network, while Arc bets on USDC distribution and a full Circle stack.

Both stablechains face the same open questions on fragmentation, decentralization, and regulation. Everstake will keep tracking both as they move from permissioned launch toward permissionless validation.