Circle

Arc Public Testnet is live. @Arc is an open Layer-1 blockchain designed to serve as the Economic OS for the internet, uniting programmable money and onchain innovation with real-world economic activity. Arc is uniquely suited to be a new trusted foundation for: → Lending and financial services → Capital markets → Tokenized asset issuance → Stablecoin settlement worldwide With deterministic sub-second finality, stablecoins as native gas, and opt-in configurable privacy, Arc is purpose-built to meet the needs of the global financial system. It’s built for a world where: → Financial apps are as accessible as email → Dollars, euros, pesos, and other fiat currencies move instantly → Private transactions that support compliance happen at scale → AI agents transact and coordinate commercial activity autonomously Arc testnet is already seeing participation from leading companies across capital markets, global payments and technology platforms, and full-stack developer infrastructure providers. Guided by Circle’s vision of making money truly open and programmable, Arc is public internet infrastructure that invites everyone to build, coordinate, and transact onchain. Start building: docs.arc.network Read the release: circle.com/pressroom/circ…

We expect messages and emails to move instantly. Money should be able to move with the same speed, security, and guardrails.

Jeremy Allaire on the agentic economy: agents will pay other agents for intelligence. Once agents start contracting and settling in real time, the compounding effect is explosive.

App Kits gives developers a faster path to ship onchain apps. The new App Kits page makes it easier to explore the SDK suite, supported flows, and quickstarts to start building. Developers can use App Kits to: → Bridge USDC across supported chains → Send stablecoins on the same chain → Add swap functionality → Support chain-abstracted balances → Configure built-in monetization Start building: arc.io/app-kits

HIFI has processed more than $100M through Circle Payments Network and more than $500M in USDC as of March 2026. With CPN, @hifibridge can turn on new payment routes through a single network connection, helping developers build stablecoin-native apps for: → Remittance → Payroll → Marketplace payouts → Treasury workflows Together, HIFI and CPN help stablecoin-native financial products add compliant connectivity, expand market reach, and move money across borders faster. circle.com/case-studies/h…

@cashflow_fi @BuildOnCircle @arc Welcome to CAP!

Cashflow has officially joined the @circle Alliance Program, a global initiative uniting teams building real utility onchain with USDC. A major milestone in our mission to deliver a secure and seamless mobile experience for personal finance on Solana.

AI adoption is accelerating because the tools are simple and accessible. For onchain systems, the focus is on reaching that same level of usability. @KashRazzaghi on why clear, practical use cases, like real-time global money movement, are driving interest.

EURC’s share of the euro stablecoin market more than doubled from January 2025 to March 2026. As liquidity deepens, EURC is becoming a stronger standard for euro-denominated activity onchain.

.@Circle CCTP is live on Stellar. Now, the Stellar ecosystem is connected to the wallets, exchanges, and DeFi lending protocols that use @USDC. stellar.org/blog/foundatio…

CCTP is now live on @StellarOrg. Developers, institutions, and businesses can now move USDC between Stellar and 23 supported blockchains using Circle’s canonical burn-and-mint infrastructure. → Crosschain transfers, deposits, and swaps → Programmatic treasury rebalancing → Crosschain payment settlement → Cross border payments Start building: developers.circle.com/cctp/reference…

If software is going to transact, costs have to disappear. @jerallaire on why nanopayments matter and what becomes possible when moving money costs almost nothing.

AI agents can make decisions, coordinate tasks, and trigger actions faster than any human workflow. For that to work in commerce, the money layer has to move at the same speed. Circle Chief Technology & AI Officer Li Fan joined @mallun at @sxsw to discuss why programmable money is a natural fit for agent driven commerce.

Banks are no longer asking whether to engage with digital assets. The question now is what it takes to run them inside the bank, across payments, treasury, compliance, risk, and client flows, not as a pilot, but as production infrastructure. Our latest Circle Current discussion explores what that operating model looks like: circle.com/current/design…

Consensus Miami made one thing clear: stablecoins are moving deeper into the core of financial infrastructure. Across the week, conversations centered on payments, banking, capital markets, and the growing role of trusted, internet-native rails in how value moves globally. Good conversations. Strong momentum. More ahead.

The internet gave us standards for information and communication. The next phase is building standards for money and identity. @jerallaire on why AI and blockchain based financial infrastructure are accelerating the need for internet native identity systems.

EURC wallet share grew more than 6x from January 2025 to March 2026. As adoption expands, euro-denominated stablecoin usage is reaching a broader set of users and applications onchain.

Jeremy Allaire (@jerallaire) is the Chairman, CEO, and co-founder of @circle, the issuer of USDC — a stablecoin with nearly $80 billion in circulation and a core piece of the broader stablecoin market, which has grown from zero to more than $300 billion over the past decade. In this fireside, YC Visiting Partner @nemild sat down with Jeremy to talk about Circle's founding vision of building an internet protocol for dollars, the wave of institutional and regulatory adoption now reshaping the financial system, and why agentic economic activity, not just consumer payments, might represent the most transformative frontier for stablecoin builders in the years ahead. 00:00 - Why Stablecoins Matter 01:45 - Circle's Origin 07:10 - Top Use Cases for Builders Today 11:22 - Consumer vs. Business Adoption 13:20 - Banks & Institutions Enter the Space 17:54 - Global Regulation Landscape 22:40 - AI Agents & the Agentic Economy 26:15 - Missing Infrastructure for Builders 27:38 - Three Big Predictions for Stablecoins

Proud to share that Circle won the World Trademark Review Industry Award 2026 for Financial & Professional Services Team of the Year! Congratulations to the team helping protect and build our trusted global brand!

Circle Current Session Recap: Always-On Settlement Rewrites the Bank Operating Model Circle Current is a series from Circle that brings together industry leaders to explore what’s next in the internet financial system. Always-on settlement is moving from pilot to production, with stablecoin rails giving banks a practical path to move funds 24/7. What’s changing: → Settlement is moving beyond banking hours → Liquidity can move with less delay → Prefunding requirements can start to shrink → Treasury and operations teams need to adapt to continuous money movement Visa’s rollout shows this is no longer an edge case. For banks, the shift is bigger than faster payments. It is an operating model change. Read the blog for more details: circle.com/current/always…

The future is now! What a room full of Bermuda @USDC holders look like @circle