Sanket Jain

Building @Circle @arc | fmr. Co-Founder & CEO @ Gateway (acq.) | @Cornell

[Sanket Jain @blockjain]

Today we are proud to introduce @Arc, a new blockchain network purpose-built for stablecoin finance.

Arc is a step toward something I’ve been working on for years: building a real-world financial system that’s programmable, transparent, and global. One where the benefits of blockchains—openness, speed, and accessibility—can finally show up in everyday financial life.

But to understand why Arc feels so important to me, I want to share a bit of how I got here.

I studied finance at Cornell and spent time working at hedge funds and investment banks. That experience gave me a close look at how money moves through the global system. What stood out to me wasn’t the inefficiency – it was who the system served and who it left behind. The moment it became personal was when I tried sending money to my aunt in India. It should have been simple. Instead, it was slow, expensive, and unnecessarily complicated. That experience forced me to confront how outdated and exclusionary financial infrastructure really is.

It also pushed me into crypto. I joined a company building payment rails on the Bitcoin Lightning Network, trying to reimagine global payments from the ground up. The vision was bold, and I believed in it. But speed alone wasn’t enough. Without privacy, usability, and institutional trust, we were still far from something people could rely on at scale. That led me to start a company focused on privacy-preserving infrastructure. We wanted to build a foundation that made blockchains more secure, more human, and more capable of supporting real-world adoption.

That company was eventually acquired by @circle, where I’ve been working on how to bring stablecoin-based finance to individuals, developers, and institutions. That work has led to Arc. Arc is launching at a moment that feels uniquely aligned. The technology has matured. Institutions are leaning in. And the core building blocks—stablecoins, lending markets, and payment protocols—are in place. Arc isn’t trying to replace what came before. It’s here to complement it, with a purpose-built platform designed for performance, opt-in privacy and stablecoin-based financial use cases.

To me, Arc is a bet that now is the right time to lay the foundation for a more open, efficient, and inclusive financial system. A belief that stablecoins, paired with the right infrastructure, can open the door to a new category of finance, what we call StableFi. Not just for the crypto-native, but for people like my aunt who simply need a better way to move money and access financial tools.

Arc isn’t the finish line. It’s the starting point. I’m proud to be part of it, and I’m even more excited for what comes next. We’re still early, and there’s a lot to figure out. But the path feels clearer than ever. I’m excited to keep building, and even more excited to see what others create on Arc.

[Arc @arc]

Introducing Arc, an open Layer-1 blockchain purpose-built for stablecoin finance.

From payments to FX to capital markets, Arc is the home for builders innovating with digital money and tokenized value on the internet.

Stablecoins have shown us what’s possible.

They’ve powered trillions in onchain transactions and unlocked a faster, more open financial system.

Arc is designed to provide an enterprise-grade foundation with the performance, reliability, and liquidity needed to scale stablecoin use cases worldwide.

Featuring:
✅ USDC as native gas
✅ Built-in FX engine
✅ Deterministic sub-second finality
✅ Opt-in privacy
✅ Full Circle platform integration

At its core is Malachite, a high-performance consensus engine developed by @informalinc that powers Arc with safety, liveness, and resilience at scale.

Arc expands the design space for stablecoins by uniting speed with certainty and delivering the native tooling needed to meet real-world business obligations.

Open and composable, Arc is designed to interoperate seamlessly with the broader multichain ecosystem.

Fully EVM-compatible, developers will be able to build on Arc using the same frameworks and tooling they know and trust.

Together, we’re laying the foundation to move stablecoin finance from early adoption to globally trusted infrastructure.

Arc will enter private testnet in the coming weeks, with public testnet expected this fall.

Read the litepaper → https://t.co/CyaV9GRbPW
Join us in building the new internet financial system → https://t.co/0qxv7q80Gp

[Arc @arc]

Arc Moves Fast. This Does Not.

Watch what Arc was built to leave behind.

June 9.

https://t.co/G2L20rZHfz

[Sanket Jain @blockjain]

@joinshiftX Shift

[Jeremy Allaire - jerallaire.arc @jerallaire]

I am excited to host one of our first live investor AMAs -- open to all CRCL investors, developers, builders and the industry as a whole. I will be hosting in a special format/location (reveal next week), all broadcast live on X and YouTube. See below.

[Sanket Jain @blockjain]

@ShaiviRau @UseLitmus @ycombinator Let’s go!! Congrats!!

[Sanket Jain @blockjain]

@Jaytel this is awesome

[Jeremy Allaire - jerallaire.arc @jerallaire]

This is called @Arc

[Gagan Mac @gaganmac]

We're working more with startups more deeply than ever before. There's a lot of opportunity emerging to build high-quality financial experiences with global reach using stablecoin infra. Reach out if you think we can help at @BuildOnCircle and @arc

[Arc @arc]

Lending infrastructure ready from day one on Arc.

@Morpho will bring composable borrowing and lending to Arc Mainnet, giving builders a credible venue for onchain credit as the network goes live.

More to come.

[Y Combinator @ycombinator]

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

[Sanket Jain @blockjain]

@MrMinter_eth @0xrachelita No, gas abstraction is a user experience patch (someone still pays in the native tokens), our design implies that you can directly pay in the stablecoin

[Sanket Jain @blockjain]

@0xDaedalus @0xrachelita It will be converted prior to reward distribution to stakers/burns. This conversion is happening with already existing ARC

[Rachel Mayer @0xrachelita]

easy thing to miss in the ARC whitepaper

protocol fees are paid in stablecoins. but they're converted to ARC at the protocol level before anything else happens.

network usage = ARC demand, regardless of what you paid in

[Blessing Adesiji @bleso_a]

I gave an AI agent USDC to analyze my tweets and audit my X profile. Here’s how you can do the same.

[Arc @arc]

100,000 followers on Arc.

Build on Arc.

[Circle @circle]

Introducing Circle Agent Stack: financial infrastructure for the agentic economy.

Agent Stack gives agents the tools to:
→ Hold and move USDC through Agent Wallets
→ Discover services through Agent Marketplace
→ Execute repeatable financial actions through Circle CLI

All within defined permissions and guardrails.

Explore the site: https://t.co/uNiXJOTAjy
Read the blog: https://t.co/RMtPokSvZQ

[Sam | Circle and Arc Community @samconnerone]

At a high level, ARC serves five structural functions within the Economic OS.

The following white paper describes how ARC fulfills these roles in detail.

https://t.co/YvLPF6oird

[Gagan Mac @gaganmac]

Read more about our plans. Android brought internet to 80% of the world's pockets. With Arc as the economic OS - we want to bring financial opportunities to every corner of the internet.

Arc token delivers the coordination mechanism that keeps us true to this mission.

https://t.co/gwNVRfAMav

[Sanket Jain @blockjain]

The ARC whitepaper is now live.

[Arc @arc]

Introducing the ARC whitepaper.

The paper outlines how ARC could serve as the native coordination asset of the Arc network, supporting security, economic governance, fee mechanics, and broader platform utility as Arc evolves.

The core idea: stablecoins move value. Arc provides the execution environment. ARC could help coordinate the participants who depend on the network.

Read the whitepaper: https://t.co/BxS4xuQV3i

[Sanket Jain @blockjain]

Money is becoming programmable intent. Arc is the place where that intent is executed and settled. ARC token is how those global participants are coordinated.

[Ali Yahya @alive_]

https://t.co/EJrDz0w0jX

[Sanket Jain @blockjain]

ARC - Made in America

[Jeremy Allaire - jerallaire.arc @jerallaire]

ARC. Made in America. Made by an SEC-regulated NYSE-listed American public company.

Welcome to 2026. We've come a long way.

CLARITY