Sanket Jain

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

Views are my own

[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 That experience forced me to confront how outdated and exclusionary financial infrastructure really is.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

[Sanket Jain @blockjain]

@alexyango looks sick

[Arc @arc]

Earn Vault curated by @gauntlet_xyz is designed to put your @usdc to work.

Early access through Arc Portal is coming soon. Join the waitlist. https://t.co/G5TaIDWmdn

[ᕈulsar Money @PulsarMoneyApp]

Earn connects you to a vault enabled by two leading names in the ecosystem, settled on @arc.

Steakhouse curates permitted lending markets, Morpho provides the infrastructure, & Pulsar brings it all together in one place.

No app to switch or balance to top-up.

[Sanket Jain @blockjain]

1 billy

[Rachel Mayer @0xrachelita]

1 Billion USDC issued on Arc

[Extended @extendedapp]

Extended now settles on @arc.

The migration of $120 million in TVL is complete, with open positions and orders carried across. Trading continued throughout the process.

What this means for our users:
• Faster deposits and withdrawals, leveraging Arc’s sub-second finality.
• Native USDC transfers through Circle’s CCTP.
• cirBTC is now the BTC collateral asset.

Deposits and withdrawals are open again.

[Sanket Jain @blockjain]

@0xrachelita *coke zero

[Sanket Jain @blockjain]

@yashnuff @hparikh223 👀

[Extended @extendedapp]

https://t.co/r26IdaC2K1

[ᕈulsar Money @PulsarMoneyApp]

Big ideas are easy.

Making them feel effortless takes work.

Together with @Arc, we're building the app for how money moves today, powered by a strong & reliable infrastructure underneath.

Read Arc's Partner Spotlight below ↓

[Matrixdock @matrixdock]

With $XAUM live on @arc, tokenized gold is becoming part of the economic OS for the internet.

@Eva_Matrixdock of Matrixdock and @chandhok of @circle on what comes next.

[Matt Venables @mattyven]

I was skeptical but @Arc is legitimately a pleasant blockchain to use. Fast, USDC fees, EVM based. Hard not to like it.

[Sanket Jain @blockjain]

Progressive regulation will be enable portable user owned identity to exist for the first time. This will have insanely positive downstream effects for the adoption of all different types of digital assets and the emergence of net new venues and primitives.

[Cointelegraph @Cointelegraph]

🚨 LATEST: SEC Commissioner Hester Peirce says zero-knowledge proofs could verify compliance without collecting users’ personal data.

She warns current KYC/AML practices create “data haystacks.”

[Sanket Jain @blockjain]

@0xrachelita Yes it lives in my twitter comments

[Chris Ries @chrisries]

last week @KashRazzaghi showcased how private assets will be deployed/managed on Arc

by this time next year, over 30% of assets deployed will be private

privacy will be a key driver for unlocking latent demand

[Sanket Jain @blockjain]

@Alex__Radu @arc @PulsarMoneyApp Nice! Taking a look soon and will follow up

[Sanket Jain @blockjain]

what are some apps building on @arc that I should try?

[Sanket Jain @blockjain]

@itstorvian @arc @Nexrowxyz reply here when it opens up again!

[Arc @arc]

Arc Portal is live.

The easiest place to start using Arc:
→ Create or fund wallets
→ Access earn opportunities with @Morpho
→ Swap assets including USDC for cirBTC
→ Manage agent wallets
→ Discover apps
→ View balances and activity

No tab-hopping across onramps, exchanges, wallets, and apps.

One entry point from first visit to first action.

https://t.co/Evo92X8pLd

[Sanket Jain @blockjain]

@arcals_circle @circle @arc @samconnerone @bobbilee looking into it

[Rachel Mayer @0xrachelita]

how a private stablecoin transfer should feel:

open your wallet. toggle private on and hit send. no one else can see it.

how it actually works on @arc :

configurable privacy at the protocol layer, encrypted state in hardware enclaves, master key threshold-split across validators, post-quantum from day one.

what each piece actually does ↓