Circle bets on Arc, its anticipated layer-1 blockchain, announcing the integration with Fireblocks to engage over 2,400 banks, asset managers, and fintech at the heart of the stablecoin race.
What is Arc and why is Circle launching it now?
Arc represents the new layer-1 blockchain infrastructure of Circle, designed to enhance the development and management of stablecoin and digital assets on a global scale. Its purpose is to compete directly with other institutional blockchain solutions, offering a platform optimized for security, compliance, and interoperability.
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… pic.twitter.com/N99Kc8UxpG
— Arc (@arc) August 12, 2025
The news arrives at a crucial moment when the so-called “stablecoin race” is intensifying, with the main industry players ready to redefine the standard between digital currency and institutional markets. According to what has been stated, Circle plans the launch of the public testnet of Arc in the fall of 2025, with a full network start before the end of the year.
Why is Fireblocks involved and what does it offer?
Fireblocks is one of the leading global players for the custody, tokenization, and compliance of digital assets. Based in New York, it offers services to more than 2,400 institutional clients including large banks, wealth managers, and fintech platforms.
Circle’s @Arc has landed on the Fireblocks Network 
Where stablecoins and the global financial system move as one 
Fireblocks expands its platform to support one of the most innovative chains for powering stablecoin finance — from secure custody and compliance to moving…
— Fireblocks (@FireblocksHQ) August 14, 2025
The integration between Arc and Fireblocks will offer:
Advanced custody of the tokens and stablecoins created on Arc
Integrated compliance solutions, facilitating adoption by regulated entities
Full compatibility with over 120 blockchain already supported by Fireblocks
Facilitation of cross-chain regulations and instant settlement between institutions
This means that, at the time of launch, institutional clients will be able to transact on Arc directly from their Fireblocks platforms, accelerating migration and interoperability between digital markets.
When will Arc be available? And why is the testnet fundamental?
At the moment Arc is not yet active. Circle has officially announced the intention to launch a public testnet in the fall of 2025. The testnet phase will serve to:
Validate the security of the new infrastructure
Engage developers and institutions to test concrete use cases
Develop integrations with strategic partners like Fireblocks
If the timelines are met, the full launch of Arc is expected by the end of 2025. In this timeframe, Circle aims to consolidate partnerships and accelerate the race for the adoption of guaranteed and regulated stablecoins.
How does Fireblocks revolutionize the adoption of Arc?
The key element of this announcement lies in the presence of Fireblocks, already used by a large part of institutional players. The custody platform not only reduces technical complexity, but also ensures regulatory compliance and immediacy of transactions.
Fireblocks already allows operations on over 120 different blockchains, enabling direct settlement between financial institutions in global markets. Thanks to the integration with Arc, banks and managers will be able to access a native blockchain infrastructure for stablecoins, maintaining their security and compliance standards.
The stablecoin race: how is the landscape changing?
With the arrival of Arc and the direct support of Fireblocks, Circle relaunches the challenge in the stablecoin sector, aiming to become the main solution for institutional adoption of digital currencies.
This move has significant impacts:
Attracts the interest of the main banche e società fintech globali
Accelerate the development of ecosystems DeFi with strong security and compliance requirements
Enhance the digital transformation of traditional financial markets
The so-called “Trump Effect,” with the current president of the United States, indeed helps to keep regulatory and market attention high on digital assets, making these infrastructures even more strategic in the global context.
What are the prospects for developers and institutions?
For those operating in the crypto sector, the publication of the Arc testnet represents a concrete opportunity for development and experimentation of real use cases. Institutions will be able to prepare for integration by testing Fireblocks solutions and evaluating the performance of Circle’s blockchain in actual operational scenarios.
Developers will be able to access a new environment to design DApp and DeFi protocols, leveraging the compatibility guaranteed by Fireblocks with other blockchains and the specific features offered by Arc.
What happens now? Next steps and what to monitor
The anticipation in the coming months focuses on some key points:
Punctual launch of the public testnet in fall 2025
Official communications from Circle and Fireblocks on partnership and implementation details
Participation of the first institutions in the test, with feedback on compliance, user experience, and interoperability
Detailed roadmap towards the mainnet launch expected by the end of 2025
The future of stablecoins and institutional blockchain infrastructures now depends on crucial choices: the battle between Circle, Fireblocks, and the main competitors will mark the evolution of the sector, influencing regulators, developers, and large investors.
Get ready to closely follow the release of the Arc testnet and the news that will be announced in the coming months: Circle’s protagonism in the stablecoin race could redefine the rules of the digital financial game.
