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Many financial products are still built as closed systems. Payments, trading, lending, and portfolio management often operate through separate interfaces and infrastructure.


But blockchain introduces a different design principle: composability.


Instead of building every financial function from scratch, developers can combine existing onchain components to create entirely new products.


Imagine a portfolio application that monitors market positions, manages collateral, executes predefined risk rules, and settles payments through USDC—all by connecting existing protocols rather than rebuilding each system independently.


This is where blockchain infrastructure becomes more than a place to deploy smart contracts. It becomes a foundation that developers can build upon, extend, and connect in unexpected ways.


Arc's EVM-compatible environment and USDC-focused design could offer builders a useful foundation for experimenting with financial applications that combine multiple onchain components.


The challenge is making these integrations reliable. Composable systems also inherit the risks, dependencies, and security assumptions of the components they connect.


The real opportunity is not simply having more protocols. It's enabling developers to create financial products that would have been difficult or expensive to build in isolation.


If developers can combine financial building blocks freely, what kinds of applications could emerge that would be impossible to build efficiently today?

What Happens When Financial Infrastructure Becomes Composable?

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