How Arc Supports Capital Markets Settlement | Arc Blueprints

Arc¹ is the Economic OS for the internet. Designed for compliance-readiness, programmability, and deterministic finality, Arc’s rails enable capital markets transactions to settle in real time, while preserving auditability, control, and regulatory alignment.

In traditional markets, post-trade infrastructure is still shaped by delayed settlement windows, manual reconciliation, and fragmented custodial chains. But for enterprise teams, the bigger blockers are structural: fee markets that are hard to predict, operational complexity spread across multiple intermediaries, and privacy controls that are either insufficient or bolt-on. Arc is a Layer-1 (L1) blockchain purpose-built to address those frictions. With predictable, stablecoin-denominated fees, deterministic sub-second finality, and opt-in privacy with selective disclosure, institutions can use applications built on Arc to move to real-time settlement onchain.

This post also examines how Arc modernizes traditional post-trade infrastructure into a single programmable, deterministic layer that supports real-time delivery-versus-payment (DvP), onchain fund management, collateral operations, and even prediction markets. All while retaining compliance-readiness throughout.

The challenges of traditional capital markets settlement

Most global markets still operate on T+1 or T+2 settlement cycles. These delays lock up capital, increase counterparty exposure, and require complex risk management to bridge the gap between execution and final settlement. The result is higher capital requirements, greater operational risk, and slower time-to-value for institutions modernizing settlement and collateral workflows.

Post-trade workflows are also fragmented. Execution, clearing, netting, custody, and settlement often occur across distinct systems and entities, resulting in duplicated recordkeeping and reconciliation bottlenecks that are expensive to operate and difficult to modernize.

Finally, traditional ledgers tend to be opaque in practice: limited real-time traceability, inconsistent audit trails across intermediaries, and a heavy reliance on manual processes for reporting, compliance checks, and corporate actions.

The benefits of programmable, onchain settlement

By bringing post-trade workflows onchain, capital markets built on Arc can settle on infrastructure that is programmable, auditable, and always-on. Settlement becomes an atomic function where both asset and payment transfer happen in a single transaction, helping reduce principal risk and compressing settlement exposure from days to seconds.

Beyond settlement, onchain systems redefine lifecycle events as software: redemptions and distributions can be automated, margin calls and collateral checks can be enforced in real time, and policy controls and compliance requirements can be embedded into transfer logic to reduce manual checks and improve consistency across counterparties.

And because every event is recorded and time-stamped onchain, institutions can enhance auditability and operational oversight.

Next, we’ll show how these benefits translate into the workflows Arc enables.

How Arc supports modern capital markets settlement

Arc is built for real-world financial activity, combining stablecoin-native execution, programmable logic, and deterministic, sub-second finality to support real-time settlement with compliance-ready controls.

Here’s the shift Arc enables at the infrastructure level:

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Together, these capabilities turn settlement from a multi-step, multi-intermediary process into a single programmable layer where delivery-versus-payment, controls, and collateral operations can execute as part of the same onchain flow. Below are a few representative workflows.

Instant delivery-versus-payment (DvP)

Arc’s rails enable true atomic DvP settlement: tokenized assets and stablecoin-denominated payments can be exchanged simultaneously in a single onchain transaction. This structure helps reduce principal risk by ensuring neither leg can settle without the other.

Arc’s sub-second finality is deterministic and cryptographically verifiable, allowing participants to reconcile immediately with high confidence that settlement is final. This is particularly important for institutional workflows that depend on clear, auditable settlement guarantees.

For transactions requiring oversight, Arc supports opt-in configurable privacy and selective disclosure (e.g., view-key access), so authorized parties like auditors or regulators can be granted access to review activity while sensitive data remains protected from public view.

Tokenized securities, funds, and structured products

Arc’s rails support issuing and managing financial instruments onchain, including equity-like instruments, debt-like instruments, and structured products. Smart contracts can automate the full lifecycle:

• Issuance and transfer
• Redemptions and paydowns
• Distribution events
• Corporate actions and entitlement logic

This automation turns asset servicing into software, reducing operational reconciliation and enabling more consistent downstream settlement and reporting.

And because rules are enforced in code, issuers can embed controls directly into the asset:

• Transfer restrictions and whitelist checks
• Jurisdictional constraints
• Permissioned participation requirements

This enables scalable distribution while maintaining consistent policy enforcement across markets and counterparties.

Prediction markets trading real-time data, forecasts, and risk signals

Prediction markets are a native fit for real-time settlement. Built on Arc, markets can settle instantly in stablecoins with predictable fees, enabling more granular markets around economic indicators and releases, event outcomes, risk signals and forecasting data, and more.

These systems can integrate with oracles to resolve outcomes and distribute payouts automatically once conditions are met, creating faster feedback loops for market-based forecasting.

Onchain collateral and margin management

Arc enables onchain collateral and margin operations with programmable logic that can enforce thresholds, trigger margin calls, automate top-ups, and execute liquidations when conditions are breached. With deterministic finality and stablecoin-native flows, platforms can reduce batch reconciliation and manage margin as part of settlement execution — improving transparency and lowering operational risk for lenders, venues, and institutional counterparties.

Build² on Arc and unlock a new settlement foundation

Those who build on Arc compress key post-trade functions into a unified programmable foundation with fast and deterministic finality, fiat-denominated gas, and audit-ready controls. This enables use cases ranging from tokenized securities and fund servicing to real-time collateral systems and new markets built around real-time resolution.

By building on Arc, developers and institutions can reduce the operational drag of legacy post-trade workflows while retaining compliance alignment — unlocking a settlement model that is real-time by default, globally available, and designed for scale.

Explore the Arc docs, join the community, or connect with Circle to discuss capital markets workflows built on Arc. Arc is open by design and multichain-aligned through Circle CCTP and Circle Gateway, helping builders and institutions modernize settlement without sacrificing interoperability.