The Market Infrastructure Grid: Security and Validation

The Secure Foundation for Real-Time Markets on Sei

Modern financial markets no longer operate in batches or fixed trading windows. Capital now moves continuously — across geographies, time zones, and counterparties. That shift fundamentally changes the security requirements of market infrastructure.

In real-time environments, the idea of security is not only about protecting assets. It also encompasses continuous uptime, deterministic execution, verifiable finality, and institutional-grade custody — simultaneously. Any weakness in this foundation becomes an operational risk, and a reason for pause in developing onchain integrations.

The Security & Validation System of the Market Infrastructure Grid is designed to meet these requirements at the system level.

It reflects a system-level architecture where enterprise-grade security and custody capabilities are natively available within the Sei ecosystem, allowing institutions to operate confidently on shared, real-time rails.

Two Aligned Security Layers for Real-Time Markets

As real-time market activity on Sei has scaled, two layers of security have aligned around the network — one securing the protocol itself, and one securing the assets that move through it.

Together, these layers are designed to support secure, resilient, and continuous markets as enterprise activity scales.

Enterprise-Grade Network Validation

Protocol Security, Uptime, and Finality

At the protocol layer, security is anchored by a globally distributed validator set engineered for continuous, real-time operation.

Within the validator set, a subset of enterprise-grade operators brings additional operational rigor — informed by experience operating large-scale, adversarial, always-on financial infrastructure.

Leading global enterprises such as Binance and Kraken operate validators on Sei in this capacity:

• Binance — A global exchange operator securing over $200B in customer assets, applying institutional operational discipline, monitoring, and resilience practices to network validation.
• Kraken — A long-standing exchange and infrastructure operator supporting protocol security and sustained network performance.

Network participants inherit this validation environment by default. They do not need to manage validator relationships directly; they simply operate on a network already secured by enterprise-grade validators.

Institutional Custody for Modern Markets

Asset Security and Onchain Participation

At the asset layer, institutional custody has aligned around the Sei ecosystem to support real-time market participation under established compliance and governance frameworks.

The Security & Validation System includes leading institutional custodians that already secure a significant share of global digital asset activity:

• Coinbase Custody — Institutional custody and onchain access for regulated participants
• Anchorage — A federally chartered digital asset custodian supporting secure asset management
• Fireblocks — Secure transaction and key management infrastructure for institutional workflows
• BitGo — Qualified custody, governance, and operational controls for digital assets
• Crypto.com — Institutional custody and asset services supporting onchain participation

Together, these custodians establish a custody environment enterprises can access immediately — without reengineering security assumptions or operational workflows.

These systems are not external add-ons. They are natively available within the Sei ecosystem.

How System-Level Security Changes Enterprise Adoption

For enterprises, the barrier to operating onchain has never been a single point of failure. It has been the accumulation of unresolved trust assumptions — across security, custody, and uptime.

On Sei, security and custody are not external dependencies that must be sourced, integrated, and reconciled independently. They are embedded into the environment itself.

Enterprises operate on infrastructure secured by enterprise-grade validators and gain access to institutional custody systems already integrated onchain. This reduces friction, shortens deployment timelines, and removes the need to stitch together trust across disconnected systems.

Operating Real-Time Markets on Sei

For a financial institution deploying a real-time trading or settlement application on Sei, the Security & Validation System changes the deployment equation.

Rather than engineering security and custody in parallel, the institution interacts directly in an environment where execution integrity, finality, and asset security are already in place. Validation infrastructure is designed to ensure deterministic execution and uptime, while institutional custodians enable compliance-focused asset management from day one.

The result is faster deployment, continuous operation, and fewer operational compromises — without sacrificing security.

What Enterprises Gain Across the Grid

With the Security & Validation System in place, enterprises on Sei can:

• Operate real-time markets with confidence in network uptime and execution
• Align custody and asset management with internal compliance requirements
• Reduce operational complexity by relying on existing institutional infrastructure
• Launch and scale onchain operations faster, without compromising security

Security on Sei is not a constraint. It is an operating baseline.

A Compounding Security Layer

As additional enterprise-grade validators and custodians become available on Sei, the Security & Validation System continues to strengthen.

Each new participant expands the breadth, credibility, and operational depth of the ecosystem — raising the standard for what enterprises can expect from onchain infrastructure.

This growing density of trusted systems is what enables Sei to support not just applications, but durable market infrastructure.

The Security Foundation for Global Markets

The Security & Validation System is the first core system of the Market Infrastructure Grid because every other system depends on it.

Liquidity, data, distribution, and innovation can only scale when enterprises are confident in the foundation beneath them.

By making enterprise-grade validation and custody systems directly available on shared, real-time rails, Sei establishes a security model purpose-built for modern markets — where capital moves continuously and infrastructure must keep pace.

Built for global markets. Secured by global enterprises.