Engineering

6-Layer Settlement Architecture — How to Design Infrastructure to Operate in Two Worlds

GD

Gabriel Darruiz

Head of Engineering

March 09, 20269 min read

When a company decides to integrate blockchain rails into its payment infrastructure, the first instinct is to treat blockchain as "just another provider." The result is a Frankenstein architecture that doesn't survive the first production load spike.

The fundamental problem is that banking and blockchain rails operate with distinct paradigms. Banking rails are synchronous, message-based, operate during business hours, and depend on intermediaries. Blockchain rails are asynchronous, consensus-based, operate 24/7, and depend on cryptographic verification.

The Separation of Concerns Principle

Infracash's architecture isolates each responsibility in an independent layer: Ingestion, Compliance, Decision, Execution, Confirmation, and Observability. Each layer can be updated, scaled, and audited independently.

Decision Layer: The Orchestration Brain

Instead of routing operations to a fixed rail, the Settlement Orchestration Engine evaluates multiple variables in real time: cost, speed, jurisdiction, availability, and regulatory constraints. The decision is deterministic and auditable.

Execution Layer: Rail Abstraction

The Execution layer abstracts differences between rails into a unified interface. New rails can be added without changing other layers.


References: Cockroach Labs (2026), KPMG Payments Modernisation (2025), Finextra (2025).

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