Blockchain technology is increasingly being considered by major corporations as a viable tool for financial operations.
As blockchain’s capabilities for handling funds transfer advance beyond short-lived trends and digital tokens to focus on international business payments and financial resource management, corporate executives are now facing a practical question.
Specifically, how does this innovative digital financial framework function, and how can financial decision-makers leverage it to facilitate quicker, more efficient, and more economical fund transfers?
For CFOs and corporate treasurers, the key is understanding not just the concept but the tiered architecture of blockchain systems. These layers, designated as Layers 0 through 3, represent different components of the blockchain structure, from the fundamental communications networks to the interfaces that interact with users and enterprise resource planning (ERP) systems.
Circle, for instance, recently introduced Arc, a Layer 1 blockchain solution designed for institutional-grade stablecoin transactions, foreign exchange activities, and capital market operations. Similarly, Nuvei has revealed plans to utilize stablecoin networks to enhance its global payment processing functionalities. Further news indicates that Stripe is working on developing a new blockchain in collaboration with Paradigm, a venture capital firm that specializes in the cryptocurrency sector.
A comprehensive understanding of the terminology and technical framework surrounding enterprise-focused blockchains is becoming essential at the executive level. Similar to how traditional finance developed specific systems for communication (SWIFT), settlement (ACH, Fedwire), and compliance (anti-money laundering and know your customer), blockchain layers correspond to similarly dedicated tasks but offer varying degrees of speed, expense, and adaptability.
This is the new digital asset vocabulary for CFOs. PYMNTS can provide guidance on how to interpret it.
See also: Understanding Crypto Terminology: A Guide for CFOs
A Breakdown of Blockchain Layers for Finance Professionals
Blockchain networks are structured around four core layers, each serving a unique function.
Layer 0 forms the basic framework of blockchain ecosystems, acting as the fundamental protocol that connects different blockchains through interoperability, consensus mechanisms, and data exchange. For CFOs, Layer 0 is similar to a corporate WAN or the internet backbone: a critical infrastructure component that allows various systems to communicate. In terms of payments, it can improve reconciliation procedures across different geographic locations, blockchains, and regulatory environments, creating a streamlined operating system.
Layer 1 acts as the foundation blockchain layer, managing transaction records and primary state modifications, such as balances and contracts. Prominent examples include Ethereum, Solana, Bitcoin, and now Circle’s Arc. For financial leaders, this is where stablecoins exist, making it the digital equivalent of Fedwire or SWIFT’s main ledger. Regarding USDC or EURC transactions, Layer 1 systems enable the settlement of actual monetary value, often in a matter of seconds, providing liquidity and confidence to corporate finance departments.
Layer 2 serves as the scalability solution, operating on top of Layer 1 blockchains to process transactions externally before periodically updating the base layer. This structure enhances throughput, reduces costs, and boosts efficiency. For CFOs, Layer 2 functions as a performance enhancer, ideal for high-volume, low-value transactions like international payroll processing or small vendor payments. Layer 2 solutions can cut costs by over 90% compared to Layer 1 settlement.
Layer 3 offers the application interface, linking smart contracts and blockchain infrastructure with user-facing tools, such as wallets, APIs, dashboards, and ERP integrations. Examples include Fireblocks, Circle’s APIs, Chainlink, and enterprise blockchain software development kits (SDKs).
From a CFO’s viewpoint, Layer 3 is where financial and technical teams collaborate. It defines the efficiency with which an ERP system can generate a purchase order and trace it to real-time settlement, or how treasury teams can monitor on-chain liquidity, thus improving operational transparency throughout the company.
Read also: The Central Role of Trust in Data Management
Key Considerations for CFOs Evaluating Blockchain Payment Systems
The layered architecture of blockchain is a deliberate design, not a flaw. Just as cloud computing separated servers, storage, and applications into modular layers, blockchain is performing a similar process for value transfer.
As these layers become more defined, CFOs can view blockchain not as a single entity but as a customizable set of components with distinct advantages and disadvantages.
However, this modularity requires understanding. CFOs who grasp how each layer fits into the broader digital asset framework will be better equipped to leverage its benefits, including reduced transaction costs, faster cash conversion cycles, and automated compliance.
To illustrate this, consider an example of a $50,000 purchase order (PO) for IT equipment, sourced internationally, paid using stablecoins, and settled on-chain.
First, the PO is created via Layer 3, where an ERP system like SAP initiates the PO using an integrated blockchain API (such as Circle or Fireblocks). A smart contract registers the PO on the blockchain, embedding terms such as payment terms, counterparty wallet details, and invoice matching criteria.
Next, funds are moved to a Layer 2 escrow contract to minimize fees. AML/KYC checks are initiated using Layer 3 compliance systems (such as Chainalysis or TRM), leveraging Layer 2’s programmable features.
Upon confirmation of delivery, the smart contract releases the funds, which are then settled in USDC on a Layer 1 network, like Arc. Settlement is immediate, verifiable, and compliant, with metadata incorporated.
Reporting and reconciliation occur across Layers 0 and 3, with Layer 0 protocols synchronizing transaction details across multiple chains, if needed (e.g., multi-geo vendors). Layer 3 dashboards deliver reports to treasury systems, automatically recording currency exchange rates, timestamps, and counterparties.