Canton-Anchored Reference Architecture for Tokenized Deposit and RWA-ABL Integration: On-Ramp/Off-Ramp Design for Receivables, Inventory, and Private Credit Finance

Abstract

Tokenized deposits and tokenized real-world asset (RWA) asset-backed lending (ABL) have advanced along largely independent technical and regulatory tracks despite forming complementary halves of a single capital-flow architecture. This paper argues that the on-ramp/off ramp boundary between fiat-denominated deposit rails and on-chain collateralized credit is the binding architectural constraint on capital efficiency, settlement risk, and reconciliation overhead in tokenized small and medium-sized enterprise (SME) finance. It develops a Canton-anchored reference architecture that treats sub-transaction privacy, synchronization domains, and the Daml authorization model as first-class primitives, and addresses the cross-chain boundary explicitly through three patterns: messaging-protocol bridges (LayerZero, Chainlink CCIP, Wormhole), custody bridges, and native dual-issuance. The architecture is layered into settlement, asset, identity, orchestration, off-chain integration, and cross-chain boundary tiers, each analyzed through transaction cost economics, two-sided platform theory, network economics of standardization, and privacy as an economic primitive. An illustrative model compares Canton primary, EVM-based, and hybrid configurations across SME accounts receivable, inventory and equipment ABL, and private credit fund interests, producing scenario-based, indicative 50–80% reductions in total cost-per-dollar-financed for the headline A/R use case under stated assumptions. The paper is decision-oriented for banks, non-bank lenders, SME borrowers, and policymakers, and identifies regulatory anchors across the FDIC, SEC, BIS, Basel, FSB, and MiCAR frameworks. Canton-specific empirical data remain thinner than EVM data; the model is illustrative rather than empirical.

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