The primary objective of the UDPN is to provide a messaging layer for global cross-border payments of CBDCs and stablecoins. With most businesses off-chain, the UDPN structure has been built to link business IT systems with centralized and decentralized currency systems, using Hyperledger BESU as the permissioned network framework. The foundational architecture of the network is a permissioned, decentralized network of on-chain Validator Nodes engaging with off-chain Business and Transaction Nodes. Off-chain Transaction Nodes operated by commercial banks will securely connect central banks and stablecoin systems, issuing digital currencies to the UDPN. At the same time, Business Nodes will allow any business system to connect to the UDPN. In addition, the on-chain Transaction Audit and Reporting (TAR) Nodes facilitate the work of regulators and auditors in monitoring the transactions of their respective digital currencies. The UDPN is primarily a messaging platform and does not compete with currencies in circulation or issue tokens. Instead, it has decentralized IDs (DIDs) linked with the digital wallets or accounts in the corresponding public chains or CBDC systems. Furthermore, all transactions are performed within each currency system, and shared data is kept to a strict minimum (maintaining end-users’ privacy). Thus, the UDPN network has the advantage of being light on data.