Orusd - Clearing Token · Technical White Paper & Audit Reference Release 2.0

Abstract

ORUSD — Version 2.0 ORUSD is a USD-denominated clearing token designed for direct account-to-account settlement on Sei EVM. It is implemented as a restricted ERC-20 token with 6 decimals and a deliberately narrow functional scope.Its primary purpose is clearing and settlement rather than market trading, speculative use or DeFi integration.Ordinary circulation is restricted to direct EOA-to-EOA transfers; approve() and transferFrom() are disabled, and ordinary transfers to smart-contract recipients are rejected. Minting and burning are explicit supply operations controlled by the manager.Authorized oracles may submit MINT or BURN requests but cannot directly alter token supply.Oracle requests remain valid for 24 hours and must be executed or rejected by the manager.External clearing references are protected against replay through single-use proof handling.The architecture therefore separates attestation authority from final settlement authority.ORUSD uses a restricted-recipient model for sensitive infrastructure addresses.The reference contract is based on OpenZeppelin ERC-20 and Ownable2Step components. Sei Testnet is the current public reference and integration environment.The verified reference deployment is:0x0c3a19455b898913A1DaD93d724c24062293dB5FCreation transaction:0xce15b298a4f1b0474e9c704996fd6d08c8d939d09def0eba8205998112c1ff15 The deployed source has been verified on SeiScan with matching bytecode and ABI.The ORUSD smart contract remains strictly separated from deposit, custody and collateral-management activities.Where an external USD-denominated escrow or custody layer is used, USDC issued by Circle is the recommended collateral asset. Such custody and escrow functions remain outside the ORUSD smart contract.This Zenodo archive contains the Solidity source code, ABI, flattened contract, and the ORUSD Technical White Paper & Audit Reference — Version 2.0.Author: Denis BouzonORCID: 0009-0007-8894-8902Osnias ClearingWebsite: https://www.osnias-clearing.com/orusd/orusd.html© 2026 Osnias Clearing. All rights reserved.