OpenSinop starts from a practical public-finance question: a department has collected fees and has bills to cover — what can it actually afford without touching restricted funds or money already committed elsewhere? It answers that with encumbrance-style commitment accounting in a Laravel application, tracking what is available versus reserved so a spend is only allowed when genuinely uncommitted funds exist. The app is modular (Modules/ with an Inertia/React frontend) and integrates Circle USDC rails through the team's own Laravel SDK, with packaged agent skills for working on Arc. It is a sizeable, multi-author codebase aimed at bringing disciplined fund accounting to on-chain money.
OpenSinop: institution-owned departmental finance on Circle Agent Wallets and Arc — policy-bounded collections, budgets, approvals, and verifiable USDC settlement.