Fed GENIUS Act Stablecoin Proposed Rules: Reserves, Capital, Architecture
On Sept 24, 2026 the Fed proposed GENIUS Act stablecoin rules. What they say on reserves, capital, applications, and what issuer engineering teams must build.
Stablecoin Settlement on Card Networks: Visa and Mastercard Architecture
How Visa and Mastercard integrate stablecoin settlement with existing authorization, clearing and treasury flows, and what the CLARITY Act stall means for system design.
Circle Arc Mainnet: Architecture of a Stablecoin-Native Layer 1
Circle launched Arc, a USDC-native Layer 1, on Sept 16, 2026 with validators from BlackRock, Visa and Mastercard. A systems analysis of its design (not advice).
Stablecoin Payment Infrastructure Architecture (2026)
A reference architecture for stablecoin payment rails: on/off-ramps, settlement, treasury, custody, and compliance - a systems analysis, not financial advice.