Digital Euro vs e-CNY vs Digital Rupee: CBDC Architecture Compared
Digital euro, e-CNY and digital rupee compared: ledger design, tiered intermediaries, offline payments and privacy. Systems analysis, not advice.
x402 and HTTP 402: Machine-to-Machine Payments for AI Agents with Stablecoins
How x402 revives HTTP 402 for pay-per-request APIs and AI agents: payment flow, facilitators, stablecoin settlement, security risks and trade-offs.
Passkeys and FIDO2 for Payment Authentication: PSD2 SCA Architecture Guide
How passkeys (FIDO2/WebAuthn) meet PSD2 strong customer authentication: 3-D Secure integration, dynamic linking, recovery flows and fraud trade-offs.
Bitget $387.5M Breach: Third-Party Zero-Day and Exchange Security Architecture
Bitget lost $387.5M via a third-party vendor zero-day. Reported facts, custody and hot-wallet lessons, and vendor-risk controls for crypto platforms.
Open Standard OUSD Stablecoin: Architecture, Reserves, Multi-Chain Design
Open Standard launched OUSD on Oct 1, 2026 with Visa, Mastercard, Coinbase, Stripe and Shopify. Reserve design, multi-chain issuance and engineering impact.
Instant Payments Fraud Architecture: Real-Time Risk Scoring at Rail Speed
Designing fraud and risk controls for irrevocable instant payments (FedNow, RTP, SEPA Instant): latency budgets, scoring pipelines, confirmation of payee.
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.
Fact-Check: Did a Quantum Computer Break RSA-2048 in 2026?
Fact-check of viral claims that a quantum computer broke RSA-2048: what was actually factored, qubit requirements and NIST PQC deadlines.
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.
TI MSPM0G5187 and AM13Ex: TinyEngine NPU Edge AI Microcontrollers
Texas Instruments MSPM0G5187 and AM13Ex put a TinyEngine NPU inside a microcontroller. What it runs, how it compares with Cortex-M55 Ethos-U and when to choose it.