How the Federal Regulatory Data Hub lets compliance teams subscribe to regulatory events for specific entities — using the cross-agency entity bridge to watch OFAC, SAM, SEC, EPA, DOJ, and 25+ other lists simultaneously.
April 2026
6 dated technical articles. These pages record the methods and claims as published; follow each article's source links and update notes for its current scope.
How the Federal Regulatory Data Hub detects regulatory record changes and delivers them to subscribers: 10-minute OFAC sanctions window, 30-minute SAM debarment window, EDGAR 8-K filing webhooks, HMAC-signed Cloudflare Queue delivery with at-least-once semantics, per-entity and per-list subscription filters, and idempotency_key deduplication.
What shipped in Swarm SDK v0.4: the Situational Awareness API for shared position and sensor fusion, the EW Coordination protocol for spectrum interference, Adversarial Resilience features including traffic morphing and store-and-forward, and the RF Fingerprinting subsystem for passive emitter tracking. 463 total tests.
How the swarm coordination layer maintains a shared operational picture across 128 nodes without a central server: Ed25519-signed 124-byte position broadcast frames, an Extended Kalman Filter fusing GPS/IMU/barometric altitude into a 6-DOF state estimate, dead-reckoning fallback with quadratic uncertainty growth for up to 90 seconds without GPS, and a probabilistic gossip protocol achieving 94.2% frame delivery across a 2km × 2km field deployment.
How we ported the Swarm SDK cryptographic core to no_std Rust targeting the STM32H7 Cortex-M7: feature-gated std/embedded builds, 96KB static heap with cortex-m-alloc, pre-allocated VecDeque deduplication ring, in-place AES-GCM to avoid heap allocation, hardware AES accelerator integration (0.14ms vs. 0.61ms software), and binary size optimization from 1.2MB to 284KB with opt-level="z" and LTO.
How the Swarm SDK rotates cryptographic material without grounding the fleet — scheduled signed pre-key rotation on a 7-day timer, OTP replenishment when bundle drops below 20 keys, emergency revocation via gossip-flooded KeyRevocationAnnouncement, BKPSRAM zeroization with 0xFF pattern verification, and staggered rotation coordination across the mesh.