Civic government records monitor and tamper-evident archive
sentinel is a public archive of municipal government records plus a paid alert layer. Free to browse; subscribers follow municipalities and keywords and get email digests when council documents are captured, edited, or removed. Every document carries a SHA-256 fingerprint and a wallclock timestamp, making silent edits provable.
SHA-256 fingerprinting with append-only version history: silent edits are provable
Per-site scraper registry with a four-hour cadence and host-guard against redirect poisoning
AI summarization behind a kill switch; Inngest-backed digests with deduplication
Magic-link auth, Stripe subscriptions across three tiers