Drop a Dynamic Feed evidence bundle — a signed, Bitcoin-anchored record of a real-world observation. This page checks the Ed25519 signature, the content-hash binding, the Merkle inclusion proof, and the Bitcoin anchor — entirely in your browser, with zero calls back to us. The verdict comes from math and Bitcoin, not from trusting Dynamic Feed.
Most "verified data" means trust the vendor's published key. Here, the signature proves Dynamic Feed asserted it, and the Bitcoin anchor proves the record existed at a point in time — witnessed by a chain nobody controls. So a bundle still verifies even if Dynamic Feed no longer exists. The only thing this page can't do purely offline is confirm the Bitcoin block is real — and that's "ask any Bitcoin node", i.e. trust Bitcoin, not us.
This same check runs in any browser, Node, Deno, or edge runtime via /verify-bundle.js, and fully offline (incl. the Bitcoin block) via the open Python CLI verify_bundle.py. One record carries it: a robot verifies the live signature before it acts; an adjudicator verifies the Bitcoin anchor after, if it's disputed.