simpledmrv

Past visits

    Device key

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    Public key registration

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    One-shot anchor of your pubkey + creation timestamp to RFC 3161 TSAs and Sigstore Rekor. Closes the trust window between key creation and your first anchored visit — gives the pubkey an independent public-log proof-of-existence so attackers can't claim a swapped key was the original. Belt-and-suspenders alongside the external fingerprint registration above.

    Anchor proxy

    DigiCert/Sectigo TSAs don't send CORS headers. Defaults to the InterField-operated proxy at anchor-proxy.andrew-073.workers.dev; override with your own Cloudflare Worker (recipe in CHAIN-DESIGN.md) or clear to disable. Rekor may work direct without a proxy.

    Temperature unit

    °C

    About

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    Trashed visits

      Site

      First offline fix can take 30–60s. Hold the phone outdoors and stay still.

      Operator

      Kiln

      Feedstock

      Weather (optional)

      Observer

        Visit summary

        Duration
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        Events
        0
        Photos
        0
        Est. size
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        Recommended workflow / what each button does
        1. 🔍 Verify chain locally — sanity-check that this device's chain is internally consistent (event hashes match, signatures valid). No network needed. Safe to run any time.
        2. ⚓ Anchor (RFC 3161 + Rekor) — request external attestations of the current chain head from two audited CAs (DigiCert + Sectigo, RFC 3161 timestamps) and Sigstore Rekor (transparency log). Requires network. Each click adds 3 entries to chain.anchors — those are the receipts, not duplicate proofs. Recommended once, when service returns after the visit.
        3. 📦 Export bundle (ZIP) — package the visit (events, media, chain, anchors) into a ZIP for the recipient. Do this last.

        Re-anchoring: safe but rarely useful. Anchoring records an anchor_recorded event in the chain, which advances the head — so a second anchoring proves a slightly later state than the first. Useful only if you reopen the visit and add events, then want fresh attestations. The original attestations remain valid for the head they covered.