Proof-of-capture · Media provenance
The Epistemic Suite helps you show your work is genuinely human.
Don't trust us, trust the device! Every capture includes a signed proof you can verify locally (Verifier CLI) or at ingestion (Epistemic Vault). Media Bridge then enriches metadata downstream without touching the original proofs.
Where C2PA and Content Credentials describe how a file was made and edited, Epistemic proofs are created at the moment of capture: tamper-evident, cryptographically signed, and verifiable by anyone.
Suite Flow
Verify capture proofs, then enrich and route metadata downstream.
Each product is focused. Together, they form a defensible chain of custody.
Epistemic Recorder
Android + iOS apps, plus the Epistemic Universal Box (EUB) for external camera workflows-all producing the same capture proofs, including randomized capture-time challenges recorded in the proof and visible in verification output.
Visit recorder.epistemicsuite.comEpistemic Vault
A cryptographically enforced verification boundary: nothing is accepted unless it is provably correct.
Visit epistemicvault.comEpistemic Media Bridge
Post-ingestion metadata operations: enrich, normalize, and route content without touching the original proofs.
In buildEach Recorder capture includes a tamper-evident proof created at capture time. Recorder hashes the media and signs a manifest; Vault re-verifies at ingestion and issues a receipt; the free Verifier CLI can verify the proof locally. Media Bridge is post-Vault and operates on metadata only.
Recorder computes hashes, builds a signed manifest, and embeds provenance at the source.
Verify at ingestion (Vault) or locally (Verifier CLI); both re-check hashes and signatures.
Media Bridge enriches and routes metadata downstream without altering or re-ingesting the original asset.
C2PA & Content Credentials
C2PA is the open standard behind Content Credentials: signed manifests that record which tools made and edited a file. It is an important step for media provenance, but a valid signature shows who signed a claim, not what happened in front of the lens. Epistemic Suite focuses on that moment of capture.
What C2PA does well
Cameras, editing tools, and platforms can attach and read signed provenance manifests, so a file can carry its history of creation and edits in a common format.
Where concerns come up
Credentials are often stripped when platforms re-encode uploads, and a missing credential proves nothing either way. A manifest is only as trustworthy as its signer, and AI generators and editing tools sign their output too.
What proof-of-capture adds
Epistemic Recorder issues randomized challenges to the camera during recording and binds them, with on-device hashes and device attestation, into a signed proof. Anyone can check it with the free, open-source Verifier CLI.
Media Bridge
Media Bridge is post-Vault. It connects distribution, post-production, and external metadata systems while keeping the original Vault-verified asset untouched. It is the connective tissue between verified capture and downstream workflows.
Video, audio, and photos.
Consistent metadata and identifiers after ingestion.
Preserve chain-of-custody while operating on metadata.
Verifier CLI
The Verifier CLI is an open-source command line tool that validates Epistemic capture proofs outside the Vault. It recomputes hashes, checks signed manifests, and produces a clear verification report you can share or audit.
It does not try to “prove reality” from pixels alone. It verifies the capture proof and whether the file matches it.
It is free for everyone because trust cannot depend on a gatekeeper. Anyone should be able to verify originals with the same rules, using their own machine.
Open Verifier CLI on GitHubOpen-source verifier for Epistemic capture proofs.
Recomputes hashes, validates signatures, and reports verdicts.
So verification stays independent, transparent, and widely usable.
Tell us what you are building and we will shape the right deployment.
Short answers for anyone looking for a defensible way to separate signal from synthetic noise.
Epistemic Recorder produces tamper-evident proofs at capture (hashes, signed manifests, device attestation, and randomized capture-time challenges recorded in the proof). Epistemic Vault re-verifies those proofs at ingestion, and the free Verifier CLI can verify them locally.
Evidence created by the recording device itself at the moment of capture, rather than added afterwards. Epistemic Recorder hashes media on the device, records the randomized challenges the camera executed while recording, and signs everything into a tamper-evident manifest backed by device attestation.
C2PA (the Coalition for Content Provenance and Authenticity) is the open standard behind Content Credentials: signed manifests that record which device or software created and edited a file. A valid credential shows who signed that history. On its own it does not show that a camera captured a real scene, and AI generators and editing tools sign their output too.
No. Epistemic proofs use their own manifest format, built from similar building blocks (CBOR manifests and COSE signatures), and they answer a different question. C2PA describes how a file was made and edited; an Epistemic proof shows that a real device captured it, including the randomized challenges the camera executed during capture.
Any proof embedded in a file, C2PA or ours, can be removed when a platform re-encodes an upload, and a missing credential proves nothing either way. What matters is keeping a verifiable original: Epistemic Vault re-verifies each capture at ingestion and issues a signed receipt, and the Verifier CLI can check the original on any machine.
Detectors analyze finished pixels and estimate whether something looks generated, which gets harder as generators improve and compression erases traces. Epistemic Suite does not guess from pixels. It verifies a proof made at capture time, and whether the file still matches it.
No. Media Bridge is post-Vault and handles metadata enrichment, normalization, and routing for downstream workflows. It does not re-ingest footage into the Vault and it does not alter the original proofs.
It means you can check the same proof at the boundary: Recorder creates it at capture time, and it is re-verified before it is accepted. Verification can happen in Vault or on your own machine with the free Verifier CLI.
Epistemic Vault is proudly EU-based — governed by European law, hosted in Europe, and designed to operate independently of US jurisdictional control.