BUILDING IN PUBLIC · BUILD 48

It remembers what's real.
And proves it.

A durable provenance and consent layer for AI-era media. It records what is real, what changed, from what owned source, and under whose authority, in a form that survives the pipeline and that anyone can verify.

72 ledger tests green  ·  11 / 11 adversary attacks caught  ·  independently verifiable offline
The idea

Don't build AI that invents. Build AI that remembers.

Generative AI

Invents.

Trained on everyone's work. It produces plausible pixels from a prompt. It cannot tell you where a face came from, whether the performer agreed, or whether any of it was real. Impossible to prove, and impossible to defend.

Continuum Engine

Remembers.

Trained only on your production, its dailies, its lenses, its light. It repairs a shot from footage that actually exists. Every synthesized region names its sources, its approvals, and its consent. Provable frame by frame, and built to be defended.

How it works

Every repair walks the same chain of proof.

Detect the error, propose from real footage first, gate on consent, collect human approvals, render locked to the approved bytes, then seal with durable provenance. If no honest repair exists, the answer is a clean CANNOT. There is no generate anyway.

The hard problem

Consent has two clocks. Both have to be honest.

Rights change over time. Something authorized in 2019 can be narrowed in 2022 and withdrawn in 2024. Continuum keeps the two questions apart and answers each on its own: was this authorized at the moment it was used, and is it permitted right now. Revocation changes the future, never the past. Scope can only narrow, never widen.

Historical clock

Was authorized then

A use that was valid in 2021 stays a matter of record forever. Withdrawing consent later does not rewrite the past, and no one can quietly erase a use that happened.

Live clock

Permitted now

The current answer reflects every narrowing and revocation to date. A withdrawn grant blocks new use immediately, without touching the history behind it.

◆ How each consent event is sealed

Every event (grant, use, narrow, revoke) is written to an append-only hash chain. Each one carries both halves of a time interval, so it cannot be forged, reordered, or backdated by whoever holds the record.

Upper bound  RFC 3161 timestamp Lower bound  committed external beacon Batch  Merkle root, RFC 4998 ERS Per event  recomputable inclusion proof
Don't take our word

Verify it yourself.

The check is not a service we host. It is a standalone program that ships with the record and runs on your machine, offline, with no access to us and no private keys. It recomputes every hash, timestamp, beacon and proof, and reaches the same verdict we would. If anything was edited, deleted, reordered or backdated, it fails loud and gives no verdict. A tampered record gets no confident answer, by design.

verify_ledger.py
$ python3 verify_ledger.py sample_genuine.json --authority AUTH-0007 --use FILM
  [PASS] hash_chain   [PASS] timestamp   [PASS] beacon
  [PASS] merkle_root  [PASS] merkle_inclusion   [PASS] archive_timestamp
  INTEGRITY: VERIFIED   every hash, timestamp, beacon and proof recomputed
  verdict:  was authorized in 2021 = True    permitted now = False (revoked)
  exit 0

$ python3 verify_ledger.py sample_tampered.json
  [FAIL] entry_hash  ->  seq 0: body does not match its hash
  INTEGRITY: FAILED   this ledger was altered
  VERDICT: WITHHELD   a tampered record gets no confident answer
  exit 1

The offline verifier is open source. Read it, run it, and try to make a tampered record pass: github.com/Dr-PampersMuffin/continuum-verifier.

Durable provenance

Proof that outlives the file format.

Proving an element was built honestly, from owned material, with consent, usually means tagging the file. That works until the footage hits a real pipeline. Transcode it, recompress it, change the format, and the tag is stripped. The proof is gone. Continuum takes the opposite approach: it keys the proof to the content itself, so it survives the pipeline and works across any tool a facility already uses.

The usual way

Fragile.

Embedded credentials live inside the file. Transcoding, recompression, and format changes strip them. Once the tag is gone, you cannot prove a negative.

Continuum

Durable.

The record is keyed to the content itself. Re-hash the bytes and the full chain comes back: owned sources, approvals, consent, and whether AI was involved. It survives the pipeline and spans every tool, not just ours.

The proof that survives anything

The Naked Frame

Take a sealed frame. Recompress it, resize it, rename it, strip every trace of metadata. Then hand it to anyone, offline, with no access to our system. The provenance link still comes back, recovered from the pixels themselves. When there is no reliable match, it says so rather than guessing. Embedded credentials die the moment a file is re-encoded. This does not.

Not a mockup

The record stands up to attack.

We played the attacker against our own ledger: edit a sealed grant, delete a use, reorder events, strip a timestamp, backdate a revocation and re-seal the entire chain, and insert a phantom narrowing to rewrite history. An independent verifier caught every attempt.

72
ledger tests green
11/11
adversary attacks caught
2
time bounds sealed per event
0
verdicts on a tampered record
◆ Built in public, stated plainly

The two-clock logic, the append-only authority ledger, its RFC 3161 timestamps, the Merkle batching, and the standalone verifier are operational now and independently checkable. In this build the timestamp authority and the external beacon are local development stand-ins; the protocol and the verification are identical to production, which points the same code at a public qualified timestamp authority and an external public beacon by configuration. The deep networks for photorealistic reconstruction are the next build, and they plug into gates that already exist, inheriting isolation, consent, and provenance from day one. This proves time, order, and integrity, not the truth of the underlying content. We would rather show you exactly where we stand than sell a mirage. That honesty is the whole point of the product.

The moat

Five laws, compiled into code.

Most tools bolt on safety after the fact. Here it is the foundation, enforced by the system, not promised by a policy.

LAW 01

One production, one model

A model learns a single film and can only ever serve that film. Checked at render time, fails closed.

LAW 02

Repair, never invent

Real footage first; generation only as a bounded last resort; an honest CANNOT when nothing works.

LAW 03

Consent is the gate

Nothing touches a performer's identity without a two-person consent scope. Synthesis is structurally ungrantable.

LAW 04

Total provenance

Every action in a tamper-evident chain. Approvals bind to the exact bytes approved.

LAW 05

Humans decide

The machine proposes; people approve. Higher risk demands more signatures, from different people.

THE RESULT

Trust, by design

The first AI post system a studio's legal team and a performer's union can both sign off on.

Who it's for

Three problems, one architecture.

STUDIOS & POST

Repairs you can defend

Fix a shot from footage that exists instead of reshooting, and carry proof of how every frame was made.

PERFORMERS & GUILDS

Consent you can verify

Every operation that touches an identity is recorded with its consent basis, maintained continuously, not assembled under legal pressure.

RIGHTS HOLDERS & PLATFORMS

Authority that travels

A portable, independently checkable record of who authorized what, for how long, and whether it still holds at the moment of use.

Built for the 2026 regimes turning disclosure and consent into a requirement
NO FAKES Act EU AI Act, Article 50 California AB 2602 California AB 1836 Tennessee ELVIS Act FRE 707 and 902(13)/(14)
Get in touch

Request access or a conversation.

For pilot partnerships, studio evaluations, investment, or advisory conversations. The offline verifier is open source. Deeper technical materials, including the authority-anchor note and the engine codebase, are available under NDA to serious parties.

→ Embur, Continuum Engine
→ Dr Z, Founder
→ pampersmuffin@gmail.com