PriorMark establishes a forensic timestamp for your intellectual property — creative work, inventions, trade secrets, or any other content — at the exact moment you submit. A SHA-3/512 cryptographic fingerprint of your content is computed in your browser and written to the Hedera public ledger, creating a permanent, independently verifiable record that you possessed specific content at a specific moment in time.

Yes. The Hedera ledger is a global, public record. Under the European Patent Convention and Chinese patent law, a prior public disclosure can invalidate a later-filed patent for lack of novelty. In the US, 35 U.S.C. § 102(a)(1) explicitly covers prior art that is “otherwise available to the public.”

Courts in France and China have already accepted blockchain timestamps as valid IP evidence in disputes.

Only the hash — not your content. A SHA-3/512 cryptographic hash is a fixed-length fingerprint of your submission. It proves you possessed specific content at a specific time without revealing what that content is. When you need to prove ownership, produce the original — recompute the SHA-3/512 hash and compare it to the sealed ledger record to confirm it is authentic and unchanged.

No. The ledger records only the cryptographic fingerprint of your content — not the content itself. Unless you choose to disclose your work, no one can learn anything about your IP from the ledger entry.

On the Proof + Storage tier, your files are encrypted with AES-256-GCM before upload. Only you hold the decryption key — we cannot access your content.

A cryptographic hash is a one-way mathematical function: it converts any input — a paragraph, a PDF, an audio file — into a fixed-length string of characters. The same input always produces the same hash. Change one character and the hash changes completely.

Because it's one-way, you cannot reverse the process to recover the original content from the hash alone. This makes it ideal for proving you possessed something without revealing what it was — and for verifying later that a file matches a sealed record exactly.

Hedera is a public distributed ledger technology (DLT) governed by a council of major independent organizations. It uses the hashgraph consensus algorithm, which achieves a higher formal security grade (aBFT) than any blockchain, with faster finality and a fraction of the energy use.

Most importantly for evidentiary purposes: Hedera provides millisecond-precision consensus timestamps with network-level fairness guarantees — the timestamp is assigned by the network itself, not by any single party. That makes it significantly harder to dispute in a legal proceeding.

No — and that's the point. Hedera is technically not a blockchain. It's a hashgraph-based distributed ledger that's faster, greener, and provably more secure. Where blockchains use sequential blocks and probabilistic finality, Hedera's hashgraph builds a directed acyclic graph (DAG) through a gossip about gossip protocol — delivering absolute finality, mathematically proven aBFT security, and ~0.000003 kWh per transaction.

We use the word “blockchain” because it's the familiar shorthand. The reality is better.

Both tiers record the same SHA-3/512 fingerprint on the Hedera ledger and establish the same permanent timestamp.

Proof-Only

Your files are fingerprinted locally in your browser and never uploaded. You receive a ledger record with your hash and timestamp. To verify later, you produce the original files yourself — they are not stored with us.

Proof + Storage

After fingerprinting, your files are encrypted with AES-256-GCM in your browser before upload. We store only the encrypted ciphertext — your decryption key never leaves your hands.

Proof-Only

No. Your files are fingerprinted locally and never sent to our servers. We receive only the hash.

Proof + Storage

We store only the encrypted ciphertext — encryption happens in your browser before any files reach our servers. Your decryption key never leaves your device and we have no copy of it.

No. SHA-3/512 is a one-way function — there is no known mathematical technique to reconstruct the input from the hash output. An attacker would need to already possess the content, hash it, and compare — which means they'd need the content first. The ledger entry reveals only that something was submitted at a timestamp, not what it contained.

Content submitted under Proof + Storage is encrypted with AES-256-GCM before it leaves your browser — the same standard used by governments and financial institutions. Fingerprinting uses SHA-3/512, the NIST-standardized successor to SHA-2.

Yes. Three landmark rulings:

United States (2024): In United States v. Sterlingov (U.S. District Court, D.C. · 2024 WL 860983), the court applied the Daubert admissibility standard and accepted blockchain records as reliable, immutable, and chronological evidence — characterizing the ledger as a “decentralized, immutable, chronological, public ledger.” This establishes the foundation for blockchain timestamps to possibly be admitted in US federal court proceedings.

France (2025): The Tribunal Judiciaire de Marseille, in AZ Factory v. Valeria Moda, became the first European court to explicitly recognize blockchain timestamping as valid IP evidence — awarding €11,900 in damages plus a full injunction.

China (2018): The Hangzhou Internet Court, in Huatai Media v. Daotong Technology, became the first court worldwide to admit blockchain-preserved records in litigation. China's Supreme People's Court subsequently codified this as a binding national evidentiary standard.

About 60 seconds from start to finish. You fill in your title and description, attach any supporting files, complete payment, and your fingerprint is recorded on the Hedera ledger. No blockchain wallet, no crypto knowledge, and no technical expertise required.

No. PriorMark handles all blockchain interaction on your behalf. You never hold tokens, manage wallets, or interact with the Hedera network directly. All you need is a browser and your files.

Any file type — PDFs, audio files, video, images, source code, design files, spreadsheets, ZIP archives, or any other format. The SHA-3/512 fingerprinting process works on the raw bytes of any file regardless of format.

What matters is that you keep the original file exactly as submitted — even a single bit change produces a completely different hash.

Yes — but the timestamp will reflect when you submitted, not when the work was created. If your work is already public, a submission now still creates a verifiable record of current possession.

That said, the greatest evidentiary value comes from submitting before sharing or publishing. A timestamp that predates any dispute is significantly stronger than one created after the fact.

No. You can submit as many times as you like — each creates a separate, independently verifiable ledger record. For evolving work, submitting iteratively (early drafts, working versions, final) builds a stronger chain of possession than a single submission at the end.

Yes — for anything involving formal IP protection, licensing negotiations, or litigation strategy. PriorMark provides a forensic timestamp and proof of prior possession; the legal strategy for deploying that record in a specific dispute is a question for a licensed attorney. We are not a law firm and nothing on this site constitutes legal advice.

Detail matters significantly. A hash of a vague one-sentence description is far weaker than a hash of a thorough, specific disclosure. The more complete the content inside the hash, the stronger your position if you ever need to produce the original. Include:

• A clear title and detailed description of what the work, invention, or secret is
• How it works or was made — the process, technique, composition, design, or creative method
• Supporting material: files, recordings, diagrams, code, schematics, stems, or drafts
• Scope: what variations, versions, or applications does this cover?

Yes — and for evolving projects, you should. Each submission creates a new timestamp for that specific version. Submitting early concepts, working drafts, and final versions builds a chain of dated development that establishes the full scope and timeline of your work, not just the endpoint. Earlier is always better.

No. Once a hash is written to the Hedera ledger, it is permanent — that immutability is what makes the timestamp trustworthy. You can add new submissions for updated versions of your work, but existing records cannot be altered or deleted. This applies to us as well: we have no ability to modify or remove your ledger records.

Your proof of prior possession is designed to survive without us. The SHA-3/512 hash and your submission timestamp are permanently recorded on the Hedera public ledger — accessible to anyone via HashScan, regardless of whether PriorMark exists.

If we ever cease to operate, we commit to providing 30 days' notice via email and keeping the self-verification guide accessible during that period. To verify your record independently, you need only your original files and your HashScan link — no PriorMark account required.

Every submission includes a link to the public ledger entry on HashScan. To verify independently:

1. Locate your original files
2. Compute a SHA-3/512 hash of the file(s)
3. Compare your computed hash to the hash recorded on the ledger
4. Check the ledger timestamp on HashScan

If the hashes match, your content is authentic and the timestamp is the Hedera network's — confirmed entirely independently of PriorMark.

No. PriorMark records only the SHA-3/512 cryptographic fingerprint of your content — not the content itself. The ledger entry proves something was submitted at a specific time without revealing what it contained. Your actual formulas, processes, algorithms, or documents never touch the public ledger.

On the Proof + Storage tier, files are encrypted with AES-256-GCM before upload — even we cannot read them. Your trade secret status is not compromised by a PriorMark submission.

Under the Defend Trade Secrets Act (DTSA) and Uniform Trade Secrets Act (UTSA), proving misappropriation requires establishing that you possessed the trade secret before the alleged theft occurred. A PriorMark forensic timestamp creates an independently verifiable record of prior possession — established on the Hedera public ledger before you shared the information with anyone.

In a proceeding, you produce the original content, any party can recompute the hash and confirm it matches the sealed ledger record, and the Hedera network's timestamp establishes when it was first recorded. That chain of custody is difficult to dispute.

Yes — and you should. PriorMark is not a substitute for trade secret law compliance. Under the DTSA and UTSA, maintaining trade secret status requires taking reasonable measures to protect secrecy — NDAs, access controls, and internal confidentiality policies remain legally required.

What PriorMark adds is a forensic layer: a timestamped record of prior possession that your counsel can present as evidence in any misappropriation proceeding. The two work together, not in place of each other.

Under both the DTSA and UTSA, a trade secret is information that (1) derives independent economic value from not being generally known or readily ascertainable, and (2) is subject to reasonable measures to maintain its secrecy. This can include formulas, patterns, compilations, programs, devices, methods, techniques, or processes.

The key requirements are economic value from secrecy and active protection measures. PriorMark addresses documentation of prior possession; your internal security policies address the “reasonable measures” standard.

Yes — and iterative submission is one of the most effective ways to use PriorMark for trade secrets. Each timestamp creates a dated record of that version, building an auditable chain of custody that documents the full development timeline.

If ownership is ever challenged, you can demonstrate not just that you had the secret, but when each element was developed and in what sequence.

In a misappropriation proceeding, you produce the original content only when legally required — typically under a protective order that limits disclosure to the court and opposing counsel. The forensic timestamp was already sealed before any disclosure was needed, so the timing of your possession is established before you ever have to reveal what the secret contains.

Consult your attorney about protective orders and staged disclosure strategy.

No — and it doesn't try to. Copyright exists automatically from the moment of creation in most jurisdictions, but formal registration with the US Copyright Office provides additional benefits: the ability to sue for statutory damages, attorney's fees, and a public record of ownership.

A PriorMark forensic timestamp does something different: it creates an independently verifiable record proving you possessed specific content at a specific moment — before it was published, shared, or disputed. The two are complementary. A timestamp is particularly valuable when authorship or creation date is contested, or when a collaboration breaks down and credit is disputed.

Before — always. Once work leaves your hands, the timeline of who had what and when can become contested. A PriorMark forensic timestamp established before you share a beat, send a design, or hand off stems creates an independently verifiable record of what existed at that moment.

If a dispute arises later, that record predates any claim from a collaborator, client, or partner. Think of it as closing the session before you open the door.

Yes — and you should. A PriorMark forensic timestamp on an early draft or work-in-progress is often more valuable than one on a finished piece, because it establishes that you were developing the work before anyone else can claim they created it.

Submit early, submit often. Each version creates a dated point in your creative timeline.

Submit now — but understand what the timestamp will and won't show. A record created today proves you possess this content today; it doesn't retroactively prove you possessed it earlier. If you're already in a dispute, a new submission has limited value as evidence of prior creation.

The real value of PriorMark is in submitting before disputes arise. That said, a submission now can still document the current state of your work and be useful in future contexts.

The earlier timestamp establishes the stronger evidentiary position. If two parties both claim to have created the same work, the one with the earlier verifiable record has a stronger case — which is exactly why submitting as early as possible matters.

PriorMark doesn't adjudicate disputes; it creates the independently verifiable record that courts and arbitrators weigh.

Submit at the end of each session, not just at the end of the project. For each session, timestamp the specific files created or contributed that day — stems, lyrics, session files, drafts. When the project is complete, you'll have a chain of dated records documenting each contributor's work at the time it was created.

In a dispute over credits or royalties, each timestamped session becomes evidence of what was contributed and when — before the money was on the table and before anyone had reason to misremember.

No. A PriorMark submission does not grant exclusive rights of any kind. It does not constitute a patent filing, create patent-pending status, or confer any rights under patent law. Only a granted patent provides exclusive rights to make, use, or sell something.

What PriorMark does provide is something different and complementary — a forensic timestamp that serves as independently verifiable, tamper-proof evidence that you possessed specific content at a specific moment in time. That evidence can carry real weight in legal proceedings, disputes, and negotiations.

A provisional patent application gives you 12 months of “patent pending” status and establishes a priority date in the US patent system — but it eventually becomes public, and it lapses if you don't follow up with a non-provisional application within that window.

A PriorMark submission costs a fraction of a provisional, never becomes public, and remains valid indefinitely. It doesn't grant patent rights, but it establishes a dated record that can serve as prior art or support inventorship disputes. You can still file a patent later — and your PriorMark record will predate anything filed after it.

Potentially, yes — if your submission predates the patent's priority date and your content is, or can become, publicly accessible. Under 35 U.S.C. § 102(a)(1), prior art includes anything “otherwise available to the public” before a patent's effective filing date. A ledger record of a publicly accessible disclosure that predates the patent's priority date can support Inter Partes Review (IPR), reexamination, or invalidity arguments in litigation.

For private (encrypted) submissions, you would need to produce and disclose the original content to make a prior art argument. Consult a patent attorney before initiating any IPR or invalidity proceeding.

Yes. A PriorMark record has value independent of any patent filing. Even if you never file, your forensic timestamp can:

• Serve as prior art that prevents others from patenting the same idea after your submission date
• Support a § 273 prior commercial use defense if someone later patents similar technology
• Provide documented evidence of prior possession in any dispute about who developed what and when

If your submission predates a patent's filing date and your content is, or can become, publicly accessible, your record may constitute prior art under 35 U.S.C. § 102(a)(1). This can be raised in Inter Partes Review (IPR), reexamination, or litigation to challenge the patent's novelty.

The earlier your submission, the stronger the prior art position. Consult a patent attorney before initiating any challenge.

Yes. The Hedera ledger is a global, public record. Prior art standards vary by jurisdiction, but the underlying principle — that a public record predating a patent's filing date can invalidate it for lack of novelty — is recognized across major patent systems.

The European Patent Convention and Chinese patent law both apply absolute novelty standards. Courts in France (2025) and China (2018) have already accepted blockchain timestamps as valid IP evidence. For jurisdiction-specific strategy, consult a local patent attorney.

35 U.S.C. § 273 provides a personal defense against patent infringement for anyone who commercially used an invention in good faith at least one year before the patent's effective filing date — provided the use was independently created.

Unlike § 102 (which can invalidate the patent for everyone), the § 273 defense is personal and non-transferable: it allows you to continue your existing commercial use even if the patent stands. The statute requires proof by “clear and convincing evidence.” A PriorMark timestamp predating the relevant window creates an independently verifiable record that directly supports meeting that burden.