PriorMark
Intellectual Property Protection
How It Works
The Process Defined
PriorMark creates a permanent, tamper-proof record of your ideas the moment you submit.
No blockchain wallet, knowledge or technical expertise required.
Submission
Interactive Preview →1
Choose your submission path
Proof-Only or Proof + Storage — both record a permanent timestamp on Hedera.
- Fingerprint only (Proof-Only) — your files never leave your device. Only the SHA-3/512 hash is submitted, giving you a tamper-proof timestamp without exposing your content to anyone.
- Fingerprint + encrypted file storage (Proof + Storage) — everything in Proof-Only, plus your files are encrypted with AES-256-GCM in your browser before upload and stored in redundant, enterprise-grade cloud infrastructure. Only you hold the decryption key — we never have access to your content.
2
Describe your IP
Your title and description become your permanent, publicly readable ledger record.
3
Attach your content
Fingerprinted in your browser — your files stay on your device.
- Proof-Only — only the fingerprint ever leaves your device. Your files stay exactly where they are. Even a single character change produces a completely different hash, making the fingerprint tamper-proof.
- Proof + Storage — your files are encrypted with AES-256-GCM directly in your browser before anything is transmitted. We receive only ciphertext — never your originals. The decryption key never leaves your device.
4
The fingerprint is sealed on the public ledger
Written to Hedera's immutable public ledger — permanently, in seconds.
5
You receive your record file and timestamp
Your claim ID, content hash, and HashScan link — independently verifiable proof, forever.
- Claim ID and submission timestamp
- SHA-3/512 content hash and per-file fingerprints
- Hedera topic ID, HCS sequence number, and HashScan link
Retrieval
Interactive Preview →1
My Submissions dashboard
Sign in to see all your submissions with timestamps, contenct fingerprints, and ledger links.
- Your submissions appear as a list — each showing its claim ID, timestamp, and tier badge.
- Use the Ledger Record button on any submission to view its full Hedera details and HashScan link.
- Proof + Storage: use the Manage Files button to view, download, or delete your stored encrypted files. Billing adjusts automatically when files are removed.
2
Access your record & files
Download your record file and manage encrypted files if you chose Proof + Storage.
- The Ledger Record modal shows your full technical details: SHA-3/512 content hash, individual file fingerprints, Hedera topic ID, HCS sequence number, and HashScan link.
- Download your record file (JSON) directly from here — your primary proof artifact containing all identifiers needed for independent verification.
- Proof + Storage: the Manage Files modal lets you view and download your individual encrypted files.
3
Independent ledger verification
Verify your claim without involving us — all you need is your record file or My Submissions.
- Open your HashScan link — the raw ledger entry is public and requires no login to PriorMark or any account.
- Locate your SHA-3/512 content hash in the ledger entry.
- Run SHA-3/512 on your original files locally and compare. If they match, your content is proven to have existed at that timestamp — verified without trusting PriorMark at all.
- Proof + Storage: download your encrypted files directly from My Submissions to confirm your stored content is intact alongside the ledger record.
Why it matters
Your IP stays yours. The content of your submission is never uploaded or disclosed — only a cryptographic fingerprint reaches the ledger. No one can learn what you submitted unless you choose to reveal it.
The proof is public — not your IP. Anyone — a court, a patent examiner, an investor — can independently verify the fingerprint and timestamp on the ledger, without involving us and without seeing your content.
No one can alter, delete, or backdate your record. Not us, not Hedera, not anyone.
You were here first. Your IP's timestamp is permanently on the Hedera public ledger.
What this proof establishes
The ledger record proves that someone possessed a document whose content hashes to a specific value at a specific moment in time. Because hash functions are one-way, you cannot reverse-engineer the original idea from the hash — the ledger reveals nothing about your idea until you choose to disclose the content.
When you do disclose — in a dispute, to a potential partner, or to a buyer — you can demonstrate that your disclosed content produces the exact same hash that was recorded on the ledger at the timestamp, and that the timestamp predates any competing claim.
This is not a patent and does not replace legal counsel. It is a form of prior art evidence — a cryptographically strong timestamp you control and can produce on demand.
A public immutable ledger record can invalidate a later-filed patent for lack of novelty under US law (35 U.S.C. § 102(a)(1)), European absolute novelty rules, and Chinese patent law — provided the disclosure predates the patent's priority date and is publicly accessible. Courts in France, China, and elsewhere have already accepted blockchain timestamps as valid prior art evidence. See court precedents →
Independent verification
Every claim links to its record on HashScan, the public Hedera block explorer. You can paste the transaction ID there and see the raw ledger entry — submitted timestamp, topic ID, and message — without any involvement from PriorMark.
To verify a claim yourself, you only need your original file and the fingerprint from the ledger. Compute SHA-3/512 on the file and compare. If it matches, the content is authentic and the timestamp is the ledger's. This works forever — no PriorMark account required.
Windows
Option 1 — Python (free, install from python.org). Open Command Prompt or PowerShell:
python -c "import hashlib; print('sha3-512:' + hashlib.sha3_512(open('C:\path\ o\yourfile.pdf','rb').read()).hexdigest())"
Option 2 — OpenSSL for Windows (download the free Win64 installer from slproweb.com, then open Command Prompt):
openssl dgst -sha3-512 yourfile.pdf # Compare the hex only — the output won't include the "sha3-512:" prefix
Option 3 — No install needed: open this SHA-3/512 tool in your browser, upload your file, and compare the result to the fingerprint on the ledger. Note: this sends your file to a third-party website — only use it for non-sensitive files.
macOS
Option 1 — Python (pre-installed on most Macs, or install from python.org). Open Terminal:
python3 -c "import hashlib; print('sha3-512:' + hashlib.sha3_512(open('/path/to/yourfile.pdf','rb').read()).hexdigest())"
Option 2 — OpenSSL via Homebrew (macOS ships with LibreSSL which does not support SHA-3; install the real OpenSSL first):
brew install openssl /opt/homebrew/opt/openssl/bin/openssl dgst -sha3-512 yourfile.pdf # Compare the hex only
Linux
OpenSSL (Ubuntu 22.04+ and most modern distros include OpenSSL 3 with SHA-3 support):
openssl dgst -sha3-512 yourfile.pdf # Compare the hex only # Or with Python: python3 -c "import hashlib; print('sha3-512:' + hashlib.sha3_512(open('yourfile.pdf','rb').read()).hexdigest())"
The output should match exactly what PriorMark recorded on the ledger. Your original files are your primary evidence — the ledger fingerprint proves they existed at that timestamp. Keep your files. No one can take away the proof.
© 2026 PriorMark. All rights reserved.