Blockchain Timestamp vs Patent
Short version: a patent is a legal right; a blockchain timestamp is a piece of evidence. They answer different questions, and one can never stand in for the other.
Not legal advice. This page is general information from a software company, not from a law firm. Examples are mostly from US law; rules differ by country. If the stakes are real, talk to a qualified IP attorney.
What a patent gives you
A granted patent lets you stop other people from making, using or selling the invention described in its claims — even people who invented the same thing independently and never heard of you. Nothing else on our comparison page does that. The price is a formal process: a written application, examination, fees, and usually a patent attorney.
In the United States the official fees are lower than most people expect. A provisional application costs $325, or $130 for a small entity and $65 for a micro entity. For a full (non-provisional) utility application, the basic filing, search and examination fees add up to $2,000, $800 or $400 respectively.[1] The expensive part is professional drafting and prosecution, which is not an official fee and varies with the complexity of the invention.
A provisional application deserves a special mention because it is the closest thing to a "quick and cheap" step in the patent world. It is never examined, it lasts 12 months and cannot be extended, and it allows you to use the term "patent pending". If you file a non-provisional application within those 12 months, you keep the earlier filing date for everything the provisional properly disclosed.[2]
What a blockchain timestamp gives you
A timestamp proves that a specific piece of content existed no later than a specific moment. Technically, a SHA-256 hash of your content is written into a Bitcoin transaction — in our case into an OP_RETURN output, a small data field that is part of the permanent blockchain.[23] Anyone who is later shown the original content can re-compute the hash and confirm that it matches the transaction. Nobody, including the service that created it, can back-date or alter the record.
What it does not do is just as important. It does not prove that you are the inventor. It does not examine whether your idea is new. It gives you no right to stop anyone from doing anything.
The first-to-file trap
Many people assume that if they can prove they had an invention first, they win. In the US that has not been true since 16 March 2013, when the first-inventor-to-file provisions of the America Invents Act took effect[3]; most other countries have always worked that way. If someone else independently invents the same thing and files before you, your earlier private timestamp does not give you the patent.
A private timestamp is also not prior art. Prior art is what was available to the public before the filing date. A hash on a blockchain discloses nothing, so it cannot be used to invalidate somebody else's patent for lack of novelty. If your goal is to make sure nobody can patent an idea, the effective routes are to file first or to publish the idea openly.
So when does a timestamp help an inventor?
- Before disclosure. If you describe your invention to a potential partner and they later claim it as theirs, dated evidence of what you had before the meeting supports a claim that they derived it from you — particularly together with an NDA and your emails.
- Lab-notebook discipline. Timestamping design documents at each milestone builds a record of independent development.
- Things that are not patentable. Business concepts, content formats, names and most "ideas" cannot be patented at all. For these, evidence of a date may be the only record you can create.
Side by side
| Patent (US example) | Blockchain timestamp (icalledit) | |
|---|---|---|
| Gives exclusive rights | Yes, if granted | No |
| Proves | Filing date and the content of the application | That the hashed content existed at the time of the transaction |
| Examined for novelty | Yes (non-provisional) | No |
| Official cost | $65–$325 provisional; $400–$2,000 non-provisional filing, search and examination[1]; attorney fees extra | $19 one-time |
| Time | Provisional: same day. Grant: years | Minutes to broadcast; confirmed with the next blocks |
| Content disclosed | To the patent office; non-provisional applications are normally published | No — only a hash goes on-chain |
| Covers | Inventions only | Any text or file |
Our recommendation
If you believe you have a patentable invention with commercial value, speak to a patent attorney early and ask about a provisional application — do not rely on a timestamp. Use timestamps for everything around it: early notes, versions, the material you show to others, and the many valuable things patents do not cover. A timestamp answers the evidence question, never the rights question.
Quick answers
Can a blockchain timestamp stop someone from patenting my idea?
Not on its own. Prior art has to be publicly available, and a private hash is not. To block a later patent you would need to file first or publish the idea.
Need dated evidence today?
One registration is $19, one-time. You get a Bitcoin transaction, a PDF certificate and a proof.json you can verify without us.
Timestamp your idea → See pricing← Back to the full comparison of all methods
Sources
Official and primary sources for the facts on this page. All accessed on 20 September 2026. Fees and processing times change — check the source before you rely on a number.
- USPTO Fee Schedule (provisional filing fee, 37 CFR 1.16(d): $325 / $130 small entity / $65 micro entity; utility basic filing + search + examination: $2,000 / $800 / $400) — https://www.uspto.gov/learning-and-resources/fees-and-payment/uspto-fee-schedule
- USPTO — Provisional Application for Patent (12-month pendency, not examined, "patent pending") — https://www.uspto.gov/patents/basics/apply/provisional-application
- USPTO MPEP § 2159 — first-inventor-to-file provisions took effect on 16 March 2013 — https://www.uspto.gov/web/offices/pac/mpep/s2159.html
- Bitcoin developer guide — null data (OP_RETURN) outputs are provably unspendable data carriers — https://developer.bitcoin.org/devguide/transactions.html