Prove Your Idea Came First, Without a Patent

In short

A trusted timestamp proves a document existed at a time, without revealing it: you publish its fingerprint (hash), not the document.
A dated research notebook shows how you got there, step by step, which is harder to fake than a single file.
Defensive publication makes your invention public prior art, so nobody else can patent it.
Publishing can affect your own patent rights in many countries; decide with a patent attorney first.

Why proof of when matters

Disputes about ideas are disputes about dates: who had it first, and can they show it? Emails and file dates are easy to question. What holds up is a record that couldn't have been made later: a fingerprint of your work placed somewhere nobody, including you, can backdate.

Timestamping without revealing anything

A hash is a short fingerprint of a file; change one byte and it changes completely, and it can't be turned back into the file. Publishing the hash on a public blockchain is a trusted timestamp: anyone can later check that your exact file existed by then, while the file itself stayed private.

Keep a notebook, not a single file

A single timestamped document proves a moment. A sequence of them proves a process: each step dated, each linked to the one before. Pramaan's invention notebooks record your work that way, entry by entry, sealed on your own computer, with each entry's fingerprint anchored on the chain. They work for AI-assisted research too, recording what you asked, what came back, and what you did with it.

Defensive publication and prior art

If you'd rather nobody patent an idea, including you, you can publish it as prior art: a dated, public disclosure that makes it unpatentable as new. That's defensive publication, a cheap alternative to a patent when what you need is freedom to use your own idea. Pramaan's Studio plan and above can publish a notebook as checkable prior art. Many countries have no grace period for your own disclosures, so if you might want a patent later, talk to a patent attorney before publishing.

Questions

How can I prove I had an idea first?

Record it in a way nobody can backdate: publish a fingerprint (hash) of your dated notes on a public blockchain. Anyone can later check your exact notes existed by then, without you revealing them until you choose to.

What is defensive publication?

Publishing an invention on purpose so it becomes prior art and nobody can patent it, while you stay free to use it.

Is a blockchain timestamp legal proof?

It's evidence you can present, not a court's finding. Its strength is that anyone can verify it independently and nobody can alter it later.

See it working: follow the pictures, browse Pramaan Marketplace, or start free.

Prove your idea came first, without a patent.