Upload the receipt you were given when you submitted an idea. Everything is
recomputed here, in your browser, from the receipt alone — nothing is sent anywhere,
and no answer comes from the portal that issued it. That is the point: a receipt you
can only check by asking the operator whether it is valid is not evidence of anything.
Check a receipt
Download a receipt from My ideas or an idea’s page, then upload the .json file, drop it onto the box below, or paste its contents.
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Checking
Recomputing hashes from the receipt.
What was submitted
The five links
One last step: confirm the published checkpoint
Step 5 only proves the receipt agrees with itself. The checkpoint below was published
outside the operator's control. For independent confirmation, open it, read the 64 characters it contains,
and compare them to the checkpoint in step 5. If they match, the entry existed before that
publication — and no later rewrite of the database can change that.
What a match proves
The text is unaltered. One changed character anywhere produces a different hash, and step 1 fails.
The author held the key. The signature can only be produced by the private key, which never left their device.
It existed by then. The entry is inside a Merkle root published at a known time; nothing recorded later can be inserted before it.
Nothing was removed. Each entry names its predecessor's hash, so a deletion breaks the chain visibly.
What it does not prove
Not that they thought of it first. It proves when it reached this ledger — someone elsewhere may have had it earlier.
Not legal ownership. Copyright and patents have their own rules; timestamped evidence supports a claim, it does not create one.
Not identity. It binds an idea to a key. Tying the key to a person is a separate question the portal answers, not the maths.
Not secrecy. A public idea is public. Use a sealed submission if you need the timestamp without the disclosure.