They swapped the PDF. The fingerprint didn’t.

Teams put promises on a website they can edit. You lock the real file on your computer and post only a tiny fingerprint. Anyone can check. A site can lie. The match cannot.

Not a token list No wallet ~2 minutes Live proof on Devnet

They swapped the PDF. Catch it.

The whole idea

Tap a card to replay it on the stage.

The game is a demo in this tab. Studio is practice — nothing is posted. The stamp below is the official proof on Solana’s test network. This site is not a token list.

Official stamp on Devnet

This is not a screenshot

We locked a file and posted only its fingerprint. Then we took that stamp back. A later replace used a different file pair — not the same file put back. Those are public Devnet transactions. This page asks Devnet if the program is still there.

Program: 6cN9gD8L…TNvnR
Fingerprint we posted: 2379d8e3…2928a0 · taken back

Open the stamp on Explorer All four transactions Program account

Test network. Not audited. A liar can still lock a lie. File A was taken back. A later hosted demo file is what Check can open — not File A. Check the hosted demo

Where to go next

Make Studio practice. Stays on this computer. Not posted. Check Drop an official file, or run the hosted demo in one click. Proof Live Devnet. Four public transactions you can open. Learn Why, how it works, what we don’t promise.

What this is not

Not a token list
Not a way to pick a “safe” coin
Not putting your secrets on the internet
Not a new token
Not finished. Not reviewed by auditors.

Help us finish the public version

This pays for a careful release people can check themselves. Optional. Not a share of the company. Not a coin.

Optional support 0% of 25 SOL

Send SOL Live balance · receive only