verification tool
Verify any document.
Check whether a document exists on-chain from its SHA-256 hash. The hash is computed in your browser — the file never leaves your device.
The tool needs an active plan
Pasting arbitrary hashes, uploading files and batch verification each cost a real read against the chain. Your plan covers them.
Did you receive a certificate? You do not need any of this: scan its QR code, or open the link printed on the PDF. That check is free and needs no account.
Ask your AI;
Ask your AI if Komma Stamps™ fits you;
Your assistant reads a briefing written for it and answers with your context, not ours.