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No. Signing never needs an account or any software from us. Only creating a request does.

No. The signer signs a text message, not a transaction: nothing is sent on-chain and no gas is paid. We never ask for a seed phrase or a private key. A page that does is not us.

Any wallet that can sign a message on a supported chain. Signatures can be pasted from any wallet, hardware device or command-line tool; EVM browser wallets can also connect directly, and TRON can be signed with a Ledger over USB.

That the holder of the private key for an address signed this exact message, and, if anchored, that the certificate existed by the anchor time. It does not prove the identity of the signer.

Every certificate has a verification page, linked by the QR code on the PDF. To check without trusting us, use the open-source verifier with the JSON proof packet.

Yes, if they enter an email address on the signing page. We send the PDF and the proof packet once and do not store the address.

The address, the signed message, the signature, the time, and the reference the requester chose. Nothing else: no account, no profile. The data is kept as the requester's record and removed on request.

No. The only cookie is the one that keeps a requester signed in; opening a signing link sets none. Page-view analytics are first-party and cookieless, with IP addresses masked before storage.

Unanchored verifications are free and unlimited. You pay only for anchored proofs: Free includes 3 a month, Pro 50 and Business 350.

No. An anchored proof is on-chain and permanent. Downgrading only changes how many new anchored proofs you can create each month.