Built so you don't have to trust us.
A seal is only worth the guarantees behind it. Thappa's come from public infrastructure — not from our word.
Immutable by design
Seals are minted by the SealD registry — a small, non-upgradeable contract on Polygon. Once a seal exists, its owner, hash, type, and timestamp can never be changed or removed, by anyone, including us.
Privacy — publish a hash, not your work
For private seals, only the keccak256 hash goes on-chain. The hash reveals nothing about the content, so you can prove authorship of an unpublished paper or idea while keeping it secret. When verifying a file, it's hashed locally in your browser — the file never leaves your device.
Permanence
Stored content is pinned to IPFS and addressed by its own content hash, so the record always points at the exact artifact. The on-chain seal anchors that reference permanently.
Your wallet
Each account gets a wallet whose key is encrypted at rest. Seals are owned by your address; you can verify or export them anywhere. Self-custody options are on the roadmap.
What a seal is — and isn't
A Thappa seal is cryptographic proof of existence, ownership, and time. It is strong, independent evidence — but it is not a registered patent, trademark, or copyright, and it is not legal advice. For formal IP rights, use a seal alongside the appropriate filing.
Security questions or disclosures? Write to hello@aiteleresearch.com.