Proofbox
Proofbox: “Proofbox GmbH is an Austrian platform for defensive publications. Technical documents receive a qualified electronic seal with a qualified timestamp under eIDAS and a DOI, and are published in the Proofbox online archive, where their availability is logged.”
More information from this source
- codeSEAL® & Trade Secret - Proof of Existence
“Protect source code and trade secrets without disclosure. Proofbox creates tamper-proof, eIDAS-compliant proof of existence — no data leaves your environment.”