Building a Verified Web with Certisfy Cryptographic Signatures

Trusted URLs via Cryptographic Signatures

Building a Verified Web with Certisfy Cryptographic Signatures

I propose using Certisfy stickers to attach cryptographic signatures to URLs, creating a strong signal of authenticity in an AI-saturated online space. This approach moves beyond flawed secrecy models to prevent data breaches and scams by verifying contact sources in real time. By leveraging existing trust infrastructure like .gov emails, we can bootstrap a robust web of trust where users instantly validate the identity behind every link and message.

Secrecy has its use as a privacy preserving mechanism but is fairly flawed as an information usage authentication mechanism.
  1. Edmond

    SDK:

    https://github.com/CipherTrustee/certisfy-js

    Web of trust use case example:

    https://bsky.app/profile/bitlooter.bsky.social

    Experimenting with Keybase key holders as CAs:

    https://www.reddit.com/r/Keybase/comments/1q5ys71/using_keyb...

    Cryptographic Implementation of Exclusivity Agreements:

    https://github.com/CipherTrustee/certisfy-claim-recipes/tree...

    Build Your Own Trust Chain:

    https://blog.certisfy.com/2026/04/build-your-own-trust-chain...

    Some other examples of how you could leverage it:

    https://blog.certisfy.com/

    Happy to answer questions.

  2. tgma

    Google AMP had the concept of Signed Exchanges so that you can host content on a third party server while proving its integrity https://developer.chrome.com/blog/signed-exchanges

    Unfortunately, AMP itself was controversial and the system was not really adopted elsewhere, but it is something.

  3. Retr0id

    What happens if the destination/contents of the URL changes after I sign it?

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2026-07-30