AuthSig by Brayden Langley

Sign and verify web content with cryptographic signatures. Prove authenticity with blockchain. Combat misinformation.

About this extension

Sign and verify web content with cryptographic signatures. Prove authenticity with blockchain. Combat misinformation.

You can’t tell if content is AI anymore — but you can see who’s willing to stand behind it.

AuthSig lets creators sign what they publish and readers verify who authored it and when.
Once signed, content can’t be secretly changed or disowned.
The proof is public, tamper-resistant, and verifiable — all directly in your browser.

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Permissions and data

Required permissions:

Access your data for all websites

Optional permissions:

Access your data for overlay-us-1.bsvb.tech
Access your data for overlay-eu-1.bsvb.tech
Access your data for overlay-ap-1.bsvb.tech
Access your data for users.bapp.dev
Access your data for testnet-users.bapp.dev
Access your data for backend.2b63ed8575c49054dd0ac65c61e7e6c6.projects.babbage.systems
Access your data for localhost:8080

Data collection:

The developer says this extension doesn't require data collection.