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davidmckayv merged 1 commit into from
Nov 13, 2026
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Publish the key that signs OpenBot's images #1542

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4 changes: 4 additions & 0 deletions docs/cosign.pub
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEwjpB/sBbBjFs3HEPgNsyUtri06uu
fB1nrsjGTSFHYAAfPDPQD2q+zUWF58tzpwhvvwZRhjpcqoBrIUbQzOSk5g==
-----END PUBLIC KEY-----
14 changes: 14 additions & 0 deletions docs/deployment.md
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Expand Up @@ -20,6 +20,20 @@ docker run -p 3001:3001 --env-file .env \
their own. What a release publishes is digest-pinned in its `container-images.json`, and deploying
those digests rather than a moving tag is what [releasing.md](releasing.md) recommends.

## Checking an image's signature

OpenBot's images are signed with OpenBot's own key. The public half is [cosign.pub](cosign.pub), and
[cosign](https://docs.sigstore.dev/cosign/) checks an image against it before you deploy:

```sh
cosign verify --key docs/cosign.pub --insecure-ignore-tlog=true ghcr.io/copilotkit/openbot-server:main
```

The same command checks `ghcr.io/copilotkit/openbot`, `openbot-agent-computer` and
`openbot-supervisor`, at any tag published from now on; images from v1.0.2 and earlier carry no
signature. The signatures are not recorded in a public transparency log, which is what
`--insecure-ignore-tlog=true` tells cosign to expect. The key is what proves the image is OpenBot's.

## What is in the image, and what is not

**In it:** the built app, the API, and Chromium. One port, 3001. The browser listens on 4100 inside
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