I agree, this is their [tweet](https://twitter.com/COLDCARDwallet/status/1608886079159160834) about it.

You could go into ColdCard and derive a child key with BIP-85, once you do that you can enter the following in your browser console offline to generate the Nostr hex private key form that child seed:

```

[...new Uint8Array(await crypto.subtle.digest('SHA-256', new TextEncoder().encode('disorder dish either velvet insect session rigid rough work path bean release')))].map((b) => b.toString(16).padStart(2, '0')).join('')

```