great! the only thing that I feel should be added is explaining how tokens can be locked to a pubkey ensuring that it can only be spent with the corresponding private key.
The ecash section of the nostr:npub13s5mxgws70rpxsug96jfvglggackjrxs2ehypwg0prjaxsek42sqd9l03e guide is live! Thanks to all the #Cashu and #Fedimint devs who helped out. I got to think through some of the unique nuances of ecash and suggest some design best practices. Check it out and let me know your thoughts: https://bitcoin.design/guide/how-it-works/ecash/introduction/
Discussion
There is a P2PK section in the design best practices, but it doesn’t explicitly mention that need for a private key to unlock P2PK ecash. I thought that was implied, but if adding that bit of info helps make the explanation easier then I’ll update it. Thanks for the find! 
