5 npubs in the bitcoin blockchain so far, giving:

- proof of publication (how old is your account)

- sybil resistance (how expensive is your account)

https://blockchair.com/search?q=npub

Reply to this note

Please Login to reply.

Discussion

Is there a spec/guide for this? What do the nostr devs and DID ppl think of this?

Not yet, but I think we will make one soon

Short answer: take your npub and put it in an OP_RETURN

#[3]

Is one way to do this. We can then prove age of account in directories such as nostr.directory

Got it. So simply include npub in OP_RETURN, then send note referencing txid?

Yes. Though it's searchable already