Replying to Avatar jimbocoin 🃏

Pasting private keys is cool and all, but at some point I’d like to see hierarchical-deterministic npubs. That way, I can have one super-safe offline seed that generates provably derived npriv/npub identities. If any identity is hacked, the root key can broadcast an invalidation and I can switch to using the next derived key.
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Blake 2y ago

Draft, but check out. https://github.com/nostr-protocol/nips/pull/158

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jimbocoin 🃏 2y ago

Looks good! I like that it’s deterministic by piggybacking off of BIP32 derivation. Seems to cover my use case. 👍

Out of scope for the NIP, but just thinking out loud: an aggregator of invalidation events could publish a bloom filter of invalidated npubs. There could be false positives, so clients would want to query for the specific invalidation message.

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Blake 2y ago

Yep. I think statistical filters will be important to ease per-client effort. However it means you’ll need to double check for positive results.

Event clients sharing a filter for what events they already have and a relay filtering them out or similar.

I wonder if a compound filters have event been used, where it’s still never 100%, but you have two offset filters and it would need to be true in both.