I like this, hiding in plain sight:
Only just realized that there is a 21 hidden in the nostr:npub167n5w6cj2wseqtmk26zllc7n28uv9c4vw28k2kht206vnghe5a7stgzu3r logo.
Who can find it too?

I like this, hiding in plain sight:
I'm telling them! The ones who don't see itβ¦ π
10101 binary converts to 21 decimal.