Sats are denominations of bitcoin. It is in fact bitcoin. Fractional.

Yea sats are bitcoin absolutely. Nostr bitcoins it is!

100 million satoshis (sats) is 1 bitcoin.

Most Nostr clients harness lightning technology which makes sending micro payments seamless.

This technology is layer 2 of the Bitcoin network.

Not to overload you but that’s the zoom out overview.