Money loses the characteristic of fungibility if its owner is identified: marked money.
Money should be anonymous.
That's why #Monero
Discussion
Hey, I just sent you a tip of 5 Nostracoin.
Nostracoin can be used to record your nostr events in the blockchain.
You might want to do that because
1. It is censorship resistant
2. Timestamps your note
3. Never drops your note
You can check your balance or view Nostr at https://nostraco.in