nostr:nevent1qqs9nhj6y8y0cmze5eamvvj302z39497f97kvksgmgpv9r2pq2xteuqzyzrhxzp8d0jse6d6lfl9ud6wfl9lt6v9ngserre5hthaqqr5dd7n2qcyqqqqqpstlyuau

The guy who posted about it originally says just add your xmr address to become Zappable, so maybe it is like cake's twitter feature?