The sound itself is written on chain: the token stores the Opus bytes and serves them back forever. Fixed 1B supply on a bonding curve that graduates into a permanently locked Uniswap V4 pool.
The creator wallet receives the creator share of the curve fee plus any creator tax, claimable from the token page.
launch fee 0.0005 ETH + gas (fractions of a cent per tx) · 1% curve fee · your wallet signs every transaction · groove.fun never custodies assets