Raydium AMM v4

Raydium AMM v4 (675k…1Mp8) is a swap program on Solana. It is upgradeable: FytD…eZQK can replace its code.

Program address
675kPX9MHTjS2zt1qfr1NYHuzeLXfQM9H24wFSUt1Mp8
Category
swap program
Loader
BPFLoaderUpgradeab1e11111111111111111111111
Upgrade authority
FytDrVzDybM1TwFQPGb8qaxZR7dBCzNeqT3vtQsceZQK
Last deployed at slot
445763204

Explainer: upgradeable and immutable programs.