How To Mint With Token Extensions

In Token-2022, it is possible to close mints by initializing the MintCloseAuthority extension before initializing the mint.

Here’s the code to initialize a mint with mint close authority:

$ spl-token --program-id TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb create-token --enable-close Creating token C47NXhUTVEisCfX7s16KrxYyimnui7HpUXZecE2TmLdB under program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb

To close a mint:

Mint close extension lets authorized users permanently close mints with zero remaining supply, reclaiming lamports.

$ spl-token close-mint C47NXhUTVEisCfX7s16KrxYyimnui7HpUXZecE2TmLdB Signature: 5nidwS9fJGJGdmaQjcwvNGVtk2ba5Zyu9ZLubjUKSsaAyzLUYvB6LK5RfUA767veBr45x7R1WW9N7WkYZ3Rqsb5B