토큰 발행 모듈

message Params {
  option (amino.name) = "client/x/mint/Params";

  // type of coin to mint
  string mint_denom = 1;
  // inflation amount per year
  string inflations_per_year = 2 [
    (cosmos_proto.scalar)  = "cosmos.Dec",
    (gogoproto.customtype) = "cosmossdk.io/math.LegacyDec",
    (gogoproto.nullable)   = false
  ];
  // expected blocks per year
  uint64 blocks_per_year = 3;
}