Cosmos Dev Series: Cosmos-SDK-based Blockchain Upgrade

upgrade.proto

// SoftwareUpgradeProposal is a gov Content type for initiating a software
// upgrade.
message SoftwareUpgradeProposal {
  string title       = 1;
  string description = 2;
  Plan   plan        = 3 [(gogoproto.nullable) = false];
}

// Plan specifies information about a planned upgrade and when it should occur.
message Plan {
  string name = 1;
  ...
  int64 height = 3;
  string info = 4;
}