GameObject.Network Accessor — IsProxy, IsOwner, TakeOwnership, DropOwnership, Refresh, and IGameObjectNetworkEvents

go.Network.Active       // bool — is this object networked?
go.Network.IsOwner      // bool — does the local client own this?
go.Network.IsProxy      // bool — is this controlled by someone else?
go.Network.IsCreator    // bool — did the local client create this?
go.Network.Owner        // Connection — the owning connection (may be null)
go.Network.OwnerId      // Guid — owner's connection ID
go.Network.CreatorId    // Guid — creator's connection ID
go.Network.Flags        // NetworkFlags — transform sync behavior
go.Network.AlwaysTransmit // bool — always send updates regardless of visibility
go.Network.Interpolation  // bool — whether transform is interpolated

// Spawn with local client as owner
go.NetworkSpawn();

// Spawn with a specific owner
go.NetworkSpawn( someConnection );

// Spawn with full options
go.NetworkSpawn( new NetworkSpawnOptions { Owner = someConnection, OrphanedMode = NetworkOrphaned.Host } );

// Take ownership (respects OwnerTransfer setting)
go.Network.TakeOwnership();

// Assign to another connection
go.Network.AssignOwnership( someConnection );

// Drop ownership (object becomes host-controlled)
go.Network.DropOwnership();

go.Network.Refresh();                    // Refresh entire object
go.Network.Refresh( childGameObject );   // Refresh a specific descendant
go.Network.Refresh( someComponent );     // Refresh a specific component

public class MyComponent : Component, IGameObjectNetworkEvents
{
    public void NetworkOwnerChanged( Connection newOwner, Connection previousOwner ) { }
    public void StartControl() { }   // We are no longer a proxy
    public void StopControl() { }    // We became a proxy
}