5. Prepare and publicize the contract upgrade announcement. The announcement content includes Reason for upgrade / Upgraded code link / Audit report link / New and old contract address / Trigger time / Effective time
Announcement
6. Multiple sign wallets send transactions, trigger the addition of new contracts, and remove the old contracts.
Transaction link
7. After the delayed effective period(4 days) expires, any wallet sends a transaction, triggers the new contract to take effect, and removes the old contract. Update completed.