Base Cobalt Upgrade Enables Seizure of Token Balances Without Burning

Base's mainnet Cobalt upgrade introduces the 'seizeWithMemo' function, allowing token issuers to move a holder's balance to another address instead of burning it. This replaces the 'burnBlocked' tool from the previous Beryl upgrade. Additionally, issuers can now combine multiple allowlists or blocklists using logic gates, and the update introduces 'Validity Transactions' to allow traders to set specific conditions for transactions.