OpenSea completes smart contract upgrade, existing NFT sell orders will expire on 2/26

In response to the vulnerability where users were unable to determine if NFTs were still listed for sale after being transferred out and back in, NFT trading platform OpenSea announced that it has completed a smart contract upgrade to remove inactive NFT listings on the platform.

Bulk Smash

According to an announcement, due to a smart contract upgrade, all NFTs listed for sale on OpenSea before 3:00 AM on 2/19 will expire and become invalid on 2/26 at 3:00 AM Taiwan time.

This new upgrade will ensure that old, inactive NFT listings on the Ethereum blockchain will be invalidated, allowing OpenSea to further develop new security features in the future.

It was also reported last night that @z0age, the lead protocol developer at OpenSea, stated that this new smart contract is called Bulk Smash, and the new feature will simplify and secure the management of listing and bidding for NFTs.

Migration of NFTs

OpenSea will not charge gas fees for NFT migration.

1. Users need to migrate the NFTs listed for sale, but this upgrade is seamless. Users do not need to reset their wallets or NFTs. Simply go to the profile and click on "Migrate Listings" in the feature list.

2. Select the NFT projects held on the left side, and the migration list will display the NFTs listed for sale. Click "Confirm" to confirm the migration. The wallet will prompt for transaction signing, which also does not require gas fees.

3. Upon completion, a notification of successful migration should appear.

4. The migrated NFTs will now have a new expiration date for the listing.

If users are unable to complete the migration before 3:00 AM on 2/26, the listed NFTs will simply expire and become invalid. There will be no fees charged for relisting after the deadline.

Official tutorial video from OpenSea: