The leaks · 78 / 127 · 2 min
Approving a collection
An NFT approval can cover every token in the collection, including the ones you buy later.
The approval can outlive the sale, and it can cover tokens you buy later.
A worked case
A person approves a market to sell one picture. Months later another site, or a stolen key to that approval, moves the rest of the collection. The prompt had felt like a single listing. The allowance was the set.
The whole set
A marketplace asks for approval so it can move a token when it sells. The approval is often for the collection, not for one item.
Later
The approval sits there after the sale. A later signature, or a stolen session, can move the rest. Revoking is a separate step. The sale page will not do it for you.
OpenSea and the allowance
OpenSea became the default place people listed NFTs. Listing asks the token contract for an approval so the market can move the token when a sale matches. For many collections that approval is not one serial number. It is the collection.
The approval remains after you close the tab. A later buyer of your trust, or a later bug in a site you approved, is spending an allowance you forgot. Revoking it is a transaction of its own.
Read it yourself
These links are the record. They are not a recommendation, and they are not instructions. A news story or a court paper can still be wrong about a detail. The check does not change because a famous name is in the story.
Apply the check
Open a question. The line is about this topic. It is not a verdict that anything is safe.
Whoever holds that approval.
The market contract you approved.
The approval, until it is revoked.
Check yourself
Write it in your own words. The course's answer opens after that. Nothing is sent.
After this you can see whether the approval is one token or the whole collection.