When an NFT is reported stolen, marketplaces often disable trading for it. The action affects the storefront and its order book, not the token, which continues to exist and move on chain.
The block lives off chain
A marketplace maintains its own database of listings, offers and metadata. Delisting an item removes it from that database and from any interface the marketplace controls.
The token contract is unchanged. Ownership, transfer rules and history remain exactly as they were, because the marketplace has no authority over the contract it merely indexes.
So a blocked item can still be transferred wallet to wallet, and can still be listed anywhere that does not consult the same database.
Why reports are treated cautiously
A theft report is an unverified claim from someone asserting they were the prior owner. Acting on it removes a market for an asset that a current holder may have bought innocently.
Marketplaces therefore ask for supporting material, commonly a police report filed in the claimant's jurisdiction and evidence linking the wallet to the claimant.
The standard is procedural rather than judicial. The marketplace is deciding what to display, not adjudicating title, and it says so in its terms.
Downstream buyers inherit the flag
Once an item is flagged, transferring it does not clear the flag. The token identifier stays on the list, so the next holder finds trading disabled as well.
That holder may have purchased on another venue without any indication of a dispute. The economic loss lands on whoever holds the item when the flag becomes binding.
Appeals exist, but they require the current holder to demonstrate the circumstances of acquisition, which is difficult when the chain shows only addresses and transfers.
Royalty enforcement uses the same machinery
Some collections restrict transfers to a list of approved operator contracts, enforced inside the token contract rather than by any marketplace.
That is a genuinely on-chain block: a transfer through a non-approved marketplace reverts. The restriction travels with the token to every venue.
The distinction matters when reading a collection. Storefront-level blocking is a policy choice by one company, while operator filtering is a rule written into the asset itself.
Why no marketplace can undo a transfer
Reversing a transfer would require the contract to include a function permitting it and an authorized party to call that function.
Most collections deliberately omit such a function, because its existence would mean the issuer could reassign any item at will, which undermines the ownership claim being sold.
Recovery in practice therefore runs through off-chain channels: negotiation with the current holder, exchange cooperation if the item is sold for funds, or legal process in a court.