# BlockList

All TL Creator Contracts implement BlockList modifiers to approval functions. These modifiers are never implemented on any transfer functions. 

**ERC721TL** - `notBlocked` implemented on `approve` and `setApprovalForAll`

**ERC1155TL** - `notBlocked` implemented on `setApprvoalForAll`

Read more on BlockList:

{% content-ref url="../../blocklist/blocklist-overview" %}
[blocklist-overview](https://docs.transientlabs.xyz/blocklist/blocklist-overview)
{% endcontent-ref %}