📢 The OpenSea deadline for newly published contracts to include operator filtering has been extended to 2nd Jan 2023.
However, there is a new requirement that all contracts published from then onwards MUST include the ERC2981 royalty standard.
Please refer to the examples, updated for your convenience.
Gas optimized and flexible version of OpenSea's Mandatory Operator Filterer for royalties.
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Modifiers can be toggled on / off efficiently.
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Gas optimized. Saves 300+ gas on transfers.
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Keeps your clients and some marketplaces happy.
To install with Foundry:
forge install vectorized/closedseaTo install with Hardhat or Truffle:
npm install closedseasrc
├─ OperatorFilterer.sol — "Operator Filterer for regular and upgradeable contracts"
└─ example
├─ ExampleERC721A.sol — "ERC721A example"
├─ ExampleERC721.sol — "ERC721 example"
├─ ExampleERC1155.sol — "ERC1155 example"
└─ upgradeable
├─ ExampleERC721AUpgradeable.sol — "ERC721A upgradeable example"
├─ ExampleERC721Upgradeable.sol — "ERC721 upgradeable example"
└─ ExampleERC1155Upgradeable.sol — "ERC1155 upgradeable example"| Type | Contract |
|---|---|
| ERC721A | src/example/ExampleERC721A.sol |
| ERC721 | src/example/ExampleERC721.sol |
| ERC1155 | src/example/ExampleERC1155.sol |
| ERC721AUpgradeable | src/example/upgradeable/ExampleERC721AUpgradeable.sol |
| ERC721Upgradeable | src/example/upgradeable/ExampleERC721Upgradeable.sol |
| ERC1155Upgradeable | src/example/upgradeable/ExampleERC1155Upgradeable.sol |
function _registerForOperatorFiltering(
address subscriptionOrRegistrantToCopy,
bool subscribe
) internal virtualRegistration function that can be called in an initializer, anywhere.
Can be called repeatedly without issues.
To subscribe to the default OpenSea curated block list, simply use _registerForOperatorFiltering(), without arguments.
modifier onlyAllowedOperator(address from) virtualModifier to guard a function and revert if from is a blocked operator.
modifier onlyAllowedOperatorApproval(address operator) virtualModifier to guard a function from approving a blocked operator.
function _operatorFilteringEnabled() internal view virtual returns (bool)For deriving contracts to override, so that operator filtering can be turned on / off.
Returns true by default.
function _isPriorityOperator(address operator) internal view virtual returns (bool)For deriving contracts to override, so that preferred marketplaces can skip operator filtering, helping users save gas.
Returns false for all inputs by default.
We have verified with OpenSea engineers that ClosedSea is fully compatible with their royalties enforcement system, as of Nov 18th 2022.
Nevertheless, this codebase is provided on an "as is" and "as available" basis.
We do not give any warranties and will not be liable for any loss incurred through any use of this codebase.
This repository is inspired by and directly modified from: