Merge pull request #25 from ProjectOpenSea/0age-patch-1

Update sip-7 to add substandards 7-9

SIPS/sip-7.md

@@ -116,6 +116,9 @@ Initial substandards include:
 | 4 | required order hashes included as part of fulfillment | `(bytes32[])` | `{"requestedIncludedOrderHashes": null OR ["0xabc...", ...]}` | `{"requiredIncludedOrderHashes": ["0xabc...", ...]}` |
 | 5 | required order hashes NOT included as part of fulfillment | `(bytes32[])` | `{"requestedExcludedOrderHashes": null OR ["0xabc...", ...]}` | `{"requiredExcludedOrderHashes": ["0xabc...", ...]}` |
 | 6 | full amount of order's first offer item, and required hash of full ReceivedItem array at total fulfillment of order | `(uint256, bytes32)` | `{"requestedReceivedItems": null OR [{"itemType": "1", "token": "abc", ...}, ...]}` | `{"originalFirstOfferItemAmount": "123...", "requiredReceivedItems": [{"itemType": "1", ...}, ...], "requiredReceivedItemsHash": "0xabc..."}` |
+| 7 | required identifier for first returned received item, and trigger call to `beforeAuthorizedTransfer(address operator, address token)` and `afterAuthorizedTransfer(address token)` on the specified registry, supplying a specified operator and token from first 721 or 1155 item | `abi.encodePacked(uint256 identifer, address registry, address operator)` | `{"requestedIdentifier": "123...", "requestedRegistry": "0xabc...", "requestedOperator": "0xdef..."}` | `{"requiredIdentifier": "123...", "requiredRegistry": "0xabc...", "requiredOperator": "0xdef..."}` |
+| 8 | required identifier for first returned received item, and trigger call to `beforeAuthorizedTransfer(address token, uint256 tokenId)` and `afterAuthorizedTransfer(address token, uint256 tokenId)` on the specified registry, using token and tokenId from first 721 or 1155 item | `abi.encodePacked(uint256 identifer, address registry)` | `{"requestedIdentifier": "123...", "requestedRegistry": "0xabc..."}` | `{"requiredIdentifier": "123...", "requiredRegistry": "0xabc..."}` |
+| 9 | required identifier for first returned received item, and trigger call to `beforeAuthorizedTransferWithAmount(address token, uint256 tokenId, uint256 amount)` and `afterAuthorizedTransferWithAmount(address token, uint256 tokenId)` on the specified registry, using token, tokenId & amount from first 721 or 1155 item | `abi.encodePacked(uint256 identifer, address registry)` | `{"requestedIdentifier": "123...", "requestedRegistry": "0xabc..."}` | `{"requiredIdentifier": "123...", "requiredRegistry": "0xabc..."}` |
 
 Additional substandards MAY be specified in subsequent SIPs that inherit SIP-7.