ERC-6150 Hierarchical NFTs

FinalERCcreated 2022-12-151 later proposal build on itrequires ERC-165, ERC-721

Hierarchical NFTs, an extension to EIP-721.

Authors: Keegan Lee (@keeganlee), msfew, Kartin, qizhou (@qizhou)

ERC-165 interface ids

Computed here as the XOR of the selectors each interface defines.

IERC6150 0x897e2c73

`0x095ea7b3`	`approve(address,uint256)`	ERC-721
`0x70a08231`	`balanceOf(address)`	ERC-721
`0x081812fc`	`getApproved(uint256)`	ERC-721
`0xe985e9c5`	`isApprovedForAll(address,address)`	ERC-721
`0x6352211e`	`ownerOf(uint256)`	ERC-721
`0xb88d4fde`	`safeTransferFrom(address,address,uint256,bytes)`	ERC-721
`0x42842e0e`	`safeTransferFrom(address,address,uint256)`	ERC-721
`0xa22cb465`	`setApprovalForAll(address,bool)`	ERC-721
`0x01ffc9a7`	`supportsInterface(bytes4)`	ERC-165
`0x23b872dd`	`transferFrom(address,address,uint256)`	ERC-721

Interfaces the spec defines alongside the core one, which an implementation may or may not carry.

`0x95efff06`	`childrenCountOf(uint256)`
`0x401b582b`	`childOfParentByIndex(uint256,uint256)`
`0x6fa0bd03`	`indexInChildrenEnumeration(uint256,uint256)`

`0xdbf51325`	`safeBurn(uint256)`
`0x9135b963`	`safeBatchBurn(uint256[])`

`0x6fa02141`	`transferParent(uint256,uint256)`
`0x95f76949`	`batchTransferParent(uint256,uint256[])`

`0xbdbae191`	`isAdminOf(uint256,address)`
`0x5f57bbed`	`canMintChildren(uint256,address)`
`0xffe9aacf`	`canBurnTokenByAccount(uint256,address)`

Topic0 is the keccak256 hash of the signature, which is what a log filter matches on.

`0x03f17d66ad3bf18e9412eb06582908831508cdb9b8da9cddb1431f645a5b8632`	`Minted(address,address,uint256,uint256)`
`0xcad8ef6f9df0bfc8a492e5b663b015f039dfa3ba0a76345421197b8f2f43b561`	`ParentTransferred(uint256,uint256,uint256)`

Proposals this one names in its requires field.

Later proposals that name this one in their requires field.