ERC-6059 Parent-Governed Nestable Non-Fungible Tokens

FinalERCcreated 2022-11-151 later proposal build on itrequires ERC-165, ERC-721

An interface for Nestable Non-Fungible Tokens with emphasis on parent token's control over the relationship.

Authors: Bruno Škvorc (@Swader), Cicada (@CicadaNCR), Steven Pineda (@steven2308), Stevan Bogosavljevic (@stevyhacker), Jan Turk (@ThunderDeliverer)

ERC-165 interface ids

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

IERC6059 0xf71e99d2

The spec asserts 0x42b0e56f for IERC6059, which its own interface does not produce.

Asserted value requires addChild(uint256,uint256,bytes) and nestTransferFrom(...,bytes); the published body declares neither.

`0xe97ceaa8`	`acceptChild(uint256,uint256,address,uint256)`
`0x35440faf`	`addChild(uint256,uint256)`
`0xb390c0ab`	`burn(uint256,uint256)`
`0x2f32f937`	`childOf(uint256,uint256)`	view
`0x6f19951c`	`childrenOf(uint256)`	view
`0xfb25fb7a`	`directOwnerOf(uint256)`	view
`0xe5f2e9e4`	`nestTransferFrom(address,address,uint256,uint256)`
`0x6352211e`	`ownerOf(uint256)`	view
`0xa898e364`	`pendingChildOf(uint256,uint256)`	view
`0x44ec9344`	`pendingChildrenOf(uint256)`	view
`0x97961336`	`rejectAllChildren(uint256,uint256)`
`0xdefa80c3`	`transferChild(uint256,address,uint256,uint256,address,uint256,bool,bytes)`

0x01ffc9a7 supportsInterface(bytes4) ERC-165

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

`0x04444026cefd1b05506559cab59d1b865ae3ba4ed2fe5c894f04e522776c552d`	`NestTransfer(address,address,uint256,uint256,uint256)`
`0xe65085e689b77b126ba0bac3b079aa8288f19f4d5445af11c76003f8ab3075dd`	`ChildProposed(uint256,uint256,address,uint256)`
`0x29486b9e2ae569b440933a9b1b421467306fa21f3dcad439c262910a634963a9`	`ChildAccepted(uint256,uint256,address,uint256)`
`0x8ac4a0d65950c3e40448afb2260e2e0ec36ea15644d9b39e37e85472e5f94451`	`AllChildrenRejected(uint256)`
`0x2bedee38cdb22411c14554191243c0e117c0088ddae3459876acd46a0fd53815`	`ChildTransferred(uint256,uint256,address,uint256,bool)`

Proposals this one names in its requires field.

Later proposals that name this one in their requires field.