[{"type":"report","id":"BLC-STUDY-0953","title":"Multi-operator, per-token ERC-721 approvals.","author":[{"literal":"Cristian Espinoza"},{"literal":"Simon Fremaux"},{"literal":"David Huber"},{"literal":"Arran Schlosberg"}],"issued":{"date-parts":[[2023]]},"publisher":"Cristian Espinoza, Simon Fremaux, David Huber, and Arran Schlosberg","URL":"https://github.com/ethereum/ERCs/blob/master/ERCS/erc-6464.md","note":"Rights status: Licensed for redistribution. Not a licence to republish the paper."}]