[{"type":"report","id":"BLC-STUDY-0419","title":"EIP-721 Metadata Update Extension","author":[{"literal":"Anders"},{"literal":"Lance"},{"literal":"Shrug"},{"literal":"Nathan"}],"issued":{"date-parts":[[2022]]},"publisher":"Anders , Lance , Shrug , Nathan","URL":"https://eips.ethereum.org/EIPS/eip-4906","note":"Rights status: Official external source only. Not a licence to republish the paper."}]