[{"type":"report","id":"BLC-STUDY-0422","title":"Vendor Metadata Extension for NFTs","author":[{"literal":"Ignacio Mazzara"}],"issued":{"date-parts":[[2022]]},"publisher":"Ignacio Mazzara","URL":"https://eips.ethereum.org/EIPS/eip-4955","note":"Rights status: Official external source only. Not a licence to republish the paper."}]