[{"type":"report","id":"BLC-STUDY-0967","title":"ERC-721 Holding Time Tracking","author":[{"literal":"Saitama"},{"literal":"Combo"},{"literal":"Luigi"}],"issued":{"date-parts":[[2023]]},"publisher":"Saitama, Combo, Luigi","URL":"https://github.com/ethereum/ERCs/blob/master/ERCS/erc-6806.md","note":"Rights status: Licensed for redistribution. Not a licence to republish the paper."}]