[{"type":"report","id":"BLC-STUDY-0871","title":"Contract with Exactly One Non-fungible Token","author":[{"literal":"Víctor Muñoz"},{"literal":"Josep Lluis de la Rosa"},{"literal":"Andres El-Fakdi"}],"issued":{"date-parts":[[2022]]},"publisher":"Víctor Muñoz, Josep Lluis de la Rosa, Andres El-Fakdi","URL":"https://github.com/ethereum/ERCs/blob/master/ERCS/erc-4944.md","note":"Rights status: Licensed for redistribution. Not a licence to republish the paper."}]