[{"type":"report","id":"BLC-PDF-0007","title":"PPCoin: Peer-to-Peer Crypto-Currency with Proof-of-Stake","author":[{"literal":"King"},{"literal":"Nadal"}],"issued":{"date-parts":[[2012]]},"publisher":"The authors","URL":"https://www.peercoin.net/assets/paper/peercoin-paper.pdf","note":"Rights status: Rights uncertain. Not a licence to republish the paper."}]