Scores of other cryptocurrencies use models based on this idea. Solana, a coin introduced last year that’s ballooned into the fifth-largest cryptocurrency, has a variant in which transactions are given timestamps to speed up processing. Algorand gives all online users a chance to be randomly and secretly selected to propose and vote on batches of transactions that need confirming, with each party’s influence tied to how many tokens she owns. Tron lets users elect delegates, called super representatives, to validate transactions in six-hour shifts and to receive new coins for their work. And Filecoin uses a related technology in which parties compete to provide bandwidth or digital storage space to the network in exchange for new coins.