Silvio Micali's Algorand via Coindesk

Algorand is a variation of proof-of-stake that uses cryptography to
randomly select the players involved in adding the next block (or set of
transactions) to the blockchain.

http://www.coindesk.com/scalable-blockchain-consensus-turing-award-winner-thinks-hes-got-solution/

For reference, this came up in @Southside 's response to the following post where I mention sortition as a novel and ancient solution to concensus / governance:

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