The Greening of Blockchains

  • PieceWork is a tweak to standard cryptocurrency PoWs that enables recycling of mining effort.

  • Resource-Efficient Mining (REM) repurposes innately useful workloads for mining effort. It relies on use of a trusted hardware technology called Intel SGX.

  • Snow White is the Proof-of-Stake system with rigorous security guarantees.

Interesting quote from that article:

Estimates vary, but it is likely that the Bitcoin network consumes roughly as much electricity as a nuclear reactor, about 1/3 of the entire electricity consumption of the entire country of Ireland.