BLS signature aggregation was finalized as an IETF standard in 2019. It's the reason Ethereum can support over a million staking nodes.
BLS was invented back in 2001, but was expensive to verify. A paper published in 2018 showed how to verify n aggregated signatures on the same message m with just 2 pairings instead of n+1.
BLS was invented back in 2001, but was expensive to verify. A paper published in 2018 showed how to verify n aggregated signatures on the same message m with just 2 pairings instead of n+1.
https://ethresear.ch/t/pragmatic-signature-aggregation-with-...