Bitcoin

In July 2017, mining pools and companies representing roughly 80 percent to 90 percent of bitcoin computing power voted to incorporate a technology known as a segregated witness, or Segwit3 This fix makes the amount of data that needs to be verified in each block smaller by removing signature data from the block of data that needs to be processed in each transaction and having it attached in an extended block. Signature data has been estimated to account for up to 65 percent of data processed in each block, so this is not an insignificant technological shift.