The concept of sidechains was conceived as a way to extend the use of bitcoin to other chains providing trust-minimized functionality not available in Bitcoin. We already had a way to produce other trust-minimized functionalities—altcoins are almost as old as Bitcoin itself. But, for those believing that bitcoin should become the only currency in the world, creating any network with a different token was heresy.
The proponents of the original idea gave up on its feasibility soon after publishing the paper and moved on to create the Liquid federation (compromising on the trust-minimization aspect). But Paul Sztorc, who needed a sidechain for his Truthcoin project, claimed to have squared the circle. His Drivechain proposal supposedly creates a way to move bitcoin to sidechains and back without additional trust requirements. He envisioned Drivec