Continuing the journey through layer-two technologies, here is a summary of the paper “eltoo: A Simple Layer2 Protocol for Bitcoin” by Christian Decker et al (see also: a summary in the Blockstream blog). Eltoo proposes a new construction for payment channels.[1] It is not a fully-fledged protocol, rather, it only describes one crucial building block – state revocation mechanism. As you might remember from my summary of “SoK: Off the chain transactions”, the crucial challenge in L2 ...
