
What Are PTLCs
If the Lightning Network is so useful today, it is in great part thanks to the fact that payments can be routed inside the network: if Alice wants to pay Bob, it isn’t necessary that she has a direct channel with him. Instead, she can have a channel with Carol and, if Carol has a channel with Bob, use Carol’s channel to reach Bob. With this mechanism arises a new question: how can such payments, that rely on the benevolence of third parties such as Carol, be achieved in a trustless way?...