Lightning implementations exist and are fairly usable (although I've found there is some disagreement on e.g. public key format for peers). Check out the follow

Lightning implementations exist and are fairly usable (although I've found there is some disagreement on e.g. public key format for peers). Check out the following: * Lit: https://github.com/mit-dci/lit https://github.com/mit-dci/lit * Eclair: https://play.google.com/store/apps/details?id=fr.acinq.eclair.wallet https://play.google.com/store/apps/details?id=fr.acinq.eclai... * lnd: https://github.com/lightningnetwork/lnd https://github.com/lightningnetwork/lnd * lightning-c: https://github.com/ElementsProject/lightning https://github.com/ElementsProject/lightning Do these projects have the nicest UX? No. Is it fairly trivial to hook up a shiny UI to their RPC interfaces? Yes. It's going to take a bit to roll out the infrastructure necessary, but a 1.7 MB block size is good enough until then. Especially if miners stop using ASICBOOST and mining near-empty blocks.