lit

Sure. - Onion Routing Protocol: https://github.com/lightningnetwork/lightning-rfc/blob/maste... - P2P Node and Channel Discovery https://github.com/lightningnetwork/lightning-rfc/blob/maste... This repo contains specs for a lot of parts of the LN, although probably there may be changes I imagine. As for code, one of the implementations, LND (Go): https://github.com/lightningnetwork/lnd/tree/master/routing but there are at least 3 other implementations in the works. https://github.com/ElementsProject/lightning (clang) https://github.com/ACINQ/eclair (Scala) https://github.com/mit-dci/lit (Go)

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 * Eclair: https://play.google.com/store/apps/details?id=fr.acinq.eclai... * lnd: https://github.com/lightningnetwork/lnd * lightning-c: 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.