Optionally plug in to the Electr HTTP API rather than Electrum

[mhluongo]

https://github.com/Blockstream/electrs appears to be a big stability improvement, and exposes an HTTP API.

Users could choose between Blockstream and services run by Summa, CCG, or Thesis.

[Shadowfiend]

Users could choose

That sounds incredibly annoying to implement and to interact with tbh. We should probably clarify why we would expect users to use one over others, so we can guide them or make a smart initial choice… Or consider simply making this a decision made at compile time, and whatever group presents their own version of the dApp at their own domain name.

[mhluongo]

Oh we should make an initial choice for sure. This is a similar idea to choosing a node in MetaMask- most people won't, but it's important for resilience of the dApp, otherwise people are just relying on centralized infrastructure