rpc over tor hidden service for bitcoind

[nickfarrow]

SatSale can now connect to your bitcoin node via a tor hidden service.

Currently this requires

1. Adding a hidden service on your node in /etc/tor/torrc
2. Adding the hostname onion to config.py like tor_bitcoinrpc_host = "http://u7...bid.onion"
3. Running tor on your SatSale machine, with torrc (thanks @x_y:matrix.org):

SocksPort 127.0.0.1:9050 IsolateClientProtocol IsolateDestPort IsolateDestAddr ExtendedErrors IPv6Traffic PreferIPv6 KeepAliveIsolateSOCKSAuth
SocksPolicy accept 127.0.0.1
SocksPolicy reject *

Works as an alternative to ssh_tunnel, and probably has some small server side privacy benefits?

Will be looking at building the same for lightning network gRPC this week.

[nickfarrow]

Relevant issue: #10

[nickfarrow]

Just going to merge this and find a solution for lnd later
https://twitter.com/coinjoiner/status/1424328752159367176