[draft] waiting for >1 confirmations

[xloem]

It looks like this will need more API interface additions in order to properly discern the transaction depth. When doing that, it would make sense to get the block difficulty too, to verify the chain could be the real one. Might leave this PR on hold waiting for the P2P one. Not sure. But it's somewhere anybody could start.

[monkeylord]

Or maybe we should store history uploads, so we can have "check and fix" for missing record.