We watch if they are to do with a channel, or have outputs going to us, but otherwise we didn't, so we never updated the blockheight in the db. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Changelog-Fixed: JSON-RPC: `listtransactions` now correctly updates `blockheight` for txs created by `sendpsbt` which have no change outputs.