LNBig offers channel opening services for a very reasonable fee. They provide an LNURL link to open the channel. Which app if any within Umbrel supports this standard?
ThunderHub has a LNURL button on the Home page, I believe you should be able to use that. However, you should keep in mind that LNBig only opens a channel temporarily, they will close it after 1 month unless there is continuous activity.
Another option that I have used for inbound liquidity is BitFinex. You can open a channel to the exchange and send satoshis to your trading account. You can then do a straight swap from Lighting BTC to BTC and withdraw that to your wallet. This way you get a lightning channel with a remote balance and the only cost is opening the channel and then the withdrawal fee from BitFinex (0.0004 BTC).
Also note that BitFinex have a minimum 4,000,000 satoshi for opening a channel directly with them, but if you need a smaller amount you can find a connecting channel which allows smaller amounts.
ThunderHub’s LNURL seems to only work for payments, not channel openings yet. Seems like it’s still in the works. It’s a fairly new standard.
The Bitfinex idea is great!
If you do want to continue with LNBig. Connecting your node to Zap app works for channel LNURL’s.
if you’re going to open a channel with Bitfinex and already have outgoing liquidity, better to wait. Demands to deposit toward Bitfinex is high, so at least profit from it ^^
Haha … true … although has anyone really made any serious money with lightning channels?
OK, my recipe for maximum success:
- Open a channel to BitFinex
- Send half to the exchange via lightning
- Swap lightning BTC -> BTC
- Transfer BTC to BlockFi for 5% interest