Does this mean for example that if I have BTC on Coinbase I can send it to any bitcoin address for under 1 cent now? Or what exactly do I have to do.
no you cant pay any bitcoiner.. you can only pay other users of LN, paying their LN channel.
LN is not the bitcoin network, dont be fooled into thinking it is
much like other networks that peg/wrap/bridge.. they are not actually bitcoins they are IOU..
remember bitcoin never leaves the bitcoin network. so all other networks making bitcoin claims are not the same thing as the actual bitcoin network
also when you have BALANCE on coinbase its not "your bitcoin" you just has a coinbase BALANCE which suggests they owe you bitcoin which your suppose to withdraw.. (previously and preferably to the bitcoin network so you can actually own your bitcoin)
however
now with LN attached to coinbase, they assume that their BALANCE then moves to another network where THEY HAVE THE KEYS* and give you another form of unsettled IOU amount which again is NOT bitcoin settled to your key..
by staying in LN using their channel renting and balance giving. they hold onto the coin and your playing with IOU credit. which they hope and know due to the liquidity issues people only play with small amounts and know the bitcoin fee to confirm funds out to your bitcoin address is higher, means you are less likely to ever want to actually settle to the bitcoin network thus they keep the actual bitcoin and just wait for you to spend your balance to zero so they can then close out the channel when you get to zero so they never have to pay out
*read the hints in the article about who actually holds the bitcoin
with Coinbase holding the signing keys entirely while Lightspark operates its node.
#not-your-key-not-your-coin