The whole point of Lightning Network is that most of the transactions happen off-chain. You only need an on-chain transaction to get your coins into the Lightning Network in the first place or at the time you want to close the channel and use them on the main network again.
https://cointelegraph.com/explained/lightning-network-explained
This is very much a means of scaling the network without increasing the block size as only a few on-chain transactions are required to enable a vast number of off-chain transactions.
https://cointelegraph.com/explained/lightning-network-explained
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In the simplest terms, how it’ll work is -- we’ll open something called a payment channel between us and record its opening on the Blockchain. Now, you and I can transact any number of times through this payment channel and it can stay open for any number of hours, days, weeks or decades. The only time we would touch the Blockchain ever again will be when we would want to close the channel. Then, we’ll write the final status of the transactions that occurred through the channel on the Blockchain.
This is very much a means of scaling the network without increasing the block size as only a few on-chain transactions are required to enable a vast number of off-chain transactions.
Thanks, i didn't know that someone need an on-chain transaction into LN and forget that connection between LN channel is possible.
But i think block size still become the problem when users only make few transaction (2 or less) and they decide to use on-chain transaction and many users think this way.
Why will block size be a problem?
A lot of bitcoin transactions are dust transactions that do not really require the blockchain, like payments to merchants.
If a lot of these transactions take place off-chain on the lightning network then the main chain will be cheaper to use.
