Updated first sentence.
Removed "considered to be", as the fact it is a payment system is not controversial, and changed "the" to "a" as there are multiple payment systems for bitcoin, of which lightning is one..
* Make up a comma.
* Make up a comma.
* Remove 's'
* stored 'in' the blockchain
* Make up a comma.
* 'make' purchases
* paywall => payroll
* Make up a comma.
* Make up a comma.
* are => is
* Remove 's'
* Make up the blank.
* of => on
* gods=>goods
* Remove the modification of "paywall => payroll".
* fix "pay wall"