The motivation write up here was pretty good for explaining the differences between this and and the usual URI method: https://github.com/bitcoin/bips/blob/mast

The motivation write up here was pretty good for explaining the differences between this and and the usual URI method: https://github.com/bitcoin/bips/blob/master/bip-0070.mediawiki https://github.com/bitcoin/bips/blob/master/bip-0070.mediawi... URI method (what I'm used to from clicking a link to pay): https://github.com/bitcoin/bips/blob/master/bip-0021.mediawiki https://github.com/bitcoin/bips/blob/master/bip-0021.mediawi...