Hi,

I am not sure why this wasn't discussed more but it seemed like a very good idea to me https://www.reddit.com/r/Bitcoin/comments/9iivej/its_been_like_a_year_and_bech32_adoption_remains/

QR code is very important for network wide adoption. The problem is bech32 qr code isn't backward compatible and noone is going to show two QR codes. Everyone is going safe with P2SH address qr code.

Example of proposed URI. I want not sure of technically best encoding, but this is just for ideas

bitcoin:3BnsWZiTdYVrqiPh2RP3q9Y3ZqvhbCN2it?bech32=bc1q5u92yq20hss4rc99mfu23h4dxkxn4uuyqd5dzy

bitcoin:3BnsWZiTdYVrqiPh2RP3q9Y3ZqvhbCN2it?keyhash=a70aa2014fbc2151e0a5da78a8dead358d3af384

bitcoin:3BnsWZiTdYVrqiPh2RP3q9Y3ZqvhbCN2it?amount=0.123&bech32=bc1q5u92yq20hss4rc99mfu23h4dxkxn4uuyqd5dzy

As merchants/exchanges adopt this QR code, wallets that support bech32 can chose to autopay to bech32 address  (for lower tx fee). This can create a network effect as more people start using bech32 and when we reach enough wallet adoption, people can shift to just showing bech32 QR codes