Bitcoin’s URI scheme is a way to encode addresses, amount of Bitcoin to send, label and message, it is used to make handling wallets easier for the user as all you need to know is a URI that you’ll input into a wallet and just hit the send button!

A new suggestion came to light on the Bitcoin-dev mailing list about optional bech32 address support in the Bitcoin URI scheme, bech32 is a segwit address format that starts with “bc” and was recently supported by Bitcoin’s network, the suggestion is still early but may lead to a single URI scheme that works both on legacy and segwit wallets. We’ll keep an eye on it!