Re: [bitcoin-dev] BIP for segwit compatibility URIs

[Clark Moody <clark@clarkmoody.com>]

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Since we don't know what sort of address changes will happen later on, you
could make this future-proof by passing a list of addresses to `addr`.

The syntax is

bitcoin:<address>[?addr=<address>[,<address>[,<address>]]]

The addresses passed as a comma-separated list to the `addr` parameter are
in descending order of preference, with highest first. A consumer of this
URI should attempt to understand each address in the list before falling
back to the next address and finally to the base address after `bitcoin:`.

Example:

bitcoin:3xBase58compatibleAddress?addr=fancyFutureEncoding0x01,bech32address1qx01

The spending wallet would attempt to spend to "fancyFutureEncoding0x01"
then to "bech32address1qx01" and finally to "3xBase58compatibleAddress".

Thanks,

-Clark


On Sun, Oct 14, 2018 at 3:14 PM Srintuar via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:

>
> An extremely simple BIP write-up for a backward compatible URI scheme to
> help with segwit adoption by online stores and merchants.
>
>
>
> ====
>
> This BIP is a modification of an earlier [[bip-0021.mediawiki|BIP 0021]]
> by Nils Schneider and Matt Corallo
>
> ==Abstract==
> This BIP proposes a URI scheme which allows for backward compatibility
> with native segwit (bech32) wallets and legcy wallets (base58)
>
> ==Motivation==
> The purpose of this URI scheme is to enable all users to easily make
> payments from any wallet, without allowing backward compatibility to be a
> barrier to segwit adoption. This BIP allows a merchant to preferentially
> receive payments to a bech32 address, while gracefully allowing older
> clients to make base58 encoded payments.
>
> ==Specification==
>
> === Query Keys ===
>
> *addr: an alternative bitcoin destination which is preferred over the
> "bitcoinaddress" field of the url
>
> == Appendix ==
>
> === Simpler syntax ===
>
>
>  <nowiki>bitcoin:<address>[?amount=<amount>][?label=<label>][?message=<message>][?addr=<bech32address>]</nowiki>
>
> === Examples ===
>
> Just the address:
>
>  bitcoin:3BnsWZiTdYVrqiPh2RP3q9Y3ZqvhbCN2it?addr=bc1q5u92yq20hss4rc99mfu23h4dxkxn4uuyqd5dzy&amount=50&label=Luke-Jr&message=Donation%20for%20project%20xyz
>
>
> == Reference Implementations ==
> === Bitcoin clients ===
>
> * none yet
>
> _______________________________________________
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> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>

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