Have you thought about combining this with BIP-47? You could associate payment codes with email via DNS.

It would be nice if there was a way to get rid of the announcement transaction in BIP-47 and establish a shared secret out of bound. That would simplify things, at the cost of an additional burden of storing more than an HD seed to recover a wallet that received funds this way.

Perhaps the sender can email to the recipient the information they need to retrieve the funds. The (first) transaction could have a time locked refund in it, in case the payment code is stale.

Sjors

> Op 1 dec. 2017, om 04:08 heeft Douglas Roark via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> het volgende geschreven:
> 
> On 2017/11/30 14:20, mandar mulherkar via bitcoin-dev wrote:
>> I was wondering in terms of mass adoption, instead of long wallet
>> addresses, maybe there should be a DNS-like decentralized mapping
>> service to provide a user@crypto address?
> 
> A few years ago, I was part of an effort with Armory and Verisign to
> make something similar to what you're describing.
> https://tools.ietf.org/html/draft-wiley-paymentassoc-00 is where you can
> find the one and only official draft. I worked on a follow-up with some
> changes and some nice appendices, explaining some nice tricks one could
> use to make payment management flexible. For various reasons, it never
> got published. I think it's an interesting draft that could be turned
> into something useful. Among other things, it was able to leverage BIP32
> and allow payment requests to be generated that automatically pointed
> payees to the correct branch. DNSSEC may have some issues but, AFAIK,
> it's as the easiest way to bootstrap identity to a common, reasonably
> secure standard.
> 
> --
> ---
> Douglas Roark
> Cryptocurrency, network security, travel, and art.
> https://onename.com/droark
> joroark@vt.edu
> PGP key ID: 26623924
> 
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev