Date: Fri, 29 Sep 2017 09:52:03 -0400
From: Peter Todd <pete@petertodd.org>
To: Andreas Schildbach <andreas@schildbach.de>,
	Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Message-ID: <20170929135203.GA16240@savin.petertodd.org>
References: <20170927160654.GA12492@savin.petertodd.org>
	<oqihpf$5gc$1@blaine.gmane.org>
	<20170929014543.GB11956@savin.petertodd.org>
	<oql14j$4qq$1@blaine.gmane.org>
	<20170929095537.GA15286@savin.petertodd.org>
	<oqlf95$8kq$1@blaine.gmane.org>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
	protocol="application/pgp-signature"; boundary="azLHFNyN32YCQGCU"
Content-Disposition: inline
In-Reply-To: <oqlf95$8kq$1@blaine.gmane.org>
User-Agent: Mutt/1.5.23 (2014-03-12)
Subject: Re: [bitcoin-dev] Address expiration times should be added to
	BIP-173
Precedence: list


--azLHFNyN32YCQGCU
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Fri, Sep 29, 2017 at 02:45:32PM +0200, Andreas Schildbach via bitcoin-de=
v wrote:
> On 09/29/2017 11:55 AM, Peter Todd via bitcoin-dev wrote:
>=20
> >>> I'm well aware. As the payment protocol hasn't caught on - and doesn'=
t fully
> >>> overlap all the usecases that addresses do anyway - I think we should=
 consider
> >>> bringing this important feature to Bitcoin addresses too.
> >>
> >> Hasn't caught on? It is used for virtually all merchant transactions,
> >> plus person to person transactions between Bitcoin Wallet users.
> >=20
> > "Virtually all"?
> >=20
> > I regularly pay with Bitcoin, and I haven't seen the payment protocol u=
sed in
> > ages.
>=20
> I regularly pay with Bitcoin, and I haven't seen the payment protocol
> not being in use in ages.
>=20
> > Can you name some users of it?
>=20
> 15+ Mio Coinbase users

Lol, interesting mistake I made w/ Coinbase: my mobile wallets are all setu=
p in
ways that don't support the payment protocol w/ Coinbase, probably because =
come
to think of it they were (still are?) rejecting payment protocol requests o=
ver
proxies and Tor. And on my desktop setups payment protocol URLs don't work =
for
various reasons, and I'd forgotten I'd manually disabled them ages ago.

Just checked and Bitfinex, BTCC, and Shapeshift all don't seem to use the
payment protocol.

Other than BitPay and Coinbase, do you have an example of a service support=
ing
the payment protocol?

> ~10 Mio BitPay users
> 8 Mio Bitcoin Wallet users
> Plus Bitcoin Core, Electrum, etc (sorry no numbers)
>=20
> Probably the only usecase for naked addresses is paper wallets, right?
> I'm not sure if paper wallets can expire.

User-to-user payments pretty much always use naked addresses.

--=20
https://petertodd.org 'peter'[:-1]@petertodd.org

--azLHFNyN32YCQGCU
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: Digital signature

-----BEGIN PGP SIGNATURE-----

iQEcBAEBCAAGBQJZzk//AAoJECSBQD2l8JH7rmgH/j18CiwAAswJNTHgz7mr6E/G
5e+uaRnvAqnfNVUoLfs3vll1lOMkh3FXfuVwYJLffnNYToHdJpl+oZTRVDhF9C0T
P1vUxEe1XHjwETgwFi3M1ltjXP9EWilAi+hzMKeLELOg7ZxW3mNGlMlqkPSdJHag
fCJtMrt2M8v3++BpCY3piDShQf+wqM6vPxZbeFGrzSYK2EQ8JHVExVSxikcBvtq/
6hDhKqhE3YOPpPGgnaswNp2ki6mZuNvBaJ7M4cGOA4MDH7kT8QNaKAnISbJLAlyE
KPefAJ3GuDm9CqYN7B3k9AtIovQZQuK/HaS87crUTyskL7fDwo157Rr8MxABH8Y=
=p8IC
-----END PGP SIGNATURE-----

--azLHFNyN32YCQGCU--