Take a look at BIP 73: https://github.com/bitcoin/bips/blob/master/bip-0073.mediawiki On Wed, Mar 19, 2014 at 10:22 PM, Alex Kotenko wrote: > Hi Andreas > > > I'm implementing support for BIP70 in my POS at the moment, and I've just > realized that with options you're proposing usecase I'm looking for is not > covered. > > Right now, before BIP70, I'm sending BIP21 URI via NFC or QR code, and I > need to still be able to use it for backwards compatibility. But at the > same time I want to be able to support BIP70. And also I want to avoid > using external servers, the concept of my POS is that everything is > happening between just payer's phone and payee's POS device. This means > that BIP72 HTTP(S) link inside Bitcoin URI is not suitable for me. > > You're also offering an option to include Base43 encoded PR body right > inside the Bitcoin URI, but in a way that is not backwards compatible with > BIP21. > > In the end this all means that there is no way for me to at the same time > keep backwards compatibility with all wallets not supporting NFC and BIP70 > (all other wallets right now), and keep things inside POS without need for > external servers. > > I understand your intention behind base43 encoding and noncompatible URI - > you want to make most possible use of QR codes. But I wonder - did you > compare this base43 to base64 encoded request in a binary QR code format? > How much do we actually win in total bytes capacity at a price of > noncompatibility and increased complexity? > > And also maybe we can extend BIP72 to include encoded payment request in > the URL directly in a backwards compatible way? > > > Best regards, > Alex Kotenko > > > 2014-03-02 11:50 GMT+00:00 Mike Hearn : > >> Thanks Andreas. >> >> For BIP standardisation, I think the VIEW intent seems like an obvious >> one. Bluetooth support probably should come later if/when we put >> encryption/auth on the RFCOMM link (probably SSL). >> >> >> ------------------------------------------------------------------------------ >> Flow-based real-time traffic analytics software. Cisco certified tool. >> Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >> Customize your own dashboards, set traffic alerts and generate reports. >> Network behavioral analysis & security monitoring. All-in-one tool. >> >> http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk >> >> _______________________________________________ >> Bitcoin-development mailing list >> Bitcoin-development@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/bitcoin-development >> >> > > > ------------------------------------------------------------------------------ > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and their > applications. Written by three acclaimed leaders in the field, > this first edition is now available. Download your free book today! > http://p.sf.net/sfu/13534_NeoTech > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > > -- Jeff Garzik Bitcoin core developer and open source evangelist BitPay, Inc. https://bitpay.com/