Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-07-02 Thread Alex Kotenko
Ok, agreed. I will submit a pull request to BIP72 then. Not sure about escaping though. It is indeed not critical for bitcoin URIs, but still it is a part of RFC, don't think we should go against it. Andreas, we will implement this on our side, with bluetooth on r= and web address on r1=.

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-07-01 Thread Alex Kotenko
In my mind it's not like the client's phone is going all directions at the same time. There should be a priority method and fallback method(s). ​And I ​see p2p radio as priority, and web as fallback, and BIP21 in the end as always-working-default. ​So I'm keeping support for it all while want to

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-07-01 Thread Alex Kotenko
a distinction here. Also because of backwards compatibility to the status quo. On 07/01/2014 03:03 PM, Alex Kotenko wrote: In my mind it's not like the client's phone is going all directions at the same time. There should be a priority method and fallback method(s). ​And I ​see p2p radio

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-06-30 Thread Alex Kotenko
It took some time but we have finally implemented bluetooth integration offered by Andreas in our bitcoin payment terminals. ​However it's not ideal at the moment. Basically the main problem is that in the BIP72 there is no way to provide a fallback alternative URI for payment request fetch if

Re: [Bitcoin-development] instant confirmation via payment protocol backwards compatible proto buffer extension

2014-06-16 Thread Alex Kotenko
this involvement regulateable. Otherwise I think the Bitcoin experiment will fail. Best regards, Alex Kotenko 2014-06-16 18:16 GMT+01:00 Lawrence Nahum lawre...@greenaddress.it: Mike Hearn mike at plan99.net writes: As long as miners stick to Satoshi's first seen rule, which is the default, it's

Re: [Bitcoin-development] DNS seeds unstable

2014-06-11 Thread Alex Kotenko
if all looks fine with this seed from your side. Best regards, Alex Kotenko 2014-05-22 9:58 GMT+01:00 Andreas Schildbach andr...@schildbach.de: Hi Alex, I'm not sure if you saw this message. Your seeds are not reachable from my ISP unfortunately. Cheers, Andreas

Re: [Bitcoin-development] testnet-seed.bitcoin.petertodd.org is up again

2014-06-01 Thread Alex Kotenko
, but that isn't a good solution even if it might work for some resolvers. Rob On Fri, 30 May 2014 15:13:36 +0100, Alex Kotenko wrote: Hmm, you might be right, as queries dig @node.alexykot.me [8] testnet-seed.alexykot.me [9] ​and dig @node.alexykot.me [10] -p 18353 testnet-seed.alexykot.me [11

Re: [Bitcoin-development] testnet-seed.bitcoin.petertodd.org is up again

2014-05-30 Thread Alex Kotenko
seed ​ to help me debug ​mine ? Best regards, Alex Kotenko 2014-05-30 10:43 GMT+01:00 Peter Todd p...@petertodd.org: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 27 May 2014 02:19:39 GMT+03:00, Andreas Schildbach andr...@schildbach.de wrote: Hey, really sorry I don't have

Re: [Bitcoin-development] DNS seeds unstable

2014-05-21 Thread Alex Kotenko
with testnet DNS seeder? Best regards, Alex Kotenko 2014-05-20 1:50 GMT+01:00 Robert McKay rob...@mckay.com: On Tue, 20 May 2014 01:44:29 +0100, Robert McKay wrote: On Mon, 19 May 2014 19:49:52 -0400, Jeff Garzik wrote: On Mon, May 19, 2014 at 4:36 PM, Robert McKay rob...@mckay.com wrote

Re: [Bitcoin-development] DNS seeds unstable

2014-05-21 Thread Alex Kotenko
Misunderstanding. Both seeds are available on port 53 via BIND forwarding. Just also each DNS seed is available separately on it's own port. Best regards, Alex Kotenko 2014-05-21 12:03 GMT+01:00 Andreas Schildbach andr...@schildbach.de: Great, thanks for this contribution! Do you plan

Re: [Bitcoin-development] Paper Currency

2014-05-19 Thread Alex Kotenko
the notes - he has control over physical object itself, ideally for a period of time. ​With some active powered electronics in place it would be easy, but how do we do it without anything active in place? ​ Best regards, Alex Kotenko 2014-05-18 21:10 GMT+01:00 Natanael natanae...@gmail.com

Re: [Bitcoin-development] Paper Currency

2014-05-19 Thread Alex Kotenko
Asking random ignorant stranger to care to protect themselves never works. We need solution that requires strictly zero effort. Best regards, Alex Kotenko 2014-05-19 14:06 GMT+01:00 Brooks Boyd bo...@midnightdesign.ws: 2014-05-18 13:14 GMT+01:00 Andreas Schildbach andr...@schildbach.de

Re: [Bitcoin-development] Paper Currency

2014-05-19 Thread Alex Kotenko
Hmm, this is firmcoin thing looks like what I mean. They don't have a solution yet, and prices they quote smartcards are unacceptable, but if they will manage to get down in selfcost - that may work. Ok, I'll follow them and see what it will come to. Best regards, Alex Kotenko 2014-05-19 13:55

Re: [Bitcoin-development] DNS seeds unstable

2014-05-19 Thread Alex Kotenko
IP addresses for it. That's unfortunate as it needs much more spendings from me to operate, second IP address will cost nearly as much as the server itself. ​Can anybody help with this? I cannot into C++ to fix that myself. ​ Best regards, Alex Kotenko 2014-05-17 13:39 GMT+01:00 Andreas

Re: [Bitcoin-development] DNS seeds unstable

2014-05-19 Thread Alex Kotenko
, 2014, at 4:14 PM, Alex Kotenko alexy...@gmail.com wrote: Hmm, I've mostly setup what's promised, testing DNS seeds now. There is one problem I see that I can't really solve myself. This dnsseed daemon cannot serve more than one name at once, which means that I cannot serve testnet and mainnet

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Alex Kotenko
if someone else tries to reach your wallet with his own NFC - how can we distinguish between deliberate redeem by owner and fraudulent redeem by anybody else with custom built long range NFC antenna? Any ideas? Best regards, Alex Kotenko 2014-05-17 17:40 GMT+01:00 Gregory Maxwell gmaxw

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Alex Kotenko
Yes, but it must not sacrifice usability. It's paper money, people are used to it and they have rather high standard of expectations in this area. Any usbility sacrifices in this area result into failure of the whole thing. Best regards, Alex Kotenko 2014-05-18 13:14 GMT+01:00 Andreas

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Alex Kotenko
putting your bitcoin wallet on it. ​So really I see ​only issues of technical security in here, and this is the problem I'm seeking solutions for. Best regards, Alex Kotenko 2014-05-18 14:50 GMT+01:00 Natanael natanae...@gmail.com: Now you are talking about Trusted Platform Modules. Like

Re: [Bitcoin-development] DNS seeds unstable

2014-05-17 Thread Alex Kotenko
, and also a well connected nodes for mainnet and testnet on the same server. Is this a good plan? Will this all help? Best regards, Alex Kotenko 2014-05-17 12:39 GMT+01:00 Andreas Schildbach andr...@schildbach.de: I think the best way to contribute to the infrastructure is actually what we're

Re: [Bitcoin-development] DNS seeds unstable

2014-05-16 Thread Alex Kotenko
the nodelist. So I've set up and will run a well connected testnet node, as we need it for the XBTerminal. Please let me know if I can somehow help to fix the DNS discovery issue also. Best regards, Alex Kotenko 2014-05-16 17:46 GMT+01:00 Laszlo Hanyecz las...@heliacal.net: It looks like

Re: [Bitcoin-development] DNS seeds unstable

2014-05-16 Thread Alex Kotenko
Ok, what do I need to do? How do I host a testnet seed myself? Best regards, Alex Kotenko 2014-05-16 23:02 GMT+01:00 Jeff Garzik jgar...@bitpay.com: There are only two testnet seeds listed in bitcoind, and one of them returns SERVFAIL (testnet-seed.bitcoin.petertodd.org) and the other just

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-22 Thread Alex Kotenko
I know that general approach to interaction design in Bitcoin assumes minimal to no difference between payer and payee, and generally I agree with this approach. However, for the sake of my PoS development this assumption is wrong by default, as PoS is a specialized hardware, and one who cared to

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-21 Thread Alex Kotenko
2014-03-21 9:47 GMT+00:00 Andreas Schildbach andr...@schildbach.de: On 03/20/2014 05:14 PM, Alex Kotenko wrote: Hmm, if we're inventing an URI for bluetooth, I'd rather follow existing URI's patterns. BT is strictly point-to-point connection, so BT MAC should be considered as server

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-21 Thread Alex Kotenko
2014-03-21 14:51 GMT+00:00 Andreas Schildbach andr...@schildbach.de: Quoting from RFC 3986, Section 3.4. Query: The characters slash (/) and question mark (?) may represent data within the query component. Ok.​​ So BIP72 with a BT URI in the 'r' parameter? Yes.​​

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-20 Thread Alex Kotenko
2014-03-20 8:08 GMT+00:00 Andreas Schildbach andr...@schildbach.de: On 03/20/2014 03:22 AM, Alex Kotenko wrote: 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

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-20 Thread Alex Kotenko
2014-03-20 17:31 GMT+00:00 Jeff Garzik jgar...@bitpay.com: On Thu, Mar 20, 2014 at 8:12 AM, Adam Back a...@cypherspace.org wrote: Whats a sensible limit on practical/convenient QR code size? Extremely limited. Preferably under 100 bytes. You will see increasingly poor operating in varying

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-20 Thread Alex Kotenko
Hmm, is there any other way to do it? Can we provide a signed payment request and verify the sign on receiving side and this way protect from bluetooth MitM attack? Quick googling showed that SSL over bluetooth isn't a very well developed area, and my own skills are not enough to quickly implement

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-20 Thread Alex Kotenko
, this overlaps somewhat with the PKI signing in BIP70, but not entirely - you might want to serve unsigned payment requests, but still have confidentiality and authenticity for a local face to face transaction. The signing and encryption does different things. On Thu, Mar 20, 2014 at 7:20 PM, Alex Kotenko

Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments

2014-03-19 Thread Alex Kotenko
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

Re: [Bitcoin-development] Instant / contactless payments

2014-03-10 Thread Alex Kotenko
2014-03-08 8:52 GMT+00:00 Jan Vornberger j...@uos.de: ​​ On Thu, Mar 06, 2014 at 02:39:52PM +, Alex Kotenko wrote: Not sure if you've seen it, but here is how we do NFC right now http://www.youtube.com/watch?v=DGOMIG9JUY8 with XBTerminal. Very interesting, thanks for sharing

Re: [Bitcoin-development] Instant / contactless payments

2014-03-10 Thread Alex Kotenko
It heavily depends on where you use it. Here in UK any card payments are often limited to minimum of £5 in small shops that have heavy transaction fees burden and low margins. Big networks with more resources often let you pay as little as you want by card, and they more often have NFC enabled POS

Re: [Bitcoin-development] Instant / contactless payments

2014-03-10 Thread Alex Kotenko
Ah, I see, so it's only payee who has to enable it, payer side is on by default. Then fine, situation is better than I thought. We'll look at implementing BIP70 asap. Best regards, Alex Kotenko 2014-03-10 19:28 GMT+00:00 Andreas Schildbach andr...@schildbach.de: On 03/10/2014 04:09 PM, Alex

Re: [Bitcoin-development] Instant / contactless payments

2014-03-06 Thread Alex Kotenko
Hi Mike Not sure if you've seen it, but here is how we do NFC right now http://www.youtube.com/watch?v=DGOMIG9JUY8 with XBTerminal. For now this is just an NDEF URI message with Bitcoin URI inside, and then transaction itself propagated to the network by the phone using it's own Internet

Re: [Bitcoin-development] Instant / contactless payments

2014-03-06 Thread Alex Kotenko
2014-03-06 17:03 GMT+00:00 Mike Hearn m...@plan99.net: About the video - I'm curious how your device is better than just a regular tablet. Could you give us the elevator pitch? :) sure, here: - tougher than phone/tablet. Phone dropped on the tiled floor is likely to die instantly. Our device