[Bitcoin-development] About the small number of bitcoin nodes

2014-05-18 Thread Raúl Martínez
About the small number of bitcoin nodes: Hi, I read the message that Mike Hearn sent to this mailing list some days ago (2014-04-07 11:34:43) related to the number of bitcoin full nodes. As an owner of two Bitcoin Nodes, one in my home computer and one in a dedicated server, I believe I can contri

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Natanael
The problem with not involving any electronics is that somebody needs to generate a recoverable private key that we have to trust haven't recovered the private key. The only plausible solution is multisignature P2SH addresses where you trust several independent entities to not collude instead, whe

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Jerry Felix
Thanks for all the feedback, and for everyone who read through the docs. My BIP numbering was a blunder, and I have revised the numbering to be PCP-0 (Paper Currency Proposal Number 0) through PCP-4. I think I was brain-dead on that, sorry, and I am now on PCP. Please allow me to walk you

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Alex Kotenko
Erm, few things here. ​- I can't see really how to embed electronics capable to run an SPV cli​ent into printed paper. I know that passive NFC tags can be printed on paper, but not actual chips and/or power modules. So we are talking about a completely different things here. - even with paper notes

[Bitcoin-development] About the small number of bitcoin nodes

2014-05-18 Thread Raúl Martínez
About the small number of bitcoin nodes: Hi, I read the message that Mike Hearn sent to this mailing list some days ago (2014-04-07 11:34:43) related to the number of bitcoin full nodes. As an owner of two Bitcoin Nodes, one in my home computer and one in a dedicated server, I believe I can contri

Re: [Bitcoin-development] Bitcoin Protocol Specification

2014-05-18 Thread Adam Back
Suggestion: maybe you want to write and post here a paragraph summarizing the topic of your paper so people can know if they feel qualified and if they need to review it from their interests. Adam On Sun, May 18, 2014 at 03:35:33PM +0200, Krzysztof Okupski wrote: >Dear all, > >I'd like to kindly

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Andreas Schildbach
Jerry, some feedback on generating space-efficient QR codes. QR codes have 4 possible encodings, see "Storage": http://en.wikipedia.org/wiki/QR_code The encoding you're proposing in BIP81 switches you to binary mode without actually using all the bits. So you'll end up with bloaty QR codes. One fi

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Natanael
Now you are talking about Trusted Platform Modules. Like smartcards, actually. Devices that won't leak their keys but let the holder spend the coins. It could even have it's own simple SPV wallet client to make it easier to handle. And they'd use the attestation features provided by the TPM to prov

[Bitcoin-development] Bitcoin Protocol Specification

2014-05-18 Thread Krzysztof Okupski
Dear all, I'd like to kindly ask, those of you that have a bit of spare time, to take a look at a Bitcoin protocol specification I've written. It is still in development and, as some of you have already indicated, needs improvement. I'd be very thankful if some of you could take the time to review

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 Schildbach

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Andreas Schildbach
> One problem we couldn't figure out here though - how to protect the > notes from unauthorized redeem. Like 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 ran

Re: [Bitcoin-development] Paper Currency

2014-05-18 Thread Alex Kotenko
I had a long discussion recently with somebody who wants and has resources to do exactly this - paper currency representing bitcoins. Yet we've been thinking mostly about a centralized solution, where one party is producing and maintaining paper currency, with bitcoins tied to each note verifiable