<oembed><type>rich</type><version>1.0</version><author_name>npub1ad7209g90jnu400x74quws0xv8gpxs2fxnjexnpwqnrxwa39exdq5gl2p6</author_name><author_url>https://nostr.ae/npub1ad7209g90jnu400x74quws0xv8gpxs2fxnjexnpwqnrxwa39exdq5gl2p6</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2012-11-29&#xA;📝 Original message:Hi,&#xA;&#xA;not sure if you already noticed, but I and my friends are actively working&#xA;on bitcoin hardware wallet. This should be pocket size device with&#xA;something like 256kB flash and 80 MHz CPU, talking with the computer over&#xA;USB. User will prepare transaction on the machine, send it to the device,&#xA;device shows target address on the display and user confirms it by pressing&#xA;the button.&#xA;&#xA;We&#39;re trying to make bitcoin payments safe even on hacked computer. For&#xA;this reason we&#39;re also implementing SPV so device don&#39;t need to trust&#xA;computer with any kind of information. The biggest existing problem is that&#xA;user cannot be sure that the address displayed on computer screen is&#xA;correct and he&#39;s confirming valid address.&#xA;&#xA;I don&#39;t have any solution for this problem yet. I just appreciate an&#xA;activity in payment protocol area, because it can (with some care) solve&#xA;this problem and my appeal si to keep all this simple. I&#39;d be very happy&#xA;with simple payment protocol which can be implemented even on devices like&#xA;I&#39;m working on, so device with few widely used certificates stored in the&#xA;memory will be able to display origin of the invoice and confirm its&#xA;validity.&#xA;&#xA;slush&#xA;&#xA;&#xA;On Thu, Nov 29, 2012 at 1:30 AM, Watson Ladd &lt;wbl at uchicago.edu&gt; wrote:&#xA;&#xA;&gt; After doing more thinking, what about letting a spend sign more&#xA;&gt; information associated with the transaction, such as a transaction ID&#xA;&gt; provided by the merchant? This seems to solve a lot of the problems being&#xA;&gt; put forward, with much less complexity.&#xA;&gt;&#xA;&gt; ------------------------------------------------------------------------------&#xA;&gt; Keep yourself connected to Go Parallel:&#xA;&gt; VERIFY Test and improve your parallel project with help from experts&#xA;&gt; and peers. http://goparallel.sourceforge.net&#xA;&gt; _______________________________________________&#xA;&gt; Bitcoin-development mailing list&#xA;&gt; Bitcoin-development at lists.sourceforge.net&#xA;&gt; https://lists.sourceforge.net/lists/listinfo/bitcoin-development&#xA;&gt;&#xA;&gt;&#xA;-------------- next part --------------&#xA;An HTML attachment was scrubbed...&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20121129/fe7ebf3e/attachment.html&gt;</html></oembed>