Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Fri, Sep 29, 2017 at 02:45:32PM +0200, Andreas Schildbach via bitcoin-dev wrote: > On 09/29/2017 11:55 AM, Peter Todd via bitcoin-dev wrote: > > >>> 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

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On 09/29/2017 11:55 AM, Peter Todd via bitcoin-dev wrote: >>> 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. >> >>

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

Op 29 sep. 2017, om 05:18 heeft Peter Todd het volgende geschreven: > > On Thu, Sep 28, 2017 at 03:43:05PM +0300, Sjors Provoost via bitcoin-dev > wrote: >> Peter Todd wrote: >> Perhaps outside the scope of BIP173, but what about baking it into the >> protocol? That way a

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On 09/29/2017 03:45 AM, Peter Todd via bitcoin-dev wrote: > On Thu, Sep 28, 2017 at 12:09:59PM +0200, Andreas Schildbach via bitcoin-dev > wrote: >> This feels redundant to me; the payment protocol already has an >> expiration time. > > I'm well aware. As the payment protocol hasn't caught on -

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Thu, Sep 28, 2017 at 03:43:05PM +0300, Sjors Provoost via bitcoin-dev wrote: > Peter Todd wrote: > Perhaps outside the scope of BIP173, but what about baking it into the > protocol? That way a transaction that's sent too late, simply won't get > confirmed. This removes the need for refund

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Fri, Sep 29, 2017 at 1:50 AM, Peter Todd wrote: > What do you mean by "an embedded amount"? I ask you to pay 1 Bitcoin to bc1blahblah. ...you make a typo, or a poorly placed cosmic ray switches it in your ram to bc1blohblahbah. No problem, it'll get rejected. (even if

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Thu, Sep 28, 2017 at 12:58:30AM +, Gregory Maxwell wrote: > On Wed, Sep 27, 2017 at 4:06 PM, Peter Todd via bitcoin-dev > wrote: > > Re-use of old addresses is a major problem, not only for privacy, but also > > operationally: services like exchanges

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Thu, Sep 28, 2017 at 12:09:59PM +0200, Andreas Schildbach via bitcoin-dev wrote: > This feels redundant to me; the payment protocol already has an > expiration time. I'm well aware. As the payment protocol hasn't caught on - and doesn't fully overlap all the usecases that addresses do anyway

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Thursday 28 September 2017 2:13:48 PM Andreas Schildbach via bitcoin-dev wrote: > On 09/28/2017 02:43 PM, Sjors Provoost via bitcoin-dev wrote: > >> This feels redundant to me; the payment protocol already has an > >> expiration time. > > > > The BIP-70 payment protocol has significant

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

Op 28 sep. 2017, om 18:06 heeft Andreas Schildbach via bitcoin-dev het volgende geschreven: > > On 09/28/2017 04:41 PM, Sjors Provoost via bitcoin-dev wrote: > >>> The payment request message is just as one-way as an address is. It is >>> already being

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On 09/28/2017 04:41 PM, Sjors Provoost via bitcoin-dev wrote: >> The payment request message is just as one-way as an address is. It is >> already being emailed and printed on an invoice, in fact it often acts >> as the invoice. > > True and the more complicated fields, like a digital signature,

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

Op 28 sep. 2017, om 17:13 heeft Andreas Schildbach via bitcoin-dev het volgende geschreven: > > On 09/28/2017 02:43 PM, Sjors Provoost via bitcoin-dev wrote: > >>> This feels redundant to me; the payment protocol already has an >>> expiration time. >> >>

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On 09/28/2017 02:43 PM, Sjors Provoost via bitcoin-dev wrote: >> This feels redundant to me; the payment protocol already has an >> expiration time. > > The BIP-70 payment protocol has significant overhead and most importantly > requires back and forth. Emailing a bitcoin address or printing it

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

Peter Todd wrote: > > Re-use of old addresses is a major problem, not only for privacy, but also > operationally: services like exchanges frequently have problems with users > sending funds to addresses whose private keys have been lost or stolen; [...] > > To help combat this problem, I

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

First, there’s been no discussion so far for address expiration to be part of “the protocol” which usually means consensus rules or p2p. This is purely about wallets and wallet information exchange protocols. There’s no way for the sender to know whether an address has been used without a

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

rg > <bitcoin-dev-boun...@lists.linuxfoundation.org> on behalf of Chris > Priest via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> > *Sent:* Wednesday, September 27, 2017 3:35 PM > *To:* Peter Todd; Bitcoin Protocol Discussion > *Subject:* Re: [bitcoin-dev] Address expira

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

This feels redundant to me; the payment protocol already has an expiration time. On 09/27/2017 06:06 PM, Peter Todd via bitcoin-dev wrote: > Re-use of old addresses is a major problem, not only for privacy, but also > operationally: services like exchanges frequently have problems with users >

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Wed, Sep 27, 2017 at 7:35 PM, Chris Priest via bitcoin-dev wrote: > A better solution is to just have the sending wallet check to see if the > address you are about to send to has been used before. So every wallet needs all the addresses ever used and a

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Wed, Sep 27, 2017 at 12:06:54PM -0400, Peter Todd via bitcoin-dev wrote: > Being just an expiration time, seconds-level resolution is unnecessary, and > may give the wrong impression. I'd suggest either: > > 1) Hour resolution - 2^24 hours = 1914 years > 2) Month resolution - 2^16 months =

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Wed, Sep 27, 2017 at 12:03:44PM -0700, Mark Friedenbach wrote: > While there is a lot that I would like to comment on, for the moment I will > just mention that you should consider using the 17 bit relative time format > used in CSV as an offset from the birthdate of the address, a field all

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

On Wed, Sep 27, 2017 at 01:35:33PM -0600, Chris Priest wrote: > A better solution is to just have the sending wallet check to see if the > address you are about to send to has been used before. If it's a fresh My concern is not primarily people re-using addresses, but rather people using stale

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

27, 2017 3:35 PM To: Peter Todd; Bitcoin Protocol Discussion Subject: Re: [bitcoin-dev] Address expiration times should be added to BIP-173 A better solution is to just have the sending wallet check to see if the address you are about to send to has been used before. If it's a fresh address, it sends it

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

See https://github.com/bitcoin/bitcoin/pull/9722 What still needs to be done is that during the first start up after updating with this popup, the wallet needs to scan for addresses that have been used in the past. That way the popup isn't only shown for addresses that are reused after updating.

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

A better solution is to just have the sending wallet check to see if the address you are about to send to has been used before. If it's a fresh address, it sends it through without any popup alert. If the address has history going back a certain amount of time, then a popup comes up and notifies

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

While there is a lot that I would like to comment on, for the moment I will just mention that you should consider using the 17 bit relative time format used in CSV as an offset from the birthdate of the address, a field all addresses should also have. This would also mean that addresses cannot

Re: [bitcoin-dev] Address expiration times should be added to BIP-173

I think we need something like this. Hour resolution seems like the correct choice to me. Please someone steal whatever code you can from this PR when implementing the UI for BIP173 expiration: https://github.com/bitcoin/bitcoin/pull/9722 I have a rebased version as well if anyone wants it.