Yes I agree, also there is talks about a government body I know of warming to bitcoin by issuing addresses for use by a business and then all transactions can be tracked for that business entity. This is one proposal I saw put forward by a country specific bitcoin group to their government and so not allowing address reuse would neuter that :( ________________________________ From: s7r Sent: ‎27/‎03/‎2015 9:29 AM To: Gregory Maxwell; Tom Harding Cc: Bitcoin Development Subject: Re: [Bitcoin-development] Address Expiration to Prevent Reuse This should not be enforced by default. There are some use cases where address re-use is justified (a donation address spread on multiple static pages or even printed on papers/books?). For example, I offer some services on the internet for free, and I only have a bitcoin address for donations which is posted everywhere. Obviously this could possibly harm privacy, but not everyone who uses bitcoin wants to keep all transactions private. To the contrary, there are accounting cases when you need to archive all keys, hashes of transactions and everything (for example when using btc inside a company which is required by law to keep accounting registries). I know it's not recommended to use the same pubkey more than once, but the protocol was not designed this way. Enforcing something as described in this topic will undermine an user's rights to re-use his addresses, if a certain situation requires it. On 3/26/2015 11:44 PM, Gregory Maxwell wrote: > On Thu, Mar 26, 2015 at 9:26 PM, Tom Harding > wrote: >> I should have been clearer that the motivation for address >> expiration is to reduce the rate of increase of the massive pile >> of bitcoin addresses out there which have to be monitored >> forever for future payments. It could make a significant dent >> if something like this worked, and were used by default someday. > > Great, that can be accomplished by simply encoding an expiration > into the address people are using and specifying that clients > enforce it. > > ---------------------------------------------------------------------- -------- > > > Dive into the World of Parallel Programming The Go Parallel Website, sponsored > by Intel and developed in partnership with Slashdot Media, is your > hub for all things parallel software development, from weekly > thought leadership blogs to news, videos, case studies, tutorials > and more. Take a look and join the conversation now. > http://goparallel.sourceforge.net/ > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development