[Bitcoin-development] Bitcoin address TTL & key expiration?

[Jeff Garzik]

On Tue, Jul 15, 2014 at 10:48 AM, Luke Dashjr <luke at dashjr.org> wrote:
> They can already do this. It's perfectly valid for wallets/services to ignore
> (and not consider as payment) transactions using an address more than once.
> There might be race attacks if this is implemented in an immediate fashon
> (attacker transaction gets mined first to kill a payment), but should be
> pretty safe after a few blocks.

Sure it's valid.  However, few users will appreciate "you ignored my
deposit" as a feature.

Payment protocol just doesn't well the use cases of,
* an on-going payment stream from, e.g. Eligius to coinbase
* deposit addresses and deposit situations

-- 
Jeff Garzik
Bitcoin core developer and open source evangelist
BitPay, Inc.      https://bitpay.com/