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

[CryptAxe <cryptaxe@gmail.com>]

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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.


On 09/27/2017 12:35 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. 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 the sender that they are sending to a non-fresh
> address that may no longer be controlled by the receiver anymore.
>
> Also, an even better idea is to set up an "address expiration
> service". When you delete a wallet, you first send off an "expiration
> notice" which is just a message (signed with the private key) saying
> "I am about to delete this address, here is my new address". When
> someone tries to send to that address, they first consult the address
> expiration service, and the service will either tell them "this
> address is not expired, proceed", or "this address has been expired,
> please send to this other address instead...". Basically like a 301
> redirect, but for addresses. I don't think address expiration should
> be part of the protocol.
>
...

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