* "hashcash survey: Please reply if you are using it"
@ 2025-02-11 23:28 Andrew Cohen
2025-02-13 7:45 ` Alberto Luaces
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Cohen @ 2025-02-11 23:28 UTC (permalink / raw)
To: ding
Using hashcash?
--
Andrew Cohen
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: "hashcash survey: Please reply if you are using it"
2025-02-11 23:28 "hashcash survey: Please reply if you are using it" Andrew Cohen
@ 2025-02-13 7:45 ` Alberto Luaces
2025-02-14 22:03 ` Björn Bidar
0 siblings, 1 reply; 3+ messages in thread
From: Alberto Luaces @ 2025-02-13 7:45 UTC (permalink / raw)
To: ding
Andrew Cohen <acohen@ust.hk> writes:
> Using hashcash?
I do, but it's useless, so it wouldn't matter that it disappeared.
--
Alberto
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: "hashcash survey: Please reply if you are using it"
2025-02-13 7:45 ` Alberto Luaces
@ 2025-02-14 22:03 ` Björn Bidar
0 siblings, 0 replies; 3+ messages in thread
From: Björn Bidar @ 2025-02-14 22:03 UTC (permalink / raw)
To: Alberto Luaces; +Cc: ding
Alberto Luaces <aluaces@udc.es> writes:
> Andrew Cohen <acohen@ust.hk> writes:
>
>> Using hashcash?
>
> I do, but it's useless, so it wouldn't matter that it disappeared.
There's a derived implementation "Email Postmark Validation Algorithm"
which at least was supported till about 2014:
https://web.archive.org/web/20140425234054/http://office.microsoft.com/en-au/outlook-help/discontinued-features-and-modified-functionality-in-outlook-2010-HA010354944.aspx
Strangely the specification documentation was still updated in 2022:
https://learn.microsoft.com/en-us/openspecs/exchange_server_protocols/ms-oxpsval/f894e839-22a2-4f72-a1af-a7de40089bc8#published-version
https://en.wikipedia.org/wiki/Hashcash
I also think it's not useful anymore.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2025-02-14 22:03 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2025-02-11 23:28 "hashcash survey: Please reply if you are using it" Andrew Cohen
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2025-02-14 22:03 ` Björn Bidar
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