OpenBSD Handbook

Current snapshot · amd64 · Generated 2026-09-09

hashcash-1.22p1

hashcash anti-spam / denial of service counter-measure tool

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Description

The hashcash tool allows you to create hashcash stamps to attach to emails you send, and to verify hashcash stamps attached to emails you receive. Email senders attach hashcash stamps with the X-Hashcash: header. A hashcash stamp constitutes a proof-of-work which takes a parameterizable amount of work to compute for the sender. The recipient can verify received stamps efficiently.

Package information

Ports path
mail/hashcash
Package architecture
amd64
Maintainer
Armin Wolfermann <armin@wolfermann.org>
Categories
mail
Available flavors
None listed

These are ports metadata. Binary availability depends on the release, architecture and mirror. Build and test dependencies are not an installation checklist.

Direct dependencies

None listed in sqlports.

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