[ 源代码： hashcash ]
软件包：hashcash（1.22-1 以及其他的）
hashcash 的相关链接
Debian 的资源：
下载源码包 hashcash：
- [hashcash_1.22-1.dsc]
- [hashcash_1.22.orig.tar.gz]
- [hashcash_1.22.orig.tar.gz.asc]
- [hashcash_1.22-1.debian.tar.xz]
维护者：
外部的资源：
- 主页 [hashcash.org]
相似软件包：
postage payment scheme for email based on hash calculations
Hashcash is a payment scheme that uses CPU cycles as the form of payment. This can be used as a counter-measure for junk email (spam) by using the hashcash token as a proof of payment for each email that you sent.