hashcash mailing-list

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Web Archives view the gmane.org hashcash mailing list archive (nice threaded view of discussion) or the freelists.org hashash mailing list archive (more basic, but non frames)

NNTP you can also read and post to the hashcash list via gmane nntp gateway news://news.gmane.org/gmane.mail.spam.hashcash. ie For people who's browser / newsreader combo is not integrated, use the nntp server news.gmane.org and subscribe to local news group gmane.mail.spam.hashcash.