ash) BCC is an alternate acronym for Bitcoin Cash. The other is BCH. See Bitcoin Cash
opy) The field in an email header that names additional recipients for the message. It is similar to carbon copy (cc), but the names do not appear in the recipient's message. Not all email systems support the bcc feature. See fcc
Blind Carbon Copy
All the recipients whose addresses are in the bcc line in this Eudora mail client will be sent the message, but nobody will know who else got it.