See spam filter and spam account. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Spam filtering can be configured to trap messages ... coming from an address maintained by the user is always valid. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires ...

But there is little doubt that certain transactions serve no other purpose than to stuff the Bitcoin network and blockchain. LaurentMT and Le Calvez more specifically define spam as transactions that ...