Salesforce has won a patent outlining how a blockchain-based platform can be used to prevent spam or other unwanted emails from hitting inboxes.
Following DoS attacks on the ethereum network last year, an attacker has picked an easier target to spam: Ropsten, the ethereum testing network.
Email-forwarding service Composed aims to help the global fight against spam by making senders pay a small fee in bitcoin.
The block chain has potential uses beyond storing transactions, but could they pose a risk to bitcoin?
