Weekend Roundup: Shopping with Bitcoins on the Mastercard Network, First Publicly Traded BTC Exchange On Monday, CoinSpark released a new tool that allows bitcoiners to attach private messages to transactions.
Open sourced CoinSpark is a colored coin protocol that allows users to move assets around the blockchain much like Counterparty.
CEO Gideon Greenspan told CoinTelegraph: "The guiding principle of CoinSpark is that users can use a lightwight wallet on their computer. […] [Both the sender and […]
