Different types of Blockchain available in Market these are Public Blockchain, Private Blockchain, and Consortium Blockchain. There are various Blockchain components that are available in the market like Ledger, Smart Contract, Consensus Network, Membership, Events, System Management, Wallet, System Integration.
John McCain and Al Sharpton. When John McCain ran for president in 2008, some commentary focused on the age gulf between him and Barack Obama. So McCain's announcement Tuesday that he will seek a sixth term in the Senate in November suggests that he must be near the upper end of the age range of Senate. Which he is. But, if McCain, who is now 78, is reelected, he probably won't even be one of the three oldest senators in the 115th Congress, much less history.
About John McCain Politician John McCain has an estimated net worth of $21 million. John McCain has been a U.S. senator from Arizona since 1987, and was the Republican nominee for president in 2008. A 1958 graduate of the U.S. Naval Academy, McCain had a 22-year military career as a pilot and officer in the Navy.