Ether is the cryptocurrency built on top of the open source Ethereum built on top of the open source blockchain, with smart contract functionality. At CoinHeatMap, allows to explore and search the Ethereum blockchain for transactions, addresses, tokens, prices and other activities. Market Cap: $211.577 B. Rank by Market Cap: 2. Circulating Supply: 115.123 M.Total Supply: N/A. 24 Hour Volume: $28.048 B.