Coinbase said it will add support for the ERC-20 token and warned users not to send it to networks other than Ethereum. The exchange added that it will begin trading once there is sufficient supply and liquidity conditions are met. Trading is expected to begin sometime after the airdrop on March 23. The USD-ARB trading pairs on Coinbase will be launched in phases, according to the announcement. Additionally, the coin will carry the “experimental” tag on the exchange. The experimental label on...