user132438: Why bitcoin addresses in testnet are not the same as in mainnet? For example ethereum address in mainnet can be used in testnet's (ropsten, rinkeby).

user208: Because using the same addresses for both is an enormous footgun. People could accidentally send funds on the wrong chain.

132438: <p>Why bitcoin addresses in testnet are not the same as in mainnet? For example ethereum address in mainnet can be used in testnet's (ropsten, rinkeby).</p>
 208: <p>Because using the same addresses for both is an enormous footgun. People could accidentally send funds on the wrong chain.</p>
