Verify that a contract is a proxy contract pointing to an implementation.
Module name (must be 'contract')
contract Action name (must be 'verifyproxycontract')
verifyproxycontract Proxy contract address hash 40-character hexadecimal address hash with 0x prefix
^0x[a-fA-F0-9]{40}$"0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae"