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Outline

•  contract AuthereumProxy *
•    - function ()
•    - function implementation()

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/**
 *Submitted for verification at Etherscan.io on 2019-11-03
*/

pragma solidity 0.5.12;
pragma experimental ABIEncoderV2;

 // @author Authereum, Inc.

/**
 * @title AuthereumProxy
 * @author Authereum, Inc.
 * @dev The Authereum Proxy.
 */

contract AuthereumProxy {
    string constant public authereumProxyVersion = "2019102500";

    /// @dev Storage slot with the address of the current implementation.
    /// @notice This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted 
    /// @notice by 1, and is validated in the constructor.
    bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /// @dev Set the implementation in the constructor
    /// @param _logic Address of the logic contract
    constructor(address _logic) public payable {
        bytes32 slot = IMPLEMENTATION_SLOT;
        assembly {
            sstore(slot, _logic)
        }
    }

    /// @dev Fallback function
    /// @notice A payable fallback needs to be implemented in the implementation contract
    /// @notice This is a low level function that doesn't return to its internal call site.
    /// @notice It will return to the external caller whatever the implementation returns.
    function () external payable {
        if (msg.data.length == 0) return;
        address _implementation = implementation();

        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize)

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas, _implementation, 0, calldatasize, 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize)

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize) }
            default { return(0, returndatasize) }
        }
    }

    /// @dev Returns the current implementation.
    /// @return Address of the current implementation
    function implementation() public view returns (address impl) {
        bytes32 slot = IMPLEMENTATION_SLOT;
        assembly {
            impl := sload(slot)
        }
    }
}

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[{"inputs":[{"internalType":"address","name":"_logic","type":"address"}],"payable":true,"stateMutability":"payable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"constant":true,"inputs":[],"name":"authereumProxyVersion","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"impl","type":"address"}],"payable":false,"stateMutability":"view","type":"function"}]

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0x6080604052600436106100295760003560e01c80635bea7d5d1461006e5780635c60da1b14610099575b600080369050141561003a5761006c565b60006100446100c4565b90503660008037600080366000845af43d6000803e8060008114610067573d6000f35b3d6000fd5b005b34801561007a57600080fd5b506100836100f5565b6040516100909190610191565b60405180910390f35b3480156100a557600080fd5b506100ae6100c4565b6040516100bb9190610176565b60405180910390f35b6000807f360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc60001b9050805491505090565b6040518060400160405280600a81526020017f323031393130323530300000000000000000000000000000000000000000000081525081565b610137816101cf565b82525050565b6000610148826101b3565b61015281856101be565b9350610162818560208601610201565b61016b81610234565b840191505092915050565b600060208201905061018b600083018461012e565b92915050565b600060208201905081810360008301526101ab818461013d565b905092915050565b600081519050919050565b600082825260208201905092915050565b60006101da826101e1565b9050919050565b600073ffffffffffffffffffffffffffffffffffffffff82169050919050565b60005b8381101561021f578082015181840152602081019050610204565b8381111561022e576000848401525b50505050565b6000601f19601f830116905091905056fea365627a7a72315820df4401333fb8c26a38547c751ff4c528d95f9c5a191e6bc81f110b41250720046c6578706572696d656e74616cf564736f6c634300050c0040

000000000000000000000000d8cab604bdd8cbb7c3eb0c26f7dc3abffb005a92

-----Decoded View---------------
Arg [0] : _logic (address): 0xD8CaB604BDd8cBb7c3eb0c26f7DC3AbFfb005A92

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000d8cab604bdd8cbb7c3eb0c26f7dc3abffb005a92

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bzzr://df4401333fb8c26a38547c751ff4c528d95f9c5a191e6bc81f110b4125072004