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 Latest 25 txns from a total Of 32790 transactions

TxHash Age From To Value [TxFee]
0xd216ba3c0d5547449a4ae7455f471be90d9ec3332878d24eb185b3280ad592ec35 mins agoBittrex  IN   PropyToken0 Ether0.0065761
0x78402015276309c68ccb631274eb7db61f894f9562ad0e9534d469552380d25e1 hr 12 mins agoBittrex  IN   PropyToken0 Ether0.0080761
0x0f8f133ba2b21a3b4d1e7b2ad7d510a7b5c1486bd9a9776e366075a2456cfc631 hr 56 mins ago0xc10a4fc05d5d9354bd426b036eb8591a1e97cc98  IN   PropyToken0 Ether0.000254125
0x40cbc2bb1f396beb85f8ff89d0b7fd0446bea1ac2a0ad776f8cb202dbfbbe4c42 hrs 56 mins agoBittrex  IN   PropyToken0 Ether0.0065697
0x85c8c26d97321dcd62122c82b189f532dca319cceb8be567c9b81d82f8419e825 hrs 14 mins ago0x45cee5decbd2840a5881534b2d07afe7f67c5705  IN   PropyToken0 Ether0.000254125
0xf28aafa8cb7b988cd35a9fbc4c3e5e7e77aceaf6dfe493caee98b062c5965b965 hrs 56 mins ago0x07f38a099e97d809b7cc43fbf5241b95a2458359  IN   PropyToken0 Ether0.00050697
0xbd9867f9753a42468b08c6ed76e3f37392ba6732418de8cdf33365a46a8f9e646 hrs 6 mins agoBittrex  IN   PropyToken0 Ether0.0080697
0xaff062d01b2a0e92bd3ec6f6cfc4bbd33145efdceeb4df9e9564a7433baa13407 hrs 16 mins ago0x3dee4a4e076e8d82859d241db0baf46f112cfa23  IN   PropyToken0 Ether0.000152283
0x7e96660e61f25d7c1d3b4048368c89a90663bede72597cc97819ba05ab1222b98 hrs 55 mins ago0x7f1ab4f31d4bc218433d6cc1e9a1a77346336e2d  IN   PropyToken0 Ether0.000254125
0x803f2452c31261e76cbf5a5ca91d84ff7e2bd6da8dcff6929785c99f2981a25f13 hrs 21 mins ago0x0c42756c395df4930d6df6ea1d892ec1f9ef9d64  IN   PropyToken0 Ether0.005241145
0x221e72ad454bb05ca92bf3a96c0be8b53a54874e9a8d102286c85c528a10867c13 hrs 23 mins ago0x0c42756c395df4930d6df6ea1d892ec1f9ef9d64  IN   PropyToken0 Ether0.0039
0xcbf362dc980605c4eae8d7d4257ab7f0c1b8be9df06cc6ece9ed6e4dbbb5569d13 hrs 26 mins ago0x0c42756c395df4930d6df6ea1d892ec1f9ef9d64  IN   PropyToken0 Ether0.0039
0xd11dceae8fcfe572255e7561e73e8bc3184db981881fe38f8374c972a49cda9114 hrs 20 mins ago0xd91935a7e596a2db0361313defd2f8e08d697c73  IN   PropyToken0 Ether0.00758262
0x92a3f63201cf2d659680d45d67b4d183a3d0869f7ffaeb40f61a7afe974d3f4d15 hrs 4 mins ago0xfa4b5be3f2f84f56703c42eb22142744e95a2c58  IN   PropyToken0 Ether0.007101336
0x00da1cf9c64cd9bcc1fc2dbd75a194d604ddcd3a0a73a1958faf4e0ab086b7f815 hrs 30 mins ago0xf3f46b5aea84fad6408b1e02b9072339f4eecadb  IN   PropyToken0 Ether0.002077067
0x8eeb7ffeca172e77a5bf5fa4ca953d8c948ce5d59b49376dacbfdeaf521ef0d515 hrs 31 mins ago0x7223466d7540f2a6fd35289e0e88d0c1a01665d4  IN   PropyToken0 Ether0.001775547
0x2de79f1bdc66917130f6db309387b6c1977b9ead2787fc5495b344fbd488d4f515 hrs 55 mins ago0x8a4d5690167a03f073c9b8df81d5cd7eb5508930  IN   PropyToken0 Ether0.00050761
0x54d0598ec102ae7918ec7e55c3ce99cfe33a05423c4abd85d445660bf0f06f7416 hrs agoHitBTC_2  IN   PropyToken0 Ether0.000403805
0x9ac667378b387edb2c8e7dd8d04378de7a3095c1ed1c5b29dde4c286dabf77d916 hrs 18 mins ago0x0424f49cd49f2a738fad1806383dceb9ba6203c9  IN   PropyToken0 Ether0.004569081
0xd719e2cd3ea7c56492b15464b529e7007280834e78684c43adbc71e49f6e9a2416 hrs 47 mins ago0xba826fec90cefdf6706858e5fbafcb27a290fbe0  IN   PropyToken0 Ether0.006704765
0x3c298bdf8384cdbaca311da16cdb42c3c9293e38e3c01d914e0afa4132cbdea618 hrs 7 mins ago0xfdb16996831753d5331ff813c29a93c76834a0ad  IN   PropyToken0 Ether0.007106968
0x0c0b0809565586ed373f8ba8298e0b1186e20555f1d974798e3c7f391ecae32218 hrs 17 mins ago0xba826fec90cefdf6706858e5fbafcb27a290fbe0  IN   PropyToken0 Ether0.004280333
0x12eb460c91a8ee16f0a344a47e4a394c5559d8bd63c878b3744911dc17eb815618 hrs 44 mins ago0x1062a747393198f70f71ec65a582423dba7e5ab3  IN   PropyToken0 Ether0.007106968
0x9fceb8befd7dfb316ddd4b9281ec878256759d831dfe0168aee3303cf2b6d1d419 hrs 50 mins ago0x119879418426ce56a15b795a068bbb49fdff6708  IN   PropyToken0 Ether0.00758646
0xda87029154988fcc5b44aff1a33662982b9bc45730dc7d8217593dc1cf0cdde821 hrs 30 mins ago0x02f5359117678f8ea38f82a3d601e43e4db92f9e  IN   PropyToken0 Ether0.000557525
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 Internal Transactions as a result of Contract Execution
 Latest 22 Internal Transactions

ParentTxHash Block Age From To Value
0x1976209e799150c5d72501582d552636d636cacc62859df9f4e782e4dd9ad08a5120732152 days 19 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.000000001 Ether
0x787c138279a5fe71b2f049b9372df49c077297e197e4e13eee584324463985424818434205 days 3 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.002 Ether
0x58a8d07b1eba36ff9b9f4a3589e5295067ab082ada34121c53285e924a3a51ce4788401210 days 4 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.29236175 Ether
0x982639874586886fe7c8765d7430a277689f288ab5ea519bf482a778666884684743426218 days 1 hr ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.29 Ether
0xe9d99bbbbbc4db186517e277548f0d7ff1940a07a46a786573b5d398475481e34743381218 days 1 hr ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.3 Ether
0x1ea968ad48b49e4d9aaeab94ce24be95d4906cdf0ec60e5eb972efb9a20aa3384328567293 days 19 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.19 Ether
0x95b195943863c6354d1c1e1c8ec02f109bd1f9d36b45546afd53e01f6beacecb4328561293 days 19 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.19 Ether
0x4371b2f824527c5f3cf3b9101d2fb334fe2e19e0edcc849ea70d0920fc7c554d4248047318 days 4 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.1 Ether
0x61723c23d2ab371d67d1be4d3fecb88c7dc130e7de1e66291e2b6397d310beb54234829321 days 22 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.02 Ether
0x5a923081d607ce20e9ce6b075f6750bec8e2506586914866d15e223c898c3c7d4234759321 days 22 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x8d342b9474033a8ed04ff1ab654c64cf5b71daa10.01 Ether
0x5a42ccc14373c3c1949abb491dadb89a9bd0a13d4363ee5bd31cd65be11a2bc74185056335 days 8 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4250.033 Ether
0x4af57aee1aed4a3e8804220e0db81242a88a0eae46fa02e5d5850596fb67f2ca4184990335 days 9 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4250.018 Ether
0x92970401ce32a4c676557f537bba0745f8c19df0848ae0e93471c164a54b97f04183628335 days 17 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4252 Ether
0x176c375159c394c854d82e35c99863afbc8d1813cb0d0f1b640afb7f60bc17b04183626335 days 17 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4252 Ether
0x7ef90eaaec3ed94ac4e165429cdf163be3b974fda33431c994607694041e3bac4162735340 days 17 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4251 Ether
0x7ef90eaaec3ed94ac4e165429cdf163be3b974fda33431c994607694041e3bac4162735340 days 17 hrs ago0x7ea2df0f49d1cf7cb3a328f0038822b08aeb0ac10x226bb599a12c826476e3a771454697ea52e9e2201 Ether
0xd36726510c987bf5d881d8c90c1a4d5c3ce3ba0db2930d6aa8cd9b4781b9f9c64162484340 days 18 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4250.01 Ether
0xd7451f4434589ea4f24f183832fe027e7452205a72f59bca326f8e85d8c2772b4161011341 days 3 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4254 Ether
0x20013e382edec7be97f57afa0a682d4695d5b7b5545a12cd059698f24acaa1b14160997341 days 3 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4255.1 Ether
0xd6c225e1554a2b1eab673378b313aff28815d70b96c8005194b3ede3818bb5904160997341 days 3 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4255 Ether
0x4a064d57d5e3ef2043ce5ab27e26118e19465c9f076ddbf507d3b8ce3873a2894160995341 days 3 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4255 Ether
0xd90655618dcdf2e822128d0c30f82aa3c22bec79b3a83ae438e9d52147ef59494160988341 days 3 hrs ago0x226bb599a12c826476e3a771454697ea52e9e2200x729aa9df8b31969ac73110de62823d2f607ae4251.5 Ether
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Warning: The compiled contract might be susceptible to ZeroFunctionSelector (very low-severity), DelegateCallReturnValue (low-severity), ECRecoverMalformedInput (medium-severity), SkipEmptyStringLiteral (low-severity), ConstantOptimizerSubtraction (low-severity) Solidity compiler bugs.

Contract Source Code Verified (Exact match)
Contract Name: PropyToken
Compiler Version: v0.4.8+commit.60cc1668
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

/**
 * This software is a subject to Ambisafe License Agreement.
 * No use or distribution is allowed without written permission from Ambisafe.
 * https://www.ambisafe.co/terms-of-use/
 */

pragma solidity 0.4.8;

contract EToken2 {
    function baseUnit(bytes32 _symbol) constant returns(uint8);
    function name(bytes32 _symbol) constant returns(string);
    function description(bytes32 _symbol) constant returns(string);
    function owner(bytes32 _symbol) constant returns(address);
    function isOwner(address _owner, bytes32 _symbol) constant returns(bool);
    function totalSupply(bytes32 _symbol) constant returns(uint);
    function balanceOf(address _holder, bytes32 _symbol) constant returns(uint);
    function isLocked(bytes32 _symbol) constant returns(bool);
    function proxyTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
    function proxyApprove(address _spender, uint _value, bytes32 _symbol, address _sender) returns(bool);
    function allowance(address _from, address _spender, bytes32 _symbol) constant returns(uint);
    function proxyTransferFromWithReference(address _from, address _to, uint _value, bytes32 _symbol, string _reference, address _sender) returns(bool);
}

contract Asset {
    function _performTransferWithReference(address _to, uint _value, string _reference, address _sender) returns(bool);
    function _performTransferToICAPWithReference(bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
    function _performApprove(address _spender, uint _value, address _sender) returns(bool);    
    function _performTransferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) returns(bool);
    function _performTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
    function _performGeneric(bytes _data, address _sender) payable returns(bytes32) {
        throw;
    }
}

contract ERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed from, address indexed spender, uint256 value);

    function totalSupply() constant returns(uint256 supply);
    function balanceOf(address _owner) constant returns(uint256 balance);
    function transfer(address _to, uint256 _value) returns(bool success);
    function transferFrom(address _from, address _to, uint256 _value) returns(bool success);
    function approve(address _spender, uint256 _value) returns(bool success);
    function allowance(address _owner, address _spender) constant returns(uint256 remaining);
    function decimals() constant returns(uint8);
}

contract AssetProxyInterface {
    function _forwardApprove(address _spender, uint _value, address _sender) returns(bool);    
    function _forwardTransferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) returns(bool);
    function _forwardTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
}

contract Bytes32 {
    function _bytes32(string _input) internal constant returns(bytes32 result) {
        assembly {
            result := mload(add(_input, 32))
        }
    }
}

/**
 * @title EToken2 Asset Proxy.
 *
 * Proxy implements ERC20 interface and acts as a gateway to a single EToken2 asset.
 * Proxy adds etoken2Symbol and caller(sender) when forwarding requests to EToken2.
 * Every request that is made by caller first sent to the specific asset implementation
 * contract, which then calls back to be forwarded onto EToken2.
 *
 * Calls flow: Caller ->
 *             Proxy.func(...) ->
 *             Asset._performFunc(..., Caller.address) ->
 *             Proxy._forwardFunc(..., Caller.address) ->
 *             Platform.proxyFunc(..., symbol, Caller.address)
 *
 * Generic call flow: Caller ->
 *             Proxy.unknownFunc(...) ->
 *             Asset._performGeneric(..., Caller.address) ->
 *             Asset.unknownFunc(...)
 *
 * Asset implementation contract is mutable, but each user have an option to stick with
 * old implementation, through explicit decision made in timely manner, if he doesn't agree
 * with new rules.
 * Each user have a possibility to upgrade to latest asset contract implementation, without the
 * possibility to rollback.
 *
 * Note: all the non constant functions return false instead of throwing in case if state change
 * didn't happen yet.
 */
contract AssetProxy is ERC20, AssetProxyInterface, Bytes32 {
    // Assigned EToken2, immutable.
    EToken2 public etoken2;

    // Assigned symbol, immutable.
    bytes32 public etoken2Symbol;

    // Assigned name, immutable. For UI.
    string public name;
    string public symbol;

    /**
     * Sets EToken2 address, assigns symbol and name.
     *
     * Can be set only once.
     *
     * @param _etoken2 EToken2 contract address.
     * @param _symbol assigned symbol.
     * @param _name assigned name.
     *
     * @return success.
     */
    function init(EToken2 _etoken2, string _symbol, string _name) returns(bool) {
        if (address(etoken2) != 0x0) {
            return false;
        }
        etoken2 = _etoken2;
        etoken2Symbol = _bytes32(_symbol);
        name = _name;
        symbol = _symbol;
        return true;
    }

    /**
     * Only EToken2 is allowed to call.
     */
    modifier onlyEToken2() {
        if (msg.sender == address(etoken2)) {
            _;
        }
    }

    /**
     * Only current asset owner is allowed to call.
     */
    modifier onlyAssetOwner() {
        if (etoken2.isOwner(msg.sender, etoken2Symbol)) {
            _;
        }
    }

    /**
     * Returns asset implementation contract for current caller.
     *
     * @return asset implementation contract.
     */
    function _getAsset() internal returns(Asset) {
        return Asset(getVersionFor(msg.sender));
    }

    function recoverTokens(uint _value) onlyAssetOwner() returns(bool) {
        return this.transferWithReference(msg.sender, _value, 'Tokens recovery');
    }

    /**
     * Returns asset total supply.
     *
     * @return asset total supply.
     */
    function totalSupply() constant returns(uint) {
        return etoken2.totalSupply(etoken2Symbol);
    }

    /**
     * Returns asset balance for a particular holder.
     *
     * @param _owner holder address.
     *
     * @return holder balance.
     */
    function balanceOf(address _owner) constant returns(uint) {
        return etoken2.balanceOf(_owner, etoken2Symbol);
    }

    /**
     * Returns asset allowance from one holder to another.
     *
     * @param _from holder that allowed spending.
     * @param _spender holder that is allowed to spend.
     *
     * @return holder to spender allowance.
     */
    function allowance(address _from, address _spender) constant returns(uint) {
        return etoken2.allowance(_from, _spender, etoken2Symbol);
    }

    /**
     * Returns asset decimals.
     *
     * @return asset decimals.
     */
    function decimals() constant returns(uint8) {
        return etoken2.baseUnit(etoken2Symbol);
    }

    /**
     * Transfers asset balance from the caller to specified receiver.
     *
     * @param _to holder address to give to.
     * @param _value amount to transfer.
     *
     * @return success.
     */
    function transfer(address _to, uint _value) returns(bool) {
        return transferWithReference(_to, _value, '');
    }

    /**
     * Transfers asset balance from the caller to specified receiver adding specified comment.
     * Resolves asset implementation contract for the caller and forwards there arguments along with
     * the caller address.
     *
     * @param _to holder address to give to.
     * @param _value amount to transfer.
     * @param _reference transfer comment to be included in a EToken2's Transfer event.
     *
     * @return success.
     */
    function transferWithReference(address _to, uint _value, string _reference) returns(bool) {
        return _getAsset()._performTransferWithReference(_to, _value, _reference, msg.sender);
    }

    /**
     * Transfers asset balance from the caller to specified ICAP.
     *
     * @param _icap recipient ICAP to give to.
     * @param _value amount to transfer.
     *
     * @return success.
     */
    function transferToICAP(bytes32 _icap, uint _value) returns(bool) {
        return transferToICAPWithReference(_icap, _value, '');
    }

    /**
     * Transfers asset balance from the caller to specified ICAP adding specified comment.
     * Resolves asset implementation contract for the caller and forwards there arguments along with
     * the caller address.
     *
     * @param _icap recipient ICAP to give to.
     * @param _value amount to transfer.
     * @param _reference transfer comment to be included in a EToken2's Transfer event.
     *
     * @return success.
     */
    function transferToICAPWithReference(bytes32 _icap, uint _value, string _reference) returns(bool) {
        return _getAsset()._performTransferToICAPWithReference(_icap, _value, _reference, msg.sender);
    }

    /**
     * Prforms allowance transfer of asset balance between holders.
     *
     * @param _from holder address to take from.
     * @param _to holder address to give to.
     * @param _value amount to transfer.
     *
     * @return success.
     */
    function transferFrom(address _from, address _to, uint _value) returns(bool) {
        return transferFromWithReference(_from, _to, _value, '');
    }

    /**
     * Prforms allowance transfer of asset balance between holders adding specified comment.
     * Resolves asset implementation contract for the caller and forwards there arguments along with
     * the caller address.
     *
     * @param _from holder address to take from.
     * @param _to holder address to give to.
     * @param _value amount to transfer.
     * @param _reference transfer comment to be included in a EToken2's Transfer event.
     *
     * @return success.
     */
    function transferFromWithReference(address _from, address _to, uint _value, string _reference) returns(bool) {
        return _getAsset()._performTransferFromWithReference(_from, _to, _value, _reference, msg.sender);
    }

    /**
     * Performs transfer call on the EToken2 by the name of specified sender.
     *
     * Can only be called by asset implementation contract assigned to sender.
     *
     * @param _from holder address to take from.
     * @param _to holder address to give to.
     * @param _value amount to transfer.
     * @param _reference transfer comment to be included in a EToken2's Transfer event.
     * @param _sender initial caller.
     *
     * @return success.
     */
    function _forwardTransferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) onlyImplementationFor(_sender) returns(bool) {
        return etoken2.proxyTransferFromWithReference(_from, _to, _value, etoken2Symbol, _reference, _sender);
    }

    /**
     * Prforms allowance transfer of asset balance between holders.
     *
     * @param _from holder address to take from.
     * @param _icap recipient ICAP address to give to.
     * @param _value amount to transfer.
     *
     * @return success.
     */
    function transferFromToICAP(address _from, bytes32 _icap, uint _value) returns(bool) {
        return transferFromToICAPWithReference(_from, _icap, _value, '');
    }

    /**
     * Prforms allowance transfer of asset balance between holders adding specified comment.
     * Resolves asset implementation contract for the caller and forwards there arguments along with
     * the caller address.
     *
     * @param _from holder address to take from.
     * @param _icap recipient ICAP address to give to.
     * @param _value amount to transfer.
     * @param _reference transfer comment to be included in a EToken2's Transfer event.
     *
     * @return success.
     */
    function transferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference) returns(bool) {
        return _getAsset()._performTransferFromToICAPWithReference(_from, _icap, _value, _reference, msg.sender);
    }

    /**
     * Performs allowance transfer to ICAP call on the EToken2 by the name of specified sender.
     *
     * Can only be called by asset implementation contract assigned to sender.
     *
     * @param _from holder address to take from.
     * @param _icap recipient ICAP address to give to.
     * @param _value amount to transfer.
     * @param _reference transfer comment to be included in a EToken2's Transfer event.
     * @param _sender initial caller.
     *
     * @return success.
     */
    function _forwardTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) onlyImplementationFor(_sender) returns(bool) {
        return etoken2.proxyTransferFromToICAPWithReference(_from, _icap, _value, _reference, _sender);
    }

    /**
     * Sets asset spending allowance for a specified spender.
     * Resolves asset implementation contract for the caller and forwards there arguments along with
     * the caller address.
     *
     * @param _spender holder address to set allowance to.
     * @param _value amount to allow.
     *
     * @return success.
     */
    function approve(address _spender, uint _value) returns(bool) {
        return _getAsset()._performApprove(_spender, _value, msg.sender);
    }

    /**
     * Performs allowance setting call on the EToken2 by the name of specified sender.
     *
     * Can only be called by asset implementation contract assigned to sender.
     *
     * @param _spender holder address to set allowance to.
     * @param _value amount to allow.
     * @param _sender initial caller.
     *
     * @return success.
     */
    function _forwardApprove(address _spender, uint _value, address _sender) onlyImplementationFor(_sender) returns(bool) {
        return etoken2.proxyApprove(_spender, _value, etoken2Symbol, _sender);
    }

    /**
     * Emits ERC20 Transfer event on this contract.
     *
     * Can only be, and, called by assigned EToken2 when asset transfer happens.
     */
    function emitTransfer(address _from, address _to, uint _value) onlyEToken2() {
        Transfer(_from, _to, _value);
    }

    /**
     * Emits ERC20 Approval event on this contract.
     *
     * Can only be, and, called by assigned EToken2 when asset allowance set happens.
     */
    function emitApprove(address _from, address _spender, uint _value) onlyEToken2() {
        Approval(_from, _spender, _value);
    }

    /**
     * Resolves asset implementation contract for the caller and forwards there transaction data,
     * along with the value. This allows for proxy interface growth.
     */
    function () payable {
        bytes32 result = _getAsset()._performGeneric.value(msg.value)(msg.data, msg.sender);
        assembly {
            mstore(0, result)
            return(0, 32)
        }
    }

    /**
     * Indicates an upgrade freeze-time start, and the next asset implementation contract.
     */
    event UpgradeProposal(address newVersion);

    // Current asset implementation contract address.
    address latestVersion;

    // Proposed next asset implementation contract address.
    address pendingVersion;

    // Upgrade freeze-time start.
    uint pendingVersionTimestamp;

    // Timespan for users to review the new implementation and make decision.
    uint constant UPGRADE_FREEZE_TIME = 3 days;

    // Asset implementation contract address that user decided to stick with.
    // 0x0 means that user uses latest version.
    mapping(address => address) userOptOutVersion;

    /**
     * Only asset implementation contract assigned to sender is allowed to call.
     */
    modifier onlyImplementationFor(address _sender) {
        if (getVersionFor(_sender) == msg.sender) {
            _;
        }
    }

    /**
     * Returns asset implementation contract address assigned to sender.
     *
     * @param _sender sender address.
     *
     * @return asset implementation contract address.
     */
    function getVersionFor(address _sender) constant returns(address) {
        return userOptOutVersion[_sender] == 0 ? latestVersion : userOptOutVersion[_sender];
    }

    /**
     * Returns current asset implementation contract address.
     *
     * @return asset implementation contract address.
     */
    function getLatestVersion() constant returns(address) {
        return latestVersion;
    }

    /**
     * Returns proposed next asset implementation contract address.
     *
     * @return asset implementation contract address.
     */
    function getPendingVersion() constant returns(address) {
        return pendingVersion;
    }

    /**
     * Returns upgrade freeze-time start.
     *
     * @return freeze-time start.
     */
    function getPendingVersionTimestamp() constant returns(uint) {
        return pendingVersionTimestamp;
    }

    /**
     * Propose next asset implementation contract address.
     *
     * Can only be called by current asset owner.
     *
     * Note: freeze-time should not be applied for the initial setup.
     *
     * @param _newVersion asset implementation contract address.
     *
     * @return success.
     */
    function proposeUpgrade(address _newVersion) onlyAssetOwner() returns(bool) {
        // Should not already be in the upgrading process.
        if (pendingVersion != 0x0) {
            return false;
        }
        // New version address should be other than 0x0.
        if (_newVersion == 0x0) {
            return false;
        }
        // Don't apply freeze-time for the initial setup.
        if (latestVersion == 0x0) {
            latestVersion = _newVersion;
            return true;
        }
        pendingVersion = _newVersion;
        pendingVersionTimestamp = now;
        UpgradeProposal(_newVersion);
        return true;
    }

    /**
     * Cancel the pending upgrade process.
     *
     * Can only be called by current asset owner.
     *
     * @return success.
     */
    function purgeUpgrade() onlyAssetOwner() returns(bool) {
        if (pendingVersion == 0x0) {
            return false;
        }
        delete pendingVersion;
        delete pendingVersionTimestamp;
        return true;
    }

    /**
     * Finalize an upgrade process setting new asset implementation contract address.
     *
     * Can only be called after an upgrade freeze-time.
     *
     * @return success.
     */
    function commitUpgrade() returns(bool) {
        if (pendingVersion == 0x0) {
            return false;
        }
        if (pendingVersionTimestamp + UPGRADE_FREEZE_TIME > now) {
            return false;
        }
        latestVersion = pendingVersion;
        delete pendingVersion;
        delete pendingVersionTimestamp;
        return true;
    }

    /**
     * Disagree with proposed upgrade, and stick with current asset implementation
     * until further explicit agreement to upgrade.
     *
     * @return success.
     */
    function optOut() returns(bool) {
        if (userOptOutVersion[msg.sender] != 0x0) {
            return false;
        }
        userOptOutVersion[msg.sender] = latestVersion;
        return true;
    }

    /**
     * Implicitly agree to upgrade to current and future asset implementation upgrades,
     * until further explicit disagreement.
     *
     * @return success.
     */
    function optIn() returns(bool) {
        delete userOptOutVersion[msg.sender];
        return true;
    }

    // Backwards compatibility.
    function multiAsset() constant returns(EToken2) {
        return etoken2;
    }
}

contract PropyToken is AssetProxy {
    function change(string _symbol, string _name) onlyAssetOwner() returns(bool) {
        if (etoken2.isLocked(etoken2Symbol)) {
            return false;
        }
        name = _name;
        symbol = _symbol;
        return true;
    }
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"multiAsset","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"commitUpgrade","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"getLatestVersion","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"},{"name":"_sender","type":"address"}],"name":"_forwardTransferFromWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"emitApprove","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"emitTransfer","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"recoverTokens","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"etoken2","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"getPendingVersionTimestamp","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"purgeUpgrade","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"optIn","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"}],"name":"transferFromWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"}],"name":"transferToICAP","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"}],"name":"transferToICAPWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_sender","type":"address"}],"name":"_forwardApprove","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_symbol","type":"string"},{"name":"_name","type":"string"}],"name":"change","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"},{"name":"_sender","type":"address"}],"name":"_forwardTransferFromToICAPWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"}],"name":"transferFromToICAPWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"}],"name":"transferFromToICAP","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"etoken2Symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"getPendingVersion","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"}],"name":"transferWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_etoken2","type":"address"},{"name":"_symbol","type":"string"},{"name":"_name","type":"string"}],"name":"init","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_newVersion","type":"address"}],"name":"proposeUpgrade","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"optOut","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_from","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_sender","type":"address"}],"name":"getVersionFor","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"payable":true,"type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newVersion","type":"address"}],"name":"UpgradeProposal","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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   Swarm Source:
bzzr://921b47fe3810a9ce6b238d40c647951315aa5f116d1c85ffe01639754dfda9a6

 

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