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 Latest 25 txns from a total Of 21384 transactions (> more than 25 PendingTxns)
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TxHash Age From To Value [TxFee]
0x8f1b780cfbe73278f9e273bc0c893df42e30a5fd6748069071f4832fd916c260(pending)0xcfd7b36049ab0692ac07275260154be78f35769a  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x3f4ac1587c67abc2469bde95d675d00a3cf286576251eacff39485fc060af8e9(pending)0x7b5aab846aac85db78a4fdd26e540f20fb717ae9  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x511bcdca4154eadd9282d4dd5e79adce59cf5d9b915441bf6e265543ad8d3f8b(pending)0x11d3b910576f7a53cb2bc17872f70b8fd39d37a4  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x2dc0a457abb0dac6b2668f24b7dab81e68678a809cd8b1be4a3047789c67733b(pending)0x9a90352378b2c3821e8fa4aed1058b645806510f  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x8b53a7231e8c9ef26ff2a71785b4e74460abb480f6435abd2d52f707052a413f(pending)0x822c87ead8a7ff22647cdd491ff71ff48ad168c7  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xcac9fef501466bfc5c4e2ef90eb3c5bf23f9e5e42d3e6588a2accc6daa1e7a1e(pending)0x9ad560bb8eabc54127af0a37688ac5f09cb3145e  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x9f93d3da121e2b1d5847c533f95d5abe596bbaf2ca0db4e4d0484a9fce744bec(pending)0x4462f75799d5c46ebaaff4f3635fb35eebf93328  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x8076d0273c006a797ded0b75a05e23443013fb8fd464cab0346cb731e0ac7458(pending)0x200487741838854741d44273062a41af34fdf3c3  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xcb774a30571f0cc8378caebd05f2a63f41c140071f51396ec3c5afe8ff854902(pending)0x6dc2ade5646828abea29d91759a997a2a792faad  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xa7429154ab7277d5e844cfaffbe3dcce013073e8ca882c0bfe0d76cb26e45e1b(pending)0x0ae7f3048910bfc2f48434ae44bd8b5015102171  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xd8ec1a0f43c9985c7fdcfa4bda1d3ae8282d338861a7bd4fa297f0e10398cd4b(pending)0x460144175ce674100f02439b0681c6af37dee9c1  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xc242b27040ba417a5932c308fd5a0e1936bd59a9f1b72e8d67ada655890fdd79(pending)0x9122de2f13e65acd9fa2d1bfe6f2588c67ef753d  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x88a14a75722f7e38c2c0f1fc1687568782b4808afd9b56dae2845d585e68d863(pending)0x94305eb0fbf553a9757991103faa70815817626a  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xe58d7a8ce92f4b301ef1a8bd32826abd6be7bcf37808b5aa546b529134e278fe(pending)0xece3429183b5edbadd5cd62c58e0ed5c4dcc1b1c  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x44d5b18087074fcab1e723fa89eb1e6cf10273fc1295d53a3ffa15b2dbd0ca94(pending)0x23c348a0dfbdd0f811018c888828b5d2000ea095  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xeb259c4fccaca28d07b34fd49c38405df4d7d33ec85c47564ffd23d048b4c3bf(pending)0x6c8a3447b147673275cccf2892ade33a21f49d6b  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xadd7506a4d3591b28551f4065e442c6b05d9923d4f13b14e8359f7af3cec93c1(pending)0xaabd6ad8c4739569422b315905ae0548c61c6ab2  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x637b17372ee6898a85adc0f69f57de9179039b561945468a019a9db88b5c41aa(pending)0x6cf224add9e629ca3cbcd0c5ac2df72785baa64e  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x54483bd7f716ef316dd929460c70056799ee1dd9b845409e0d9a9656ab4f004f(pending)0xc3b4e09a279a9a742d6886c0ddd94c0f19e3f65a  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xce15cf8fcd5d9fb5948ae385bbba6dae3438b2c3b5b0d8a0fd2640e2ce68a417(pending)0x24e0c3b6f8bccadc465ab35981cec4ca98f43e7c  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x5287fea1415d255b8f0cdaf680196250d98d314f1c3d2ba44643db6f3713bc66(pending)0x8b321258e604f48bbb2489166ac595cd25cd891b  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x8775382904dc650199b2a39484d9eeeb1a90476f9aa127d90ba90bfa97df0adc(pending)0xea850a4942589cdbbcb6875bc77a700ac069c624  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xc5e710783c5db5882ffeec8d380fcc3e15f750b6bc3720421fcb8b021dda5f9d(pending)0x1bf1c5db423bce32e615be940e0e1910a18eaba5  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0xfde3778aa338a7322f28ac7926800ec09e226f35821c7d116f2369d776fa32e2(pending)0x7632447a4f2184043f9080f1efbf44b984704e24  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
0x2aa9e1083bbda666f06e03cf9b6fddbc4c68bff9b7a72ca065fc416b5a29c427(pending)0x220f1540ce26cdaf3665f593eb511bfff72ca900  IN  0xd0929d411954c47438dc1d871dd6081f5c5e149c0 Ether(pending)
 Internal Transactions as a result of Contract Execution
 Latest 8 Internal Transactions

ParentTxHash Block Age From To Value
0x3faa84dd300ad4fb55c2c6fe32349836e2c26607374e7afa8c0fb32898bdbf37531383564 days 33 mins ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.0005 Ether
0xe621b0462afa94d10ad2652524310a7790b7938c42c5b7b7d95fd8161e0c3200525396374 days 2 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.089424 Ether
0xb15cf0f18e5b8586439dabbb9a13ad2ed06051a8c5199960fec9f77664460a66525394474 days 2 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.04555673 Ether
0xed3522837c249a7025249c7a2a4485f7e65b1683d5c84776b6818220889e3cad517476387 days 13 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.0001 Ether
0xc38e440ef032eb0ff12a3872f6c687f28ba7b0e44172cc99ef2c778e2828ee195057477107 days 9 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.441512 Ether
0xa0b8893ecf300aaa207cc8d9e85ac4700d9319fa3a86fe536ff97d7f518f9e725020325113 days 14 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.088496 Ether
0xa0c459d2260af165cd1a6d3174c6183e6074d5728e455727c34b0e84e649b5b74996078117 days 18 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.210066974 Ether
0x2a8774717a95383700c231d0ed1b05acd2f5460c0794a34fd1013091f9c29f934977257120 days 21 hrs ago0xd0929d411954c47438dc1d871dd6081f5c5e149c0xdfb0acd77b0a9538d2d1b05399a1f254a541076f0.1 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) Solidity compiler bugs.

Contract Source Code Verified (Exact match)
Contract Name: Refereum
Compiler Version: v0.4.11+commit.68ef5810
Optimization Enabled: Yes
Runs (Optimiser):  10000



  Contract Source Code   Find Similiar Contracts

pragma solidity 0.4.11;

contract RegistryICAPInterface {
    function parse(bytes32 _icap) constant returns(address, bytes32, bool);
    function institutions(bytes32 _institution) constant returns(address);
}

contract EToken2Interface {
    function registryICAP() constant returns(RegistryICAPInterface);
    function baseUnit(bytes32 _symbol) constant returns(uint8);
    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 issueAsset(bytes32 _symbol, uint _value, string _name, string _description, uint8 _baseUnit, bool _isReissuable) returns(bool);
    function reissueAsset(bytes32 _symbol, uint _value) returns(bool);
    function revokeAsset(bytes32 _symbol, uint _value) returns(bool);
    function setProxy(address _address, bytes32 _symbol) returns(bool);
    function lockAsset(bytes32 _symbol) 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 AssetInterface {
    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 ERC20Interface {
    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 symbol() constant returns(string);
    function decimals() constant returns(uint8);
    // function name() constant returns(string);
}

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);
    function balanceOf(address _owner) constant returns(uint);
}

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 Refereum is ERC20Interface, AssetProxyInterface, Bytes32 {
    // Assigned EToken2, immutable.
    EToken2Interface 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(EToken2Interface _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(AssetInterface) {
        return AssetInterface(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(EToken2Interface) {
        return etoken2;
    }
}

    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":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://98e94b8b6bc6c305ad672235323039c0f64eae1b06a90d411d66a33af7ccf506

 

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