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ERC-20
Add Token to MetaMask (Web3)Overview
Max Total Supply
500.16331999 DUSD
Holders
21
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 8 Decimals)
Balance
1.00385804 DUSDValue
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| # | Exchange | Pair | Price | 24H Volume | % Volume |
|---|
Contract Name:
DCAsset
Compiler Version
v0.3.6+commit.3fc68da
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/**
*Submitted for verification at Etherscan.io on 2016-09-15
*/
contract Assertive {
function assert(bool assertion) {
if (!assertion) throw;
}
}
contract TokenRecipient {
function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData);
}
contract Owned is Assertive {
address internal owner;
event SetOwner(address indexed previousOwner, address indexed newOwner);
function Owned () {
owner = msg.sender;
}
modifier onlyOwner {
assert(msg.sender == owner);
_
}
function setOwner(address newOwner) onlyOwner {
SetOwner(owner, newOwner);
owner = newOwner;
}
function getOwner() returns (address out) {
return owner;
}
}
contract StateTransferrable is Owned {
bool internal locked;
event Locked(address indexed from);
event PropertySet(address indexed from);
modifier onlyIfUnlocked {
assert(!locked);
_
}
modifier setter {
_
PropertySet(msg.sender);
}
modifier onlyOwnerUnlocked {
assert(!locked && msg.sender == owner);
_
}
function lock() onlyOwner onlyIfUnlocked {
locked = true;
Locked(msg.sender);
}
function isLocked() returns (bool status) {
return locked;
}
}
contract TrustEvents {
event AuthInit(address indexed from);
event AuthComplete(address indexed from, address indexed with);
event AuthPending(address indexed from);
event Unauthorized(address indexed from);
event InitCancel(address indexed from);
event NothingToCancel(address indexed from);
event SetMasterKey(address indexed from);
event AuthCancel(address indexed from, address indexed with);
event NameRegistered(address indexed from, bytes32 indexed name);
}
contract Trust is StateTransferrable, TrustEvents {
mapping (address => bool) public masterKeys;
mapping (address => bytes32) public nameRegistry;
address[] public masterKeyIndex;
mapping (address => bool) public masterKeyActive;
mapping (address => bool) public trustedClients;
mapping (uint256 => address) public functionCalls;
mapping (address => uint256) public functionCalling;
function activateMasterKey(address addr) internal {
if (!masterKeyActive[addr]) {
masterKeyActive[addr] = true;
masterKeyIndex.push(addr);
}
}
function setTrustedClient(address addr) onlyOwnerUnlocked setter {
trustedClients[addr] = true;
}
function untrustClient(address addr) multisig(sha3(msg.data)) {
trustedClients[addr] = false;
}
function trustClient(address addr) multisig(sha3(msg.data)) {
trustedClients[addr] = true;
}
function setMasterKey(address addr) onlyOwnerUnlocked {
assert(!masterKeys[addr]);
activateMasterKey(addr);
masterKeys[addr] = true;
SetMasterKey(msg.sender);
}
modifier onlyMasterKey {
assert(masterKeys[msg.sender]);
_
}
function extractMasterKeyIndexLength() returns (uint256 length) {
return masterKeyIndex.length;
}
function resetAction(uint256 hash) internal {
address addr = functionCalls[hash];
functionCalls[hash] = 0x0;
functionCalling[addr] = 0;
}
function authCancel(address from) external returns (uint8 status) {
if (!masterKeys[from] || !trustedClients[msg.sender]) {
Unauthorized(from);
return 0;
}
uint256 call = functionCalling[from];
if (call == 0) {
NothingToCancel(from);
return 1;
} else {
AuthCancel(from, from);
functionCalling[from] = 0;
functionCalls[call] = 0x0;
return 2;
}
}
function cancel() returns (uint8 code) {
if (!masterKeys[msg.sender]) {
Unauthorized(msg.sender);
return 0;
}
uint256 call = functionCalling[msg.sender];
if (call == 0) {
NothingToCancel(msg.sender);
return 1;
} else {
AuthCancel(msg.sender, msg.sender);
uint256 hash = functionCalling[msg.sender];
functionCalling[msg.sender] = 0x0;
functionCalls[hash] = 0;
return 2;
}
}
function authCall(address from, bytes32 hash) external returns (uint8 code) {
if (!masterKeys[from] && !trustedClients[msg.sender]) {
Unauthorized(from);
return 0;
}
if (functionCalling[from] == 0) {
if (functionCalls[uint256(hash)] == 0x0) {
functionCalls[uint256(hash)] = from;
functionCalling[from] = uint256(hash);
AuthInit(from);
return 1;
} else {
AuthComplete(functionCalls[uint256(hash)], from);
resetAction(uint256(hash));
return 2;
}
} else {
AuthPending(from);
return 3;
}
}
modifier multisig (bytes32 hash) {
if (!masterKeys[msg.sender]) {
Unauthorized(msg.sender);
} else if (functionCalling[msg.sender] == 0) {
if (functionCalls[uint256(hash)] == 0x0) {
functionCalls[uint256(hash)] = msg.sender;
functionCalling[msg.sender] = uint256(hash);
AuthInit(msg.sender);
} else {
AuthComplete(functionCalls[uint256(hash)], msg.sender);
resetAction(uint256(hash));
_
}
} else {
AuthPending(msg.sender);
}
}
function voteOutMasterKey(address addr) multisig(sha3(msg.data)) {
assert(masterKeys[addr]);
masterKeys[addr] = false;
}
function voteInMasterKey(address addr) multisig(sha3(msg.data)) {
assert(!masterKeys[addr]);
activateMasterKey(addr);
masterKeys[addr] = true;
}
function identify(bytes32 name) onlyMasterKey {
nameRegistry[msg.sender] = name;
NameRegistered(msg.sender, name);
}
function nameFor(address addr) returns (bytes32 name) {
return nameRegistry[addr];
}
}
contract TrustClient is StateTransferrable, TrustEvents {
address public trustAddress;
function setTrust(address addr) setter onlyOwnerUnlocked {
trustAddress = addr;
}
function nameFor(address addr) constant returns (bytes32 name) {
return Trust(trustAddress).nameFor(addr);
}
function cancel() returns (uint8 status) {
assert(trustAddress != address(0x0));
uint8 code = Trust(trustAddress).authCancel(msg.sender);
if (code == 0) Unauthorized(msg.sender);
else if (code == 1) NothingToCancel(msg.sender);
else if (code == 2) AuthCancel(msg.sender, msg.sender);
return code;
}
modifier multisig (bytes32 hash) {
assert(trustAddress != address(0x0));
address current = Trust(trustAddress).functionCalls(uint256(hash));
uint8 code = Trust(trustAddress).authCall(msg.sender, hash);
if (code == 0) Unauthorized(msg.sender);
else if (code == 1) AuthInit(msg.sender);
else if (code == 2) {
AuthComplete(current, msg.sender);
_
}
else if (code == 3) {
AuthPending(msg.sender);
}
}
}
contract Relay {
function relayReceiveApproval(address _caller, address _spender, uint256 _amount, bytes _extraData) returns (bool success);
}
contract TokenBase is Owned {
bytes32 public standard = 'Token 0.1';
bytes32 public name;
bytes32 public symbol;
uint256 public totalSupply;
bool public allowTransactions;
event Approval(address indexed from, address indexed spender, uint256 amount);
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
function transfer(address _to, uint256 _value) returns (bool success);
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success);
function approve(address _spender, uint256 _value) returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
function () {
throw;
}
}
contract Precision {
uint8 public decimals;
}
contract Token is TokenBase, Precision {}
contract Util {
function pow10(uint256 a, uint8 b) internal returns (uint256 result) {
for (uint8 i = 0; i < b; i++) {
a *= 10;
}
return a;
}
function div10(uint256 a, uint8 b) internal returns (uint256 result) {
for (uint8 i = 0; i < b; i++) {
a /= 10;
}
return a;
}
function max(uint256 a, uint256 b) internal returns (uint256 res) {
if (a >= b) return a;
return b;
}
}
/**
* @title DVIP Contract. DCAsset Membership Token contract.
*
* @author Ray Pulver, [email protected]
*/
contract DVIP is Token, StateTransferrable, TrustClient, Util {
uint256 public totalSupply;
mapping (address => bool) public frozenAccount;
mapping (address => address[]) public allowanceIndex;
mapping (address => mapping (address => bool)) public allowanceActive;
address[] public accountIndex;
mapping (address => bool) public accountActive;
address public oversightAddress;
uint256 public expiry;
uint256 public treasuryBalance;
bool public isActive;
mapping (address => uint256) public exportFee;
address[] public exportFeeIndex;
mapping (address => bool) exportFeeActive;
mapping (address => uint256) public importFee;
address[] public importFeeIndex;
mapping (address => bool) importFeeActive;
event FrozenFunds(address target, bool frozen);
event PrecisionSet(address indexed from, uint8 precision);
event TransactionsShutDown(address indexed from);
event FeeSetup(address indexed from, address indexed target, uint256 amount);
/**
* Constructor.
*
*/
function DVIP() {
isActive = true;
treasuryBalance = 0;
totalSupply = 0;
name = "DVIP";
symbol = "DVIP";
decimals = 6;
allowTransactions = true;
expiry = 1514764800; //1 jan 2018
}
/* --------------- modifiers --------------*/
/**
* Makes sure a method is only called by an overseer.
*/
modifier onlyOverseer {
assert(msg.sender == oversightAddress);
_
}
/* --------------- setter methods, only for the unlocked state --------------*/
/**
* Sets the oversight address (not the contract).
*
* @param addr The oversight contract address.
*/
function setOversight(address addr) onlyOwnerUnlocked setter {
oversightAddress = addr;
}
/**
* Sets the total supply
*
* @param total Total supply of the asset.
*/
function setTotalSupply(uint256 total) onlyOwnerUnlocked setter {
totalSupply = total;
}
/**
* Set the Token Standard the contract applies to.
*
* @param std the Standard.
*/
function setStandard(bytes32 std) onlyOwnerUnlocked setter {
standard = std;
}
/**
* Sets the name of the contraxt
*
* @param _name the name.
*/
function setName(bytes32 _name) onlyOwnerUnlocked setter {
name = _name;
}
/**
* Sets the symbol
*
* @param sym The Symbol
*/
function setSymbol(bytes32 sym) onlyOwnerUnlocked setter {
symbol = sym;
}
/**
* Sets the precision
*
* @param precision Amount of decimals
*/
function setPrecisionDirect(uint8 precision) onlyOwnerUnlocked {
decimals = precision;
PrecisionSet(msg.sender, precision);
}
/**
* Sets the balance of a certain account.
*
* @param addr Address of the account
* @param amount Amount of assets to set on the account
*/
function setAccountBalance(address addr, uint256 amount) onlyOwnerUnlocked {
balanceOf[addr] = amount;
activateAccount(addr);
}
/**
* Sets an allowance from a specific account to a specific account.
*
* @param from From-part of the allowance
* @param to To-part of the allowance
* @param amount Amount of the allowance
*/
function setAccountAllowance(address from, address to, uint256 amount) onlyOwnerUnlocked {
allowance[from][to] = amount;
activateAllowanceRecord(from, to);
}
/**
* Sets the treasure balance to a certain account.
*
* @param amount Amount of assets to pre-set in the treasury
*/
function setTreasuryBalance(uint256 amount) onlyOwnerUnlocked {
treasuryBalance = amount;
}
/**
* Sets a certain account on frozen/unfrozen
*
* @param addr Account that will be frozen/unfrozen
* @param frozen Boolean to freeze or unfreeze
*/
function setAccountFrozenStatus(address addr, bool frozen) onlyOwnerUnlocked {
activateAccount(addr);
frozenAccount[addr] = frozen;
}
/**
* Sets up a import fee for a certain address.
*
* @param addr Address that will require fee
* @param fee Amount of fee
*/
function setupImportFee(address addr, uint256 fee) onlyOwnerUnlocked {
importFee[addr] = fee;
activateImportFeeChargeRecord(addr);
FeeSetup(msg.sender, addr, fee);
}
/**
* Sets up a export fee for a certain address.
*
* @param addr Address that will require fee
* @param fee Amount of fee
*/
function setupExportFee(address addr, uint256 fee) onlyOwnerUnlocked {
exportFee[addr] = fee;
activateExportFeeChargeRecord(addr);
FeeSetup(msg.sender, addr, fee);
}
/* --------------- main token methods --------------*/
/**
* @notice Transfer `_amount` from `msg.sender.address()` to `_to`.
*
* @param _to Address that will receive.
* @param _amount Amount to be transferred.
*/
function transfer(address _to, uint256 _amount) returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[msg.sender]);
assert(balanceOf[msg.sender] >= _amount);
assert(balanceOf[_to] + _amount >= balanceOf[_to]);
activateAccount(msg.sender);
activateAccount(_to);
balanceOf[msg.sender] -= _amount;
if (_to == address(this)) treasuryBalance += _amount;
else balanceOf[_to] += _amount;
Transfer(msg.sender, _to, _amount);
return true;
}
/**
* @notice Transfer `_amount` from `_from` to `_to`.
*
* @param _from Origin address
* @param _to Address that will receive
* @param _amount Amount to be transferred.
* @return result of the method call
*/
function transferFrom(address _from, address _to, uint256 _amount) returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[msg.sender]);
assert(!frozenAccount[_from]);
assert(balanceOf[_from] >= _amount);
assert(balanceOf[_to] + _amount >= balanceOf[_to]);
assert(_amount <= allowance[_from][msg.sender]);
balanceOf[_from] -= _amount;
balanceOf[_to] += _amount;
allowance[_from][msg.sender] -= _amount;
activateAccount(_from);
activateAccount(_to);
activateAccount(msg.sender);
Transfer(_from, _to, _amount);
return true;
}
/**
* @notice Approve spender `_spender` to transfer `_amount` from `msg.sender.address()`
*
* @param _spender Address that receives the cheque
* @param _amount Amount on the cheque
* @param _extraData Consequential contract to be executed by spender in same transcation.
* @return result of the method call
*/
function approveAndCall(address _spender, uint256 _amount, bytes _extraData) returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[msg.sender]);
allowance[msg.sender][_spender] = _amount;
activateAccount(msg.sender);
activateAccount(_spender);
activateAllowanceRecord(msg.sender, _spender);
TokenRecipient spender = TokenRecipient(_spender);
spender.receiveApproval(msg.sender, _amount, this, _extraData);
Approval(msg.sender, _spender, _amount);
return true;
}
/**
* @notice Approve spender `_spender` to transfer `_amount` from `msg.sender.address()`
*
* @param _spender Address that receives the cheque
* @param _amount Amount on the cheque
* @return result of the method call
*/
function approve(address _spender, uint256 _amount) returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[msg.sender]);
allowance[msg.sender][_spender] = _amount;
activateAccount(msg.sender);
activateAccount(_spender);
activateAllowanceRecord(msg.sender, _spender);
Approval(msg.sender, _spender, _amount);
return true;
}
/* --------------- multisig admin methods --------------*/
/**
* @notice Sets the expiry time in milliseconds since 1970.
*
* @param ts milliseconds since 1970.
*
*/
function setExpiry(uint256 ts) multisig(sha3(msg.data)) {
expiry = ts;
}
/**
* @notice Mints `mintedAmount` new tokens to the hotwallet `hotWalletAddress`.
*
* @param mintedAmount Amount of new tokens to be minted.
*/
function mint(uint256 mintedAmount) multisig(sha3(msg.data)) {
treasuryBalance += mintedAmount;
totalSupply += mintedAmount;
}
/**
* @notice Destroys `destroyAmount` new tokens from the hotwallet `hotWalletAddress`
*
* @param destroyAmount Amount of new tokens to be minted.
*/
function destroyTokens(uint256 destroyAmount) multisig(sha3(msg.data)) {
assert(treasuryBalance >= destroyAmount);
treasuryBalance -= destroyAmount;
totalSupply -= destroyAmount;
}
/**
* @notice Transfers `amount` from the treasury to `to`
*
* @param to Address to transfer to
* @param amount Amount to transfer from treasury
*/
function transferFromTreasury(address to, uint256 amount) multisig(sha3(msg.data)) {
assert(treasuryBalance >= amount);
treasuryBalance -= amount;
balanceOf[to] += amount;
activateAccount(to);
}
/* --------------- fee setting administration methods --------------*/
/**
* @notice Sets an import fee of `fee` on address `addr`
*
* @param addr Address for which the fee is valid
* @param addr fee Fee
*
*/
function setImportFee(address addr, uint256 fee) multisig(sha3(msg.data)) {
uint256 max = 1;
max = pow10(1, decimals);
assert(fee <= max);
importFee[addr] = fee;
activateImportFeeChargeRecord(addr);
}
/**
* @notice Sets an export fee of `fee` on address `addr`
*
* @param addr Address for which the fee is valid
* @param addr fee Fee
*
*/
function setExportFee(address addr, uint256 fee) multisig(sha3(msg.data)) {
uint256 max = 1;
max = pow10(1, decimals);
assert(fee <= max);
exportFee[addr] = fee;
activateExportFeeChargeRecord(addr);
}
/* --------------- multisig emergency methods --------------*/
/**
* @notice Sets allow transactions to `allow`
*
* @param allow Allow or disallow transactions
*/
function voteAllowTransactions(bool allow) multisig(sha3(msg.data)) {
assert(allow != allowTransactions);
allowTransactions = allow;
}
/**
* @notice Destructs the contract and sends remaining `this.balance` Ether to `beneficiary`
*
* @param beneficiary Beneficiary of remaining Ether on contract
*/
function voteSuicide(address beneficiary) multisig(sha3(msg.data)) {
selfdestruct(beneficiary);
}
/**
* @notice Sets frozen to `freeze` for account `target`
*
* @param addr Address to be frozen/unfrozen
* @param freeze Freeze/unfreeze account
*/
function freezeAccount(address addr, bool freeze) multisig(sha3(msg.data)) {
frozenAccount[addr] = freeze;
activateAccount(addr);
}
/**
* @notice Seizes `seizeAmount` of tokens from `address` and transfers it to hotwallet
*
* @param addr Adress to seize tokens from
* @param amount Amount of tokens to seize
*/
function seizeTokens(address addr, uint256 amount) multisig(sha3(msg.data)) {
assert(balanceOf[addr] >= amount);
assert(frozenAccount[addr]);
activateAccount(addr);
balanceOf[addr] -= amount;
treasuryBalance += amount;
}
/* --------------- fee calculation method ---------------- */
/**
* @notice 'Returns the fee for a transfer from `from` to `to` on an amount `amount`.
*
* Fee's consist of a possible
* - import fee on transfers to an address
* - export fee on transfers from an address
* DVIP ownership on an address
* - reduces fee on a transfer from this address to an import fee-ed address
* - reduces the fee on a transfer to this address from an export fee-ed address
* DVIP discount does not work for addresses that have an import fee or export fee set up against them.
*
* DVIP discount goes up to 100%
*
* @param from From address
* @param to To address
* @param amount Amount for which fee needs to be calculated.
*
*/
function feeFor(address from, address to, uint256 amount) constant external returns (uint256 value) {
uint256 fee = exportFee[from] + importFee[to];
if (fee == 0) return 0;
uint256 amountHeld;
bool discounted = true;
uint256 oneDVIPUnit;
if (exportFee[from] == 0 && balanceOf[from] != 0 && now < expiry) {
amountHeld = balanceOf[from];
} else if (importFee[to] == 0 && balanceOf[to] != 0 && now < expiry) {
amountHeld = balanceOf[to];
} else discounted = false;
if (discounted) {
oneDVIPUnit = pow10(1, decimals);
if (amountHeld > oneDVIPUnit) amountHeld = oneDVIPUnit;
uint256 remaining = oneDVIPUnit - amountHeld;
return div10(amount*fee*remaining, decimals*2);
}
return div10(amount*fee, decimals);
}
/* --------------- overseer methods for emergency --------------*/
/**
* @notice Shuts down all transaction and approval options on the asset contract
*/
function shutdownTransactions() onlyOverseer {
allowTransactions = false;
TransactionsShutDown(msg.sender);
}
/* --------------- helper methods for siphoning --------------*/
function extractAccountAllowanceRecordLength(address addr) constant returns (uint256 len) {
return allowanceIndex[addr].length;
}
function extractAccountLength() constant returns (uint256 length) {
return accountIndex.length;
}
/* --------------- private methods --------------*/
function activateAccount(address addr) internal {
if (!accountActive[addr]) {
accountActive[addr] = true;
accountIndex.push(addr);
}
}
function activateAllowanceRecord(address from, address to) internal {
if (!allowanceActive[from][to]) {
allowanceActive[from][to] = true;
allowanceIndex[from].push(to);
}
}
function activateExportFeeChargeRecord(address addr) internal {
if (!exportFeeActive[addr]) {
exportFeeActive[addr] = true;
exportFeeIndex.push(addr);
}
}
function activateImportFeeChargeRecord(address addr) internal {
if (!importFeeActive[addr]) {
importFeeActive[addr] = true;
importFeeIndex.push(addr);
}
}
function extractImportFeeChargeLength() returns (uint256 length) {
return importFeeIndex.length;
}
function extractExportFeeChargeLength() returns (uint256 length) {
return exportFeeIndex.length;
}
}
/**
* @title DCAssetBackend Contract
*
* @author Ray Pulver, [email protected]
*/
contract DCAssetBackend is Owned, Precision, StateTransferrable, TrustClient, Util {
bytes32 public standard = 'Token 0.1';
bytes32 public name;
bytes32 public symbol;
bool public allowTransactions;
event Approval(address indexed from, address indexed spender, uint256 amount);
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
uint256 public totalSupply;
address public hotWalletAddress;
address public assetAddress;
address public oversightAddress;
address public membershipAddress;
mapping (address => bool) public frozenAccount;
mapping (address => address[]) public allowanceIndex;
mapping (address => mapping (address => bool)) public allowanceActive;
address[] public accountIndex;
mapping (address => bool) public accountActive;
bool public isActive;
uint256 public treasuryBalance;
mapping (address => uint256) public feeCharge;
address[] public feeChargeIndex;
mapping (address => bool) feeActive;
event FrozenFunds(address target, bool frozen);
event PrecisionSet(address indexed from, uint8 precision);
event TransactionsShutDown(address indexed from);
event FeeSetup(address indexed from, address indexed target, uint256 amount);
/**
* Constructor.
*
* @param tokenName Name of the Token
* @param tokenSymbol The Token Symbol
*/
function DCAssetBackend(bytes32 tokenSymbol, bytes32 tokenName) {
isActive = true;
name = tokenName;
symbol = tokenSymbol;
decimals = 6;
allowTransactions = true;
}
/* --------------- modifiers --------------*/
/**
* Makes sure a method is only called by an overseer.
*/
modifier onlyOverseer {
assert(msg.sender == oversightAddress);
_
}
/**
* Make sure only the front end Asset can call the transfer methods
*/
modifier onlyAsset {
assert(msg.sender == assetAddress);
_
}
/* --------------- setter methods, only for the unlocked state --------------*/
/**
* Sets the hot wallet contract address
*
* @param addr Address of the Hotwallet
*/
function setHotWallet(address addr) onlyOwnerUnlocked setter {
hotWalletAddress = addr;
}
/**
* Sets the token facade contract address
*
* @param addr Address of the front-end Asset
*/
function setAsset(address addr) onlyOwnerUnlocked setter {
assetAddress = addr;
}
/**
* Sets the membership contract address
*
* @param addr Address of the membership contract
*/
function setMembership(address addr) onlyOwnerUnlocked setter {
membershipAddress = addr;
}
/**
* Sets the oversight address (not the contract).
*
* @param addr The oversight contract address.
*/
function setOversight(address addr) onlyOwnerUnlocked setter {
oversightAddress = addr;
}
/**
* Sets the total supply
*
* @param total Total supply of the asset.
*/
function setTotalSupply(uint256 total) onlyOwnerUnlocked setter {
totalSupply = total;
}
/**
* Set the Token Standard the contract applies to.
*
* @param std the Standard.
*/
function setStandard(bytes32 std) onlyOwnerUnlocked setter {
standard = std;
}
/**
* Sets the name of the contraxt
*
* @param _name the name.
*/
function setName(bytes32 _name) onlyOwnerUnlocked setter {
name = _name;
}
/**
* Sets the symbol
*
* @param sym The Symbol
*/
function setSymbol(bytes32 sym) onlyOwnerUnlocked setter {
symbol = sym;
}
/**
* Sets the precision
*
* @param precision Amount of decimals
*/
function setPrecisionDirect(uint8 precision) onlyOwnerUnlocked {
decimals = precision;
PrecisionSet(msg.sender, precision);
}
/**
* Sets the balance of a certain account.
*
* @param addr Address of the account
* @param amount Amount of assets to set on the account
*/
function setAccountBalance(address addr, uint256 amount) onlyOwnerUnlocked {
balanceOf[addr] = amount;
activateAccount(addr);
}
/**
* Sets an allowance from a specific account to a specific account.
*
* @param from From-part of the allowance
* @param to To-part of the allowance
* @param amount Amount of the allowance
*/
function setAccountAllowance(address from, address to, uint256 amount) onlyOwnerUnlocked {
allowance[from][to] = amount;
activateAllowanceRecord(from, to);
}
/**
* Sets the treasure balance to a certain account.
*
* @param amount Amount of assets to pre-set in the treasury
*/
function setTreasuryBalance(uint256 amount) onlyOwnerUnlocked {
treasuryBalance = amount;
}
/**
* Sets a certain account on frozen/unfrozen
*
* @param addr Account that will be frozen/unfrozen
* @param frozen Boolean to freeze or unfreeze
*/
function setAccountFrozenStatus(address addr, bool frozen) onlyOwnerUnlocked {
activateAccount(addr);
frozenAccount[addr] = frozen;
}
/* --------------- main token methods --------------*/
/**
* @notice Transfer `_amount` from `_caller` to `_to`.
*
* @param _caller Origin address
* @param _to Address that will receive.
* @param _amount Amount to be transferred.
*/
function transfer(address _caller, address _to, uint256 _amount) onlyAsset returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[_caller]);
assert(balanceOf[_caller] >= _amount);
assert(balanceOf[_to] + _amount >= balanceOf[_to]);
activateAccount(_caller);
activateAccount(_to);
balanceOf[_caller] -= _amount;
if (_to == address(this)) treasuryBalance += _amount;
else {
uint256 fee = feeFor(_caller, _to, _amount);
balanceOf[_to] += _amount - fee;
treasuryBalance += fee;
}
Transfer(_caller, _to, _amount);
return true;
}
/**
* @notice Transfer `_amount` from `_from` to `_to`, invoked by `_caller`.
*
* @param _caller Invoker of the call (owner of the allowance)
* @param _from Origin address
* @param _to Address that will receive
* @param _amount Amount to be transferred.
* @return result of the method call
*/
function transferFrom(address _caller, address _from, address _to, uint256 _amount) onlyAsset returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[_caller]);
assert(!frozenAccount[_from]);
assert(balanceOf[_from] >= _amount);
assert(balanceOf[_to] + _amount >= balanceOf[_to]);
assert(_amount <= allowance[_from][_caller]);
balanceOf[_from] -= _amount;
uint256 fee = feeFor(_from, _to, _amount);
balanceOf[_to] += _amount - fee;
treasuryBalance += fee;
allowance[_from][_caller] -= _amount;
activateAccount(_from);
activateAccount(_to);
activateAccount(_caller);
Transfer(_from, _to, _amount);
return true;
}
/**
* @notice Approve Approves spender `_spender` to transfer `_amount` from `_caller`
*
* @param _caller Address that grants the allowance
* @param _spender Address that receives the cheque
* @param _amount Amount on the cheque
* @param _extraData Consequential contract to be executed by spender in same transcation.
* @return result of the method call
*/
function approveAndCall(address _caller, address _spender, uint256 _amount, bytes _extraData) onlyAsset returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[_caller]);
allowance[_caller][_spender] = _amount;
activateAccount(_caller);
activateAccount(_spender);
activateAllowanceRecord(_caller, _spender);
TokenRecipient spender = TokenRecipient(_spender);
assert(Relay(assetAddress).relayReceiveApproval(_caller, _spender, _amount, _extraData));
Approval(_caller, _spender, _amount);
return true;
}
/**
* @notice Approve Approves spender `_spender` to transfer `_amount` from `_caller`
*
* @param _caller Address that grants the allowance
* @param _spender Address that receives the cheque
* @param _amount Amount on the cheque
* @return result of the method call
*/
function approve(address _caller, address _spender, uint256 _amount) onlyAsset returns (bool success) {
assert(allowTransactions);
assert(!frozenAccount[_caller]);
allowance[_caller][_spender] = _amount;
activateAccount(_caller);
activateAccount(_spender);
activateAllowanceRecord(_caller, _spender);
Approval(_caller, _spender, _amount);
return true;
}
/* --------------- multisig admin methods --------------*/
/**
* @notice Mints `mintedAmount` new tokens to the hotwallet `hotWalletAddress`.
*
* @param mintedAmount Amount of new tokens to be minted.
*/
function mint(uint256 mintedAmount) multisig(sha3(msg.data)) {
activateAccount(hotWalletAddress);
balanceOf[hotWalletAddress] += mintedAmount;
totalSupply += mintedAmount;
}
/**
* @notice Destroys `destroyAmount` new tokens from the hotwallet `hotWalletAddress`
*
* @param destroyAmount Amount of new tokens to be minted.
*/
function destroyTokens(uint256 destroyAmount) multisig(sha3(msg.data)) {
assert(balanceOf[hotWalletAddress] >= destroyAmount);
activateAccount(hotWalletAddress);
balanceOf[hotWalletAddress] -= destroyAmount;
totalSupply -= destroyAmount;
}
/**
* @notice Transfers `amount` from the treasury to `to`
*
* @param to Address to transfer to
* @param amount Amount to transfer from treasury
*/
function transferFromTreasury(address to, uint256 amount) multisig(sha3(msg.data)) {
assert(treasuryBalance >= amount);
treasuryBalance -= amount;
balanceOf[to] += amount;
activateAccount(to);
}
/* --------------- multisig emergency methods --------------*/
/**
* @notice Sets allow transactions to `allow`
*
* @param allow Allow or disallow transactions
*/
function voteAllowTransactions(bool allow) multisig(sha3(msg.data)) {
if (allow == allowTransactions) throw;
allowTransactions = allow;
}
/**
* @notice Destructs the contract and sends remaining `this.balance` Ether to `beneficiary`
*
* @param beneficiary Beneficiary of remaining Ether on contract
*/
function voteSuicide(address beneficiary) multisig(sha3(msg.data)) {
selfdestruct(beneficiary);
}
/**
* @notice Sets frozen to `freeze` for account `target`
*
* @param addr Address to be frozen/unfrozen
* @param freeze Freeze/unfreeze account
*/
function freezeAccount(address addr, bool freeze) multisig(sha3(msg.data)) {
frozenAccount[addr] = freeze;
activateAccount(addr);
}
/**
* @notice Seizes `seizeAmount` of tokens from `address` and transfers it to hotwallet
*
* @param addr Adress to seize tokens from
* @param amount Amount of tokens to seize
*/
function seizeTokens(address addr, uint256 amount) multisig(sha3(msg.data)) {
assert(balanceOf[addr] >= amount);
assert(frozenAccount[addr]);
activateAccount(addr);
balanceOf[addr] -= amount;
balanceOf[hotWalletAddress] += amount;
}
/* --------------- overseer methods for emergency --------------*/
/**
* @notice Shuts down all transaction and approval options on the asset contract
*/
function shutdownTransactions() onlyOverseer {
allowTransactions = false;
TransactionsShutDown(msg.sender);
}
/* --------------- helper methods for siphoning --------------*/
function extractAccountAllowanceRecordLength(address addr) returns (uint256 len) {
return allowanceIndex[addr].length;
}
function extractAccountLength() returns (uint256 length) {
return accountIndex.length;
}
/* --------------- private methods --------------*/
function activateAccount(address addr) internal {
if (!accountActive[addr]) {
accountActive[addr] = true;
accountIndex.push(addr);
}
}
function activateAllowanceRecord(address from, address to) internal {
if (!allowanceActive[from][to]) {
allowanceActive[from][to] = true;
allowanceIndex[from].push(to);
}
}
function feeFor(address a, address b, uint256 amount) returns (uint256 value) {
if (membershipAddress == address(0x0)) return 0;
return DVIP(membershipAddress).feeFor(a, b, amount);
}
}
/**
* @title DCAssetFacade, Facade for the underlying back-end dcasset token contract. Allow to be updated later.
*
* @author P.S.D. Reitsma, [email protected]
*
*/
contract DCAsset is TokenBase, StateTransferrable, TrustClient, Relay {
address public backendContract;
/**
* Constructor
*
*
*/
function DCAsset(address _backendContract) {
backendContract = _backendContract;
}
function standard() constant returns (bytes32 std) {
return DCAssetBackend(backendContract).standard();
}
function name() constant returns (bytes32 nm) {
return DCAssetBackend(backendContract).name();
}
function symbol() constant returns (bytes32 sym) {
return DCAssetBackend(backendContract).symbol();
}
function decimals() constant returns (uint8 precision) {
return DCAssetBackend(backendContract).decimals();
}
function allowance(address from, address to) constant returns (uint256 res) {
return DCAssetBackend(backendContract).allowance(from, to);
}
/* --------------- multisig admin methods --------------*/
/**
* @notice Sets the backend contract to `_backendContract`. Can only be switched by multisig.
*
* @param _backendContract Address of the underlying token contract.
*/
function setBackend(address _backendContract) multisig(sha3(msg.data)) {
backendContract = _backendContract;
}
/* --------------- main token methods --------------*/
/**
* @notice Returns the balance of `_address`.
*
* @param _address The address of the balance.
*/
function balanceOf(address _address) constant returns (uint256 balance) {
return DCAssetBackend(backendContract).balanceOf(_address);
}
/**
* @notice Returns the total supply of the token
*
*/
function totalSupply() constant returns (uint256 balance) {
return DCAssetBackend(backendContract).totalSupply();
}
/**
* @notice Transfer `_amount` to `_to`.
*
* @param _to Address that will receive.
* @param _amount Amount to be transferred.
*/
function transfer(address _to, uint256 _amount) returns (bool success) {
if (!DCAssetBackend(backendContract).transfer(msg.sender, _to, _amount)) throw;
Transfer(msg.sender, _to, _amount);
return true;
}
/**
* @notice Approve Approves spender `_spender` to transfer `_amount`.
*
* @param _spender Address that receives the cheque
* @param _amount Amount on the cheque
* @param _extraData Consequential contract to be executed by spender in same transcation.
* @return result of the method call
*/
function approveAndCall(address _spender, uint256 _amount, bytes _extraData) returns (bool success) {
if (!DCAssetBackend(backendContract).approveAndCall(msg.sender, _spender, _amount, _extraData)) throw;
Approval(msg.sender, _spender, _amount);
return true;
}
/**
* @notice Approve Approves spender `_spender` to transfer `_amount`.
*
* @param _spender Address that receives the cheque
* @param _amount Amount on the cheque
* @return result of the method call
*/
function approve(address _spender, uint256 _amount) returns (bool success) {
if (!DCAssetBackend(backendContract).approve(msg.sender, _spender, _amount)) throw;
Approval(msg.sender, _spender, _amount);
return true;
}
/**
* @notice Transfer `_amount` from `_from` to `_to`.
*
* @param _from Origin address
* @param _to Address that will receive
* @param _amount Amount to be transferred.
* @return result of the method call
*/
function transferFrom(address _from, address _to, uint256 _amount) returns (bool success) {
if (!DCAssetBackend(backendContract).transferFrom(msg.sender, _from, _to, _amount)) throw;
Transfer(_from, _to, _amount);
return true;
}
/**
* @notice Returns fee for transferral of `_amount` from `_from` to `_to`.
*
* @param _from Origin address
* @param _to Address that will receive
* @param _amount Amount to be transferred.
* @return height of the fee
*/
function feeFor(address _from, address _to, uint256 _amount) returns (uint256 amount) {
return DCAssetBackend(backendContract).feeFor(_from, _to, _amount);
}
/* --------------- to be called by backend --------------*/
function relayReceiveApproval(address _caller, address _spender, uint256 _amount, bytes _extraData) returns (bool success) {
assert(msg.sender == backendContract);
TokenRecipient spender = TokenRecipient(_spender);
spender.receiveApproval(_caller, _amount, this, _extraData);
return true;
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000815a46107e5ee2291a76274dc879ce947a3f0850
-----Decoded View---------------
Arg [0] : _backendContract (address): 0x815a46107e5Ee2291A76274DC879cE947a3F0850
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000815a46107e5ee2291a76274dc879ce947a3f0850
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