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Latest 6 from a total of 6 transactions
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Halt | 4765768 | 2573 days ago | IN | 0 ETH | 0.00109644 | ||||
Buy With KYC Dat... | 4765450 | 2573 days ago | IN | 1,690 ETH | 0.0091615 | ||||
Buy With KYC Dat... | 4759634 | 2574 days ago | IN | 0.01 ETH | 0.00674509 | ||||
Set Early Parici... | 4759627 | 2574 days ago | IN | 0 ETH | 0.00156135 | ||||
Set Signer Addre... | 4759625 | 2574 days ago | IN | 0 ETH | 0.001512 | ||||
Set Finalize Age... | 4759625 | 2574 days ago | IN | 0 ETH | 0.00153773 |
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This contract contains unverified libraries: SafeMathLib, BytesDeserializer
This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
KYCCrowdsale
Compiler Version
v0.4.18+commit.9cf6e910
Optimization Enabled:
Yes with 500 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2017-12-19 */ /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner { require(newOwner != address(0)); owner = newOwner; } } /* * Haltable * * Abstract contract that allows children to implement an * emergency stop mechanism. Differs from Pausable by causing a throw when in halt mode. * * * Originally envisioned in FirstBlood ICO contract. */ contract Haltable is Ownable { bool public halted; modifier stopInEmergency { if (halted) throw; _; } modifier stopNonOwnersInEmergency { if (halted && msg.sender != owner) throw; _; } modifier onlyInEmergency { if (!halted) throw; _; } // called by the owner on emergency, triggers stopped state function halt() external onlyOwner { halted = true; } // called by the owner on end of emergency, returns to normal state function unhalt() external onlyOwner onlyInEmergency { halted = false; } } /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * Safe unsigned safe math. * * https://blog.aragon.one/library-driven-development-in-solidity-2bebcaf88736#.750gwtwli * * Originally from https://raw.githubusercontent.com/AragonOne/zeppelin-solidity/master/contracts/SafeMathLib.sol * * Maintained here until merged to mainline zeppelin-solidity. * */ library SafeMathLib { function times(uint a, uint b) returns (uint) { uint c = a * b; assert(a == 0 || c / a == b); return c; } function minus(uint a, uint b) returns (uint) { assert(b <= a); return a - b; } function plus(uint a, uint b) returns (uint) { uint c = a + b; assert(c>=a); return c; } } /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) constant returns (uint256); function transfer(address to, uint256 value) returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) constant returns (uint256); function transferFrom(address from, address to, uint256 value) returns (bool); function approve(address spender, uint256 value) returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } /** * A token that defines fractional units as decimals. */ contract FractionalERC20 is ERC20 { uint public decimals; } /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * Interface for defining crowdsale pricing. */ contract PricingStrategy { /** Interface declaration. */ function isPricingStrategy() public constant returns (bool) { return true; } /** Self check if all references are correctly set. * * Checks that pricing strategy matches crowdsale parameters. */ function isSane(address crowdsale) public constant returns (bool) { return true; } /** * @dev Pricing tells if this is a presale purchase or not. @param purchaser Address of the purchaser @return False by default, true if a presale purchaser */ function isPresalePurchase(address purchaser) public constant returns (bool) { return false; } /** * When somebody tries to buy tokens for X eth, calculate how many tokens they get. * * * @param value - What is the value of the transaction send in as wei * @param tokensSold - how much tokens have been sold this far * @param weiRaised - how much money has been raised this far in the main token sale - this number excludes presale * @param msgSender - who is the investor of this transaction * @param decimals - how many decimal units the token has * @return Amount of tokens the investor receives */ function calculatePrice(uint value, uint weiRaised, uint tokensSold, address msgSender, uint decimals) public constant returns (uint tokenAmount); } /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * Finalize agent defines what happens at the end of succeseful crowdsale. * * - Allocate tokens for founders, bounties and community * - Make tokens transferable * - etc. */ contract FinalizeAgent { function isFinalizeAgent() public constant returns(bool) { return true; } /** Return true if we can run finalizeCrowdsale() properly. * * This is a safety check function that doesn't allow crowdsale to begin * unless the finalizer has been set up properly. */ function isSane() public constant returns (bool); /** Called once by crowdsale finalize() if the sale was success. */ function finalizeCrowdsale(); } /** * Crowdsale state machine without buy functionality. * * Implements basic state machine logic, but leaves out all buy functions, * so that subclasses can implement their own buying logic. * * * For the default buy() implementation see Crowdsale.sol. */ contract CrowdsaleBase is Haltable { /* Max investment count when we are still allowed to change the multisig address */ uint public MAX_INVESTMENTS_BEFORE_MULTISIG_CHANGE = 5; using SafeMathLib for uint; /* The token we are selling */ FractionalERC20 public token; /* How we are going to price our offering */ PricingStrategy public pricingStrategy; /* Post-success callback */ FinalizeAgent public finalizeAgent; /* tokens will be transfered from this address */ address public multisigWallet; /* if the funding goal is not reached, investors may withdraw their funds */ uint public minimumFundingGoal; /* the UNIX timestamp start date of the crowdsale */ uint public startsAt; /* the UNIX timestamp end date of the crowdsale */ uint public endsAt; /* the number of tokens already sold through this contract*/ uint public tokensSold = 0; /* How many wei of funding we have raised */ uint public weiRaised = 0; /* Calculate incoming funds from presale contracts and addresses */ uint public presaleWeiRaised = 0; /* How many distinct addresses have invested */ uint public investorCount = 0; /* How much wei we have returned back to the contract after a failed crowdfund. */ uint public loadedRefund = 0; /* How much wei we have given back to investors.*/ uint public weiRefunded = 0; /* Has this crowdsale been finalized */ bool public finalized; /** How much ETH each address has invested to this crowdsale */ mapping (address => uint256) public investedAmountOf; /** How much tokens this crowdsale has credited for each investor address */ mapping (address => uint256) public tokenAmountOf; /** Addresses that are allowed to invest even before ICO offical opens. For testing, for ICO partners, etc. */ mapping (address => bool) public earlyParticipantWhitelist; /** This is for manul testing for the interaction from owner wallet. You can set it to any value and inspect this in blockchain explorer to see that crowdsale interaction works. */ uint public ownerTestValue; /** State machine * * - Preparing: All contract initialization calls and variables have not been set yet * - Prefunding: We have not passed start time yet * - Funding: Active crowdsale * - Success: Minimum funding goal reached * - Failure: Minimum funding goal not reached before ending time * - Finalized: The finalized has been called and succesfully executed * - Refunding: Refunds are loaded on the contract for reclaim. */ enum State{Unknown, Preparing, PreFunding, Funding, Success, Failure, Finalized, Refunding} // A new investment was made event Invested(address investor, uint weiAmount, uint tokenAmount, uint128 customerId); // Refund was processed for a contributor event Refund(address investor, uint weiAmount); // The rules were changed what kind of investments we accept event InvestmentPolicyChanged(bool newRequireCustomerId, bool newRequiredSignedAddress, address newSignerAddress); // Address early participation whitelist status changed event Whitelisted(address addr, bool status); // Crowdsale end time has been changed event EndsAtChanged(uint newEndsAt); State public testState; function CrowdsaleBase(address _token, PricingStrategy _pricingStrategy, address _multisigWallet, uint _start, uint _end, uint _minimumFundingGoal) { owner = msg.sender; token = FractionalERC20(_token); setPricingStrategy(_pricingStrategy); multisigWallet = _multisigWallet; if(multisigWallet == 0) { throw; } if(_start == 0) { throw; } startsAt = _start; if(_end == 0) { throw; } endsAt = _end; // Don't mess the dates if(startsAt >= endsAt) { throw; } // Minimum funding goal can be zero minimumFundingGoal = _minimumFundingGoal; } /** * Don't expect to just send in money and get tokens. */ function() payable { throw; } /** * Make an investment. * * Crowdsale must be running for one to invest. * We must have not pressed the emergency brake. * * @param receiver The Ethereum address who receives the tokens * @param customerId (optional) UUID v4 to track the successful payments on the server side' * * @return tokenAmount How mony tokens were bought */ function investInternal(address receiver, uint128 customerId) stopInEmergency internal returns(uint tokensBought) { // Determine if it's a good time to accept investment from this participant if(getState() == State.PreFunding) { // Are we whitelisted for early deposit if(!earlyParticipantWhitelist[receiver]) { throw; } } else if(getState() == State.Funding) { // Retail participants can only come in when the crowdsale is running // pass } else { // Unwanted state throw; } uint weiAmount = msg.value; // Account presale sales separately, so that they do not count against pricing tranches uint tokenAmount = pricingStrategy.calculatePrice(weiAmount, weiRaised - presaleWeiRaised, tokensSold, msg.sender, token.decimals()); // Dust transaction require(tokenAmount != 0); if(investedAmountOf[receiver] == 0) { // A new investor investorCount++; } // Update investor investedAmountOf[receiver] = investedAmountOf[receiver].plus(weiAmount); tokenAmountOf[receiver] = tokenAmountOf[receiver].plus(tokenAmount); // Update totals weiRaised = weiRaised.plus(weiAmount); tokensSold = tokensSold.plus(tokenAmount); if(pricingStrategy.isPresalePurchase(receiver)) { presaleWeiRaised = presaleWeiRaised.plus(weiAmount); } // Check that we did not bust the cap require(!isBreakingCap(weiAmount, tokenAmount, weiRaised, tokensSold)); assignTokens(receiver, tokenAmount); // Pocket the money, or fail the crowdsale if we for some reason cannot send the money to our multisig if(!multisigWallet.send(weiAmount)) throw; // Tell us invest was success Invested(receiver, weiAmount, tokenAmount, customerId); return tokenAmount; } /** * Finalize a succcesful crowdsale. * * The owner can triggre a call the contract that provides post-crowdsale actions, like releasing the tokens. */ function finalize() public inState(State.Success) onlyOwner stopInEmergency { // Already finalized if(finalized) { throw; } // Finalizing is optional. We only call it if we are given a finalizing agent. if(address(finalizeAgent) != 0) { finalizeAgent.finalizeCrowdsale(); } finalized = true; } /** * Allow to (re)set finalize agent. * * Design choice: no state restrictions on setting this, so that we can fix fat finger mistakes. */ function setFinalizeAgent(FinalizeAgent addr) onlyOwner { finalizeAgent = addr; // Don't allow setting bad agent if(!finalizeAgent.isFinalizeAgent()) { throw; } } /** * Allow crowdsale owner to close early or extend the crowdsale. * * This is useful e.g. for a manual soft cap implementation: * - after X amount is reached determine manual closing * * This may put the crowdsale to an invalid state, * but we trust owners know what they are doing. * */ function setEndsAt(uint time) onlyOwner { if(now > time) { throw; // Don't change past } if(startsAt > time) { throw; // Prevent human mistakes } endsAt = time; EndsAtChanged(endsAt); } /** * Allow to (re)set pricing strategy. * * Design choice: no state restrictions on the set, so that we can fix fat finger mistakes. */ function setPricingStrategy(PricingStrategy _pricingStrategy) onlyOwner { pricingStrategy = _pricingStrategy; // Don't allow setting bad agent if(!pricingStrategy.isPricingStrategy()) { throw; } } /** * Allow to change the team multisig address in the case of emergency. * * This allows to save a deployed crowdsale wallet in the case the crowdsale has not yet begun * (we have done only few test transactions). After the crowdsale is going * then multisig address stays locked for the safety reasons. */ function setMultisig(address addr) public onlyOwner { // Change if(investorCount > MAX_INVESTMENTS_BEFORE_MULTISIG_CHANGE) { throw; } multisigWallet = addr; } /** * Allow load refunds back on the contract for the refunding. * * The team can transfer the funds back on the smart contract in the case the minimum goal was not reached.. */ function loadRefund() public payable inState(State.Failure) { if(msg.value == 0) throw; loadedRefund = loadedRefund.plus(msg.value); } /** * Investors can claim refund. * * Note that any refunds from proxy buyers should be handled separately, * and not through this contract. */ function refund() public inState(State.Refunding) { uint256 weiValue = investedAmountOf[msg.sender]; if (weiValue == 0) throw; investedAmountOf[msg.sender] = 0; weiRefunded = weiRefunded.plus(weiValue); Refund(msg.sender, weiValue); if (!msg.sender.send(weiValue)) throw; } /** * @return true if the crowdsale has raised enough money to be a successful. */ function isMinimumGoalReached() public constant returns (bool reached) { return weiRaised >= minimumFundingGoal; } /** * Check if the contract relationship looks good. */ function isFinalizerSane() public constant returns (bool sane) { return finalizeAgent.isSane(); } /** * Check if the contract relationship looks good. */ function isPricingSane() public constant returns (bool sane) { return pricingStrategy.isSane(address(this)); } /** * Crowdfund state machine management. * * We make it a function and do not assign the result to a variable, so there is no chance of the variable being stale. */ function getState() public constant returns (State) { if(finalized) return State.Finalized; else if (address(finalizeAgent) == 0) return State.Preparing; else if (!finalizeAgent.isSane()) return State.Preparing; else if (!pricingStrategy.isSane(address(this))) return State.Preparing; else if (block.timestamp < startsAt) return State.PreFunding; else if (block.timestamp <= endsAt && !isCrowdsaleFull()) return State.Funding; else if (isMinimumGoalReached()) return State.Success; else if (!isMinimumGoalReached() && weiRaised > 0 && loadedRefund >= weiRaised) return State.Refunding; else return State.Failure; } /** This is for manual testing of multisig wallet interaction */ function setOwnerTestValue(uint val) onlyOwner { ownerTestValue = val; } /** * Allow addresses to do early participation. * * TODO: Fix spelling error in the name */ function setEarlyParicipantWhitelist(address addr, bool status) onlyOwner { earlyParticipantWhitelist[addr] = status; Whitelisted(addr, status); } /** Interface marker. */ function isCrowdsale() public constant returns (bool) { return true; } // // Modifiers // /** Modified allowing execution only if the crowdsale is currently running. */ modifier inState(State state) { if(getState() != state) throw; _; } // // Abstract functions // /** * Check if the current invested breaks our cap rules. * * * The child contract must define their own cap setting rules. * We allow a lot of flexibility through different capping strategies (ETH, token count) * Called from invest(). * * @param weiAmount The amount of wei the investor tries to invest in the current transaction * @param tokenAmount The amount of tokens we try to give to the investor in the current transaction * @param weiRaisedTotal What would be our total raised balance after this transaction * @param tokensSoldTotal What would be our total sold tokens count after this transaction * * @return true if taking this investment would break our cap rules */ function isBreakingCap(uint weiAmount, uint tokenAmount, uint weiRaisedTotal, uint tokensSoldTotal) constant returns (bool limitBroken); /** * Check if the current crowdsale is full and we can no longer sell any tokens. */ function isCrowdsaleFull() public constant returns (bool); /** * Create new tokens or transfer issued tokens to the investor depending on the cap model. */ function assignTokens(address receiver, uint tokenAmount) internal; } /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * A mixin that is selling tokens from a preallocated pool * * - Tokens have precreated supply "premined" * * - Token owner must transfer sellable tokens to the crowdsale contract using ERC20.approve() * * - The mixin does not implement buy entry point. * */ contract AllocatedCrowdsaleMixin is CrowdsaleBase { /* The party who holds the full token pool and has approve()'ed tokens for this crowdsale */ address public beneficiary; /** * @param _beneficiary The account who has performed approve() to allocate tokens for the token sale. * */ function AllocatedCrowdsaleMixin(address _beneficiary) { beneficiary = _beneficiary; } /** * Called from invest() to confirm if the curret investment does not break our cap rule. */ function isBreakingCap(uint weiAmount, uint tokenAmount, uint weiRaisedTotal, uint tokensSoldTotal) constant returns (bool limitBroken) { if(tokenAmount > getTokensLeft()) { return true; } else { return false; } } /** * We are sold out when our approve pool becomes empty. */ function isCrowdsaleFull() public constant returns (bool) { return getTokensLeft() == 0; } /** * Get the amount of unsold tokens allocated to this contract; */ function getTokensLeft() public constant returns (uint) { return token.allowance(owner, this); } /** * Transfer tokens from approve() pool to the buyer. * * Use approve() given to this crowdsale to distribute the tokens. */ function assignTokens(address receiver, uint tokenAmount) internal { if(!token.transferFrom(beneficiary, receiver, tokenAmount)) throw; } } /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ /** * Deserialize bytes payloads. * * Values are in big-endian byte order. * */ library BytesDeserializer { /** * Extract 256-bit worth of data from the bytes stream. */ function slice32(bytes b, uint offset) constant returns (bytes32) { bytes32 out; for (uint i = 0; i < 32; i++) { out |= bytes32(b[offset + i] & 0xFF) >> (i * 8); } return out; } /** * Extract Ethereum address worth of data from the bytes stream. */ function sliceAddress(bytes b, uint offset) constant returns (address) { bytes32 out; for (uint i = 0; i < 20; i++) { out |= bytes32(b[offset + i] & 0xFF) >> ((i+12) * 8); } return address(uint(out)); } /** * Extract 128-bit worth of data from the bytes stream. */ function slice16(bytes b, uint offset) constant returns (bytes16) { bytes16 out; for (uint i = 0; i < 16; i++) { out |= bytes16(b[offset + i] & 0xFF) >> (i * 8); } return out; } /** * Extract 32-bit worth of data from the bytes stream. */ function slice4(bytes b, uint offset) constant returns (bytes4) { bytes4 out; for (uint i = 0; i < 4; i++) { out |= bytes4(b[offset + i] & 0xFF) >> (i * 8); } return out; } /** * Extract 16-bit worth of data from the bytes stream. */ function slice2(bytes b, uint offset) constant returns (bytes2) { bytes2 out; for (uint i = 0; i < 2; i++) { out |= bytes2(b[offset + i] & 0xFF) >> (i * 8); } return out; } } /** * A mix-in contract to decode different AML payloads. * * @notice This should be a library, but for the complexity and toolchain fragility risks involving of linking library inside library, we put this as a mix-in. */ contract KYCPayloadDeserializer { using BytesDeserializer for bytes; // The bytes payload set on the server side // total 56 bytes struct KYCPayload { /** Customer whitelisted address where the deposit can come from */ address whitelistedAddress; // 20 bytes /** Customer id, UUID v4 */ uint128 customerId; // 16 bytes /** * Min amount this customer needs to invest in ETH. Set zero if no minimum. Expressed as parts of 10000. 1 ETH = 10000. * @notice Decided to use 32-bit words to make the copy-pasted Data field for the ICO transaction less lenghty. */ uint32 minETH; // 4 bytes /** Max amount this customer can to invest in ETH. Set zero if no maximum. Expressed as parts of 10000. 1 ETH = 10000. */ uint32 maxETH; // 4 bytes } /** * Deconstruct server-side byte data to structured data. */ function deserializeKYCPayload(bytes dataframe) internal constant returns(KYCPayload decodedPayload) { KYCPayload payload; payload.whitelistedAddress = dataframe.sliceAddress(0); payload.customerId = uint128(dataframe.slice16(20)); payload.minETH = uint32(dataframe.slice4(36)); payload.maxETH = uint32(dataframe.slice4(40)); return payload; } /** * Helper function to allow us to return the decoded payload to an external caller for testing. * * TODO: Some sort of compiler issue (?) with memory keyword. Tested with solc 0.4.16 and solc 0.4.18. * If used, makes KYCCrowdsale to set itself to a bad state getState() returns 5 (Failure). Overrides some memory? */ /* function broken_getKYCPayload(bytes dataframe) public constant returns(address whitelistedAddress, uint128 customerId, uint32 minEth, uint32 maxEth) { KYCPayload memory payload = deserializeKYCPayload(dataframe); payload.whitelistedAddress = dataframe.sliceAddress(0); payload.customerId = uint128(dataframe.slice16(20)); payload.minETH = uint32(dataframe.slice4(36)); payload.maxETH = uint32(dataframe.slice4(40)); return (payload.whitelistedAddress, payload.customerId, payload.minETH, payload.maxETH); }*/ /** * Same as above, does not seem to cause any issue. */ function getKYCPayload(bytes dataframe) public constant returns(address whitelistedAddress, uint128 customerId, uint32 minEth, uint32 maxEth) { address _whitelistedAddress = dataframe.sliceAddress(0); uint128 _customerId = uint128(dataframe.slice16(20)); uint32 _minETH = uint32(dataframe.slice4(36)); uint32 _maxETH = uint32(dataframe.slice4(40)); return (_whitelistedAddress, _customerId, _minETH, _maxETH); } } /** * A crowdsale that allows only signed payload with server-side specified buy in limits. * * * The token distribution happens as in the allocated crowdsale. * */ contract KYCCrowdsale is AllocatedCrowdsaleMixin, KYCPayloadDeserializer { /* Server holds the private key to this address to decide if the AML payload is valid or not. */ address public signerAddress; /* A new server-side signer key was set to be effective */ event SignerChanged(address signer); /** * Constructor. */ function KYCCrowdsale(address _token, PricingStrategy _pricingStrategy, address _multisigWallet, uint _start, uint _end, uint _minimumFundingGoal, address _beneficiary) CrowdsaleBase(_token, _pricingStrategy, _multisigWallet, _start, _end, _minimumFundingGoal) AllocatedCrowdsaleMixin(_beneficiary) { } /** * A token purchase with anti-money laundering * * ©return tokenAmount How many tokens where bought */ function buyWithKYCData(bytes dataframe, uint8 v, bytes32 r, bytes32 s) public payable returns(uint tokenAmount) { uint _tokenAmount; uint multiplier = 10 ** 18; // Perform signature check for normal addresses // (not deployment accounts, etc.) if(earlyParticipantWhitelist[msg.sender]) { // For test purchases use this faux customer id _tokenAmount = investInternal(msg.sender, 0x1000); } else { bytes32 hash = sha256(dataframe); var (whitelistedAddress, customerId, minETH, maxETH) = getKYCPayload(dataframe); // Check that the KYC data is signed by our server require(ecrecover(hash, v, r, s) == signerAddress); // Only whitelisted address can participate the transaction require(whitelistedAddress == msg.sender); _tokenAmount = investInternal(msg.sender, customerId); } if(!earlyParticipantWhitelist[msg.sender]) { // We assume there is no serious min and max fluctuations for the customer, unless // especially set in the server side per customer manual override. // Otherwise the customer can reuse old data payload with different min or max value // to work around the per customer cap. require(investedAmountOf[msg.sender] >= minETH * multiplier / 10000); require(investedAmountOf[msg.sender] <= maxETH * multiplier / 10000); } return _tokenAmount; } /// @dev This function can set the server side address /// @param _signerAddress The address derived from server's private key function setSignerAddress(address _signerAddress) onlyOwner { signerAddress = _signerAddress; SignerChanged(signerAddress); } }
Contract Security Audit
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000001a7a8bd9106f2b8d977e08582dc7d24c723ab0db000000000000000000000000138002773b444b644c6120214c19d5e13e5c9c4900000000000000000000000071e7c73375efbefdf7b4be67e768d9038dde2488000000000000000000000000000000000000000000000000000000005a315c90000000000000000000000000000000000000000000000000000000005a5cde100000000000000000000000000000000000000000000000000000000000000001000000000000000000000000a684a3371e0d46bca4a6db1ff538a44f1440a855
-----Decoded View---------------
Arg [0] : _token (address): 0x1a7a8BD9106F2B8D977E08582DC7d24c723ab0DB
Arg [1] : _pricingStrategy (address): 0x138002773b444b644c6120214c19D5E13E5c9c49
Arg [2] : _multisigWallet (address): 0x71e7C73375eFBEFdf7B4be67E768D9038dde2488
Arg [3] : _start (uint256): 1513184400
Arg [4] : _end (uint256): 1516035600
Arg [5] : _minimumFundingGoal (uint256): 1
Arg [6] : _beneficiary (address): 0xa684A3371E0d46bCA4A6DB1FF538a44f1440A855
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000001a7a8bd9106f2b8d977e08582dc7d24c723ab0db
Arg [1] : 000000000000000000000000138002773b444b644c6120214c19d5e13e5c9c49
Arg [2] : 00000000000000000000000071e7c73375efbefdf7b4be67e768d9038dde2488
Arg [3] : 000000000000000000000000000000000000000000000000000000005a315c90
Arg [4] : 000000000000000000000000000000000000000000000000000000005a5cde10
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [6] : 000000000000000000000000a684a3371e0d46bca4a6db1ff538a44f1440a855
Libraries Used
SafeMathLib : 0x959ac6cadd10be9c16fc2b05511c30870a3d5c23UnverifiedBytesDeserializer : 0x8bce695330614f61346d37025da5f476f6fdbcb5Unverified
Swarm Source
bzzr://1077dc8563a980d5c6737a6774a401228079c5e00db7aab794cd4fd568a89896
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.