Source Code
Overview
ETH Balance
0 ETH
Eth Value
$0.00Latest 6 from a total of 6 transactions
| Transaction Hash |
Method
|
Block
|
From
|
|
To
|
||||
|---|---|---|---|---|---|---|---|---|---|
| Halt | 4765765 | 3019 days ago | IN | 0 ETH | 0.00109644 | ||||
| Buy With KYC Dat... | 4765374 | 3019 days ago | IN | 645 ETH | 0.00915862 | ||||
| Buy With KYC Dat... | 4714273 | 3028 days ago | IN | 0.01 ETH | 0.00560691 | ||||
| Set Early Parici... | 4714268 | 3028 days ago | IN | 0 ETH | 0.00138582 | ||||
| Set Signer Addre... | 4714263 | 3028 days ago | IN | 0 ETH | 0.00134202 | ||||
| Set Finalize Age... | 4714263 | 3028 days ago | IN | 0 ETH | 0.00136677 |
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This contract contains unverified libraries: BytesDeserializer, SafeMathLib
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 2017-12-11
*/
/**
* 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
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
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Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000001a7a8bd9106f2b8d977e08582dc7d24c723ab0db0000000000000000000000004ba4e61241fe471c5ce76cc2ec582b9da7d5376e00000000000000000000000071e7c73375efbefdf7b4be67e768d9038dde2488000000000000000000000000000000000000000000000000000000005a315c90000000000000000000000000000000000000000000000000000000005a5cde100000000000000000000000000000000000000000000000000000000000000001000000000000000000000000a684a3371e0d46bca4a6db1ff538a44f1440a855
-----Decoded View---------------
Arg [0] : _token (address): 0x1a7a8BD9106F2B8D977E08582DC7d24c723ab0DB
Arg [1] : _pricingStrategy (address): 0x4BA4e61241Fe471c5cE76Cc2EC582B9da7D5376e
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] : 0000000000000000000000004ba4e61241fe471c5ce76cc2ec582b9da7d5376e
Arg [2] : 00000000000000000000000071e7c73375efbefdf7b4be67e768d9038dde2488
Arg [3] : 000000000000000000000000000000000000000000000000000000005a315c90
Arg [4] : 000000000000000000000000000000000000000000000000000000005a5cde10
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [6] : 000000000000000000000000a684a3371e0d46bca4a6db1ff538a44f1440a855
Libraries Used
BytesDeserializer : 0x29b6058e9fc60eba8e1721fafa1c28c10e1de304UnverifiedSafeMathLib : 0xde8a795d5d9773a4674190cf1abd8dd3f0f6e70cUnverified
Swarm Source
bzzr://1077dc8563a980d5c6737a6774a401228079c5e00db7aab794cd4fd568a89896
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Net Worth in USD
$0.00
Net Worth in ETH
0
Multichain Portfolio | 33 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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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.