Source Code
Latest 25 from a total of 50 transactions
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| Unlock Vested To... | 22682426 | 263 days ago | IN | 0 ETH | 0.00082485 | ||||
| Granting | 22682420 | 263 days ago | IN | 0 ETH | 0.00143995 | ||||
| Granting | 22682396 | 263 days ago | IN | 0 ETH | 0.00146272 | ||||
| Unlock Vested To... | 22646163 | 269 days ago | IN | 0 ETH | 0.00031127 | ||||
| Unlock Vested To... | 21682207 | 403 days ago | IN | 0 ETH | 0.00100083 | ||||
| Granting | 21682199 | 403 days ago | IN | 0 ETH | 0.00178674 | ||||
| Unlock Vested To... | 21480861 | 431 days ago | IN | 0 ETH | 0.00056659 | ||||
| Unlock Vested To... | 21471256 | 433 days ago | IN | 0 ETH | 0.0004052 | ||||
| Unlock Vested To... | 21374324 | 446 days ago | IN | 0 ETH | 0.00186908 | ||||
| Unlock Vested To... | 21336572 | 452 days ago | IN | 0 ETH | 0.00155055 | ||||
| Unlock Vested To... | 21308299 | 456 days ago | IN | 0 ETH | 0.00127977 | ||||
| Unlock Vested To... | 21152180 | 477 days ago | IN | 0 ETH | 0.00115467 | ||||
| Granting | 21151954 | 477 days ago | IN | 0 ETH | 0.00136065 | ||||
| Unlock Vested To... | 20248443 | 603 days ago | IN | 0 ETH | 0.00027594 | ||||
| Unlock Vested To... | 19626182 | 690 days ago | IN | 0 ETH | 0.00157112 | ||||
| Unlock Vested To... | 19383637 | 725 days ago | IN | 0 ETH | 0.00655005 | ||||
| Granting | 19383628 | 725 days ago | IN | 0 ETH | 0.01026172 | ||||
| Unlock Vested To... | 19383019 | 725 days ago | IN | 0 ETH | 0.00361576 | ||||
| Unlock Vested To... | 19377217 | 725 days ago | IN | 0 ETH | 0.00590164 | ||||
| Unlock Vested To... | 19262614 | 742 days ago | IN | 0 ETH | 0.00375838 | ||||
| Unlock Vested To... | 19211035 | 749 days ago | IN | 0 ETH | 0.00131068 | ||||
| Unlock Vested To... | 18921333 | 789 days ago | IN | 0 ETH | 0.00169746 | ||||
| Unlock Vested To... | 18291213 | 878 days ago | IN | 0 ETH | 0.00051314 | ||||
| Unlock Vested To... | 18014323 | 916 days ago | IN | 0 ETH | 0.00252126 | ||||
| Unlock Vested To... | 17849753 | 939 days ago | IN | 0 ETH | 0.00135206 |
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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0xE07f8536...0A3148072 The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
OVRVesting
Compiler Version
v0.4.24+commit.e67f0147
Contract Source Code (Solidity)
/**
*Submitted for verification at Etherscan.io on 2020-12-26
*/
pragma solidity 0.4.24;
// File: node_modules/openzeppelin-solidity/contracts/math/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
}
// File: node_modules/openzeppelin-solidity/contracts/ownership/Ownable.sol
/**
* @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;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
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) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
// File: node_modules/openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
// File: node_modules/openzeppelin-solidity/contracts/token/ERC20/ERC20.sol
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: node_modules/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
assert(token.transfer(to, value));
}
function safeTransferFrom(
ERC20 token,
address from,
address to,
uint256 value
)
internal
{
assert(token.transferFrom(from, to, value));
}
function safeApprove(ERC20 token, address spender, uint256 value) internal {
assert(token.approve(spender, value));
}
}
// File: contracts/OVRVesting.sol
/**
* @title Vesting trustee contract for OVRToken.
*/
contract OVRVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for ERC20;
uint256 private constant vstart = 1608037200; //15 dec 2020
uint256 public constant vcliff = 1608037200; //15 dec 2020
uint256 public constant vend = 1734267600; // 15 dec 2024
uint256 public constant vinstallmentLength = 3600; // 60 min
// OVRToken contract.
ERC20 public constant token = ERC20(0x21BfBDa47A0B4B5b1248c767Ee49F7caA9B23697);
// Vesting grant for a specific holder.
struct Grant {
uint256 value;
uint256 start;
uint256 cliff;
uint256 end;
uint256 installmentLength; // In seconds.
uint256 transferred;
bool revocable;
}
// Holder to grant information mapping.
mapping (address => Grant) public grants;
// Total tokens available for vesting.
uint256 public totalVesting;
event NewGrant(address indexed _from, address indexed _to, uint256 _value);
event TokensUnlocked(address indexed _to, uint256 _value);
event GrantRevoked(address indexed _holder, uint256 _refund);
/**
* @dev Unlock vested tokens and transfer them to their holder.
*/
function unlockVestedTokens() external {
Grant storage grant_ = grants[msg.sender];
// Require that the grant is not empty.
require(grant_.value != 0);
// Get the total amount of vested tokens, according to grant.
uint256 vested = calculateVestedTokens(grant_, block.timestamp);
if (vested == 0) {
return;
}
// Make sure the holder doesn't transfer more than what he already has.
uint256 transferable = vested.sub(grant_.transferred);
if (transferable == 0) {
return;
}
// Update transferred and total vesting amount, then transfer remaining vested funds to holder.
grant_.transferred = grant_.transferred.add(transferable);
totalVesting = totalVesting.sub(transferable);
token.safeTransfer(msg.sender, transferable);
emit TokensUnlocked(msg.sender, transferable);
}
/**
* @dev Grant tokens to a specified address.
* @param _to address The holder address.
* @param _value uint256 The amount of tokens to be granted.
* @param _revocable bool Whether the grant is revocable or not.
*/
function granting(address _to, uint256 _value, bool _revocable)
external onlyOwner
{
require(_to != address(0));
// Don't allow holder to be this contract.
require(_to != address(this));
require(_value > 0);
// Require that every holder can be granted tokens only once.
require(grants[_to].value == 0);
// Assign a new grant.
grants[_to] = Grant({
value: _value,
start: vstart,
cliff: vcliff,
end: vend,
installmentLength: vinstallmentLength,
transferred: 0,
revocable: _revocable
});
// Since tokens have been granted, increase the total amount of vesting.
totalVesting = totalVesting.add(_value);
emit NewGrant(msg.sender, _to, _value);
}
/**
* @dev Calculate the total amount of vested tokens of a holder at a given time.
* @param _holder address The address of the holder.
* @param _time uint256 The specific time to calculate against.
* @return a uint256 Representing a holder's total amount of vested tokens.
*/
function vestedTokens(address _holder, uint256 _time) external constant returns (uint256) {
Grant memory grant_ = grants[_holder];
if (grant_.value == 0) {
return 0;
}
return calculateVestedTokens(grant_, _time);
}
/**
* @dev Revoke the grant of tokens of a specifed address.
* @param _holder The address which will have its tokens revoked.
*/
function revoke(address _holder) public onlyOwner {
Grant memory grant_ = grants[_holder];
// Grant must be revocable.
require(grant_.revocable);
// Calculate amount of remaining tokens that are still available (i.e. not yet vested) to be returned to owner.
uint256 vested = calculateVestedTokens(grant_, block.timestamp);
uint256 notTransferredInstallment = vested.sub(grant_.transferred);
uint256 refund = grant_.value.sub(vested);
//Update of transferred not necessary due to deletion of the grant in the following step.
// Remove grant information.
delete grants[_holder];
// Update total vesting amount and transfer previously calculated tokens to owner.
totalVesting = totalVesting.sub(refund).sub(notTransferredInstallment);
// Transfer vested amount that was not yet transferred to _holder.
token.safeTransfer(_holder, notTransferredInstallment);
emit TokensUnlocked(_holder, notTransferredInstallment);
token.safeTransfer(msg.sender, refund);
emit TokensUnlocked(msg.sender, refund);
emit GrantRevoked(_holder, refund);
}
/**
* @dev Revoke all the grants of tokens.
* @param _vault The address which will receive the tokens.
*/
function revokeAll(address _vault) external onlyOwner {
uint256 transferable=token.balanceOf(address(this));
token.safeTransfer(_vault, transferable);
}
/**
* @dev Calculate amount of vested tokens at a specifc time.
* @param _grant Grant The vesting grant.
* @param _time uint256 The time to be checked
* @return a uint256 Representing the amount of vested tokens of a specific grant.
*/
function calculateVestedTokens(Grant _grant, uint256 _time) private pure returns (uint256) {
// If we're before the cliff, then nothing is vested.
if (_time < _grant.cliff) {
return 0;
}
// If we're after the end of the vesting period - everything is vested;
if (_time >= _grant.end) {
return _grant.value;
}
// Calculate amount of installments past until now.
// NOTE result gets floored because of integer division.
uint256 installmentsPast = _time.sub(_grant.start).div(_grant.installmentLength);
// Calculate amount of days in entire vesting period.
uint256 vestingDays = _grant.end.sub(_grant.start);
// Calculate and return installments that have passed according to vesting days that have passed.
return _grant.value.mul(installmentsPast.mul(_grant.installmentLength)).div(vestingDays);
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"constant":true,"inputs":[{"name":"_holder","type":"address"},{"name":"_time","type":"uint256"}],"name":"vestedTokens","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"vinstallmentLength","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_revocable","type":"bool"}],"name":"granting","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"vend","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_holder","type":"address"}],"name":"revoke","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"vcliff","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalVesting","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"unlockVestedTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"grants","outputs":[{"name":"value","type":"uint256"},{"name":"start","type":"uint256"},{"name":"cliff","type":"uint256"},{"name":"end","type":"uint256"},{"name":"installmentLength","type":"uint256"},{"name":"transferred","type":"uint256"},{"name":"revocable","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_vault","type":"address"}],"name":"revokeAll","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"NewGrant","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"TokensUnlocked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_holder","type":"address"},{"indexed":false,"name":"_refund","type":"uint256"}],"name":"GrantRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"}]Contract Creation Code
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Swarm Source
bzzr://496a9d3dac7012e0c2a4a8dcd4060b4093074ea1e0d9512bac7554ced1ed83f2
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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.