Contract 0x744d70FDBE2Ba4CF95131626614a1763DF805B9E 7

 

Contract Overview

Status Network: SNT Token
Balance:
0 Ether

EtherValue:
$0.00

Token:
 
Txn Hash
Method
Block
From
To
Value
0x8421e664484aa3fd6676c5ee001f8cdf609b52ce282511eb9b45f88d28f1735aTransfer(pending)2022-10-02 11:53:331 hr 38 mins ago0xe439e4c4a08a57b5b86232d7a134c806cbd24ae8 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x362de78baf08ded4dadf8f79fb405ceb49c4affba2345c086ef4019410995eaaApprove And Call(pending)2022-10-02 8:47:314 hrs 44 mins ago0x497d8fc650696f8ff3d3c3797270e0d1db3cc10d IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x184ac8873969e076913b635ca9a2158f707fee6a5c2d72ef867f820ebb659c9aApprove And Call(pending)2022-10-02 8:47:314 hrs 44 mins ago0x497d8fc650696f8ff3d3c3797270e0d1db3cc10d IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x136f3ab40beba9613880badc1bf3928a5113629e949f970660ad01f44d998a09Approve And Call(pending)2022-10-02 7:29:536 hrs 1 min ago0x497d8fc650696f8ff3d3c3797270e0d1db3cc10d IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x1ff33a851ec256e6756d4321d4e5f8611d2f617419fb9c6266f39dbefdccf25bApprove And Call(pending)2022-10-02 7:29:536 hrs 1 min ago0x497d8fc650696f8ff3d3c3797270e0d1db3cc10d IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x3e6d0176e2693da5c4af86a28781f20b5a06943f38144520cfa90b6ba7a5bb5fApprove And Call(pending)2022-10-02 7:14:406 hrs 17 mins ago0x59c12ed0f760bdf7d1057ae039a399bf52780f41 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0xbf12065b50ef69876c0d66caa06857fd97e6ac12a23cf0852e15fe771e2e6cdfTransfer(pending)2022-10-02 6:32:166 hrs 59 mins ago0x5c6e08e704684a63c7bf48b4818ce06e3bab33e8 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x7cc8463ff34747ed5b5dd695e5561b2d4e31ffc081de9b2b9b230cc2de6e8ff5Transfer(pending)2022-10-02 6:26:257 hrs 5 mins ago0x66f470412f43bb875180ca66a0dcf94d112aa6a8 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x585187f97de7a4c7308365140e6981d422babf0c6025ab700b85e0be41a1ade4Approve And Call(pending)2022-10-02 5:15:538 hrs 15 mins ago0x87e9be278167bb935a7781189b91651ae9b6524c IN Status Network: SNT Token0 Ether(Pending)(Pending)
0xa87d8cb6daf6521ad23818398e520535aef7be6c5c235cab28575dbce519a0a4Approve And Call(pending)2022-10-02 4:58:098 hrs 33 mins ago0x33ca9fc661b79005fed1e86ef08c29b714b4893d IN Status Network: SNT Token0 Ether(Pending)(Pending)
0xb51d7a98ee994f72257ca4f6c4f1cf2fb12e9e51648217ad8c85b305ac029133Transfer(pending)2022-10-02 4:45:598 hrs 45 mins ago0xad12ed2fcd42a8bbb8bdd7ee927473bb12bed097 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x22050191e6fd09b93324fd32b50625591290d8eb716116b76cb4e699abbe9ce3Approve And Call(pending)2022-10-02 4:14:529 hrs 16 mins ago0xcfbdc0fb747e370e1ec8c50a51ff6ab0bb40d31f IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x4bd3d61665d3edbef7afab76c347c6c3157afc0d6f83b19e50c8306a83708070Transfer(pending)2022-10-02 4:12:369 hrs 19 mins ago0xa642e80b7f0b216b0e521dbafb7364bf8a440ea3 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0xd3c6e4555fa4719d1795d4c5735857a45c387f815bc3b8b467d67de35c6e9070Approve And Call(pending)2022-10-02 3:54:179 hrs 37 mins ago0x519cd4aaaa84a9e0067f32de6fc8521b18daf495 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x704bd34b297ceaa586090384de75052fdde62da429815c9bcdb81edd135ebb04Approve And Call(pending)2022-10-02 3:38:509 hrs 52 mins ago0x3159dbe4fbc6e22932abe9435d3b9418ee9345a8 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0xbf0abba465d85768554ebaf30c062e8a216bd9a97f07420b5435f3716b98fe39Approve And Call(pending)2022-10-02 3:36:499 hrs 54 mins ago0xa9048dee0b36ae11aa33a6f523d3de8cb3467656 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x385297d27986c2fb8379431553686a60f201c3460f551693fa98ffebf621f75cTransfer(pending)2022-10-02 3:26:1710 hrs 5 mins ago0x850033e68a8adf8d29b57517df380d551a99e5cf IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x3d61da4591fb9fe4fa49c00441326d07e8abcef6f1e8ab0447f410089078bfe8Transfer(pending)2022-10-02 3:24:1810 hrs 7 mins ago0xe439e4c4a08a57b5b86232d7a134c806cbd24ae8 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x2e126815108f81ba274d63d0cf35ec8013001136175f31c0955bec5f3f427852Approve And Call(pending)2022-10-02 3:21:4110 hrs 10 mins ago0x59c12ed0f760bdf7d1057ae039a399bf52780f41 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x92409b43159279cff22a476cb70461e9218cbde29e3f737e8a1995d588530be6Approve And Call(pending)2022-10-02 3:21:4110 hrs 10 mins ago0x59c12ed0f760bdf7d1057ae039a399bf52780f41 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x5ced531157664e7bc304248bdbe2302c3adc1c8da9beaaae35ad6063c395ac21Approve And Call(pending)2022-10-02 3:21:3610 hrs 10 mins ago0x59c12ed0f760bdf7d1057ae039a399bf52780f41 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x1f7ae2f81c46c56897e146fa9f7b8fa9085c545c4d95ebe74dced18679393291Transfer(pending)2022-10-02 3:09:5210 hrs 21 mins ago0x94e5eaa3e3c9f2b9adcb182c349d8290de375525 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x3bbaa06aa13cace29008ed01e804075f39aa9e0e735668dccc6857881dca72cfTransfer(pending)2022-10-02 3:09:3110 hrs 22 mins ago0x9ec2ecdc4a8c2de4bea1b4db2d2a933791958ab8 IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x421f3f526bffb21e07983755d828a5b16ef158cfb1e5de9039a97bfad4095710Transfer(pending)2022-10-02 3:02:2710 hrs 29 mins ago0x066c7717ee56b7c5dfc1a5822b1707dd394d327f IN Status Network: SNT Token0 Ether(Pending)(Pending)
0x7a733a87d67dc802c9aa309b3031ff846ebaf509f66a754432ed85bed88fc384Transfer(pending)2022-10-02 3:02:2710 hrs 29 mins ago0x066c7717ee56b7c5dfc1a5822b1707dd394d327f IN Status Network: SNT Token0 Ether(Pending)(Pending)
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OVERVIEW

Status is an open source messaging platform and mobile browser to interact with decentralized applications that run on the Ethereum Network.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x8ecaa2196ac42d7b74bb02b40ebf15e2bc617d599c7f8a6d977d0efb1ef98797144707422022-03-27 21:46:23188 days 15 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.75016009 Ether
0x603e32e8f4c1d6abc41954e8f513e5e0b1a30c0d704d2cdc32e1667e884cbdfe130439062021-08-17 16:52:50410 days 20 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.12 Ether
0x3eeaeb7e42a3ad59569f947cbb3881f58aeb690252a3401e8e39b90629e978d8130413432021-08-17 7:19:52411 days 6 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.1 Ether
0x4ee16648f3c5b92587023664e20805b48cbf6f320e633f0012a7b290b878a415100500352020-05-12 7:33:43873 days 5 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.28 Ether
0x142f06ac0c005cd34a2ca8f8b49ba59a4bba14ff5bbcba04e04cf8e6c000e137100500102020-05-12 7:25:56873 days 6 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.1593 Ether
0xfdd5cc3ad375d0e050972b7ac8a8e86b722e57a05d6118398158d846a1b328d595134532020-02-19 11:46:27956 days 1 hr ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.0017 Ether
0x81312defd0baca8c4c71c2bce6bf8b3bc6e1ae713c86d4fa03671059b31f1a4177937302019-05-20 0:25:561231 days 13 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.00000782 Ether
0xac7d3bc92b8d1abf155221962564289d99cc64336c04008a741cb8a219a63df676121802019-04-21 16:57:291259 days 20 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.03 Ether
0x6c54a07dd827b6913d38293b5e5b9a60849b4f83de2e5092beb784680bce26d274942182019-04-03 8:17:311278 days 5 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.00602732 Ether
0x3b709efda482e05e3ac5dd46da0c99884d57de9ff22c364773da5c385777943d74941642019-04-03 8:06:351278 days 5 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.00603638 Ether
0x3bcb6eefec5b0cfd3ddb35bba67217c7fcc6bb1841d6f6839c9d195c5835fad661751072018-08-19 11:08:181505 days 2 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.00163457 Ether
0x3858f02c897dfafa86dc5ea43efae5b8cb677a75427acbe7ed353a68c43597d555406332018-05-02 0:36:261614 days 12 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.04 Ether
0x963e0710f685f8109893dcb8ad2e09f3b3b9a524ff9711a95eb031172f38d72354713582018-04-20 0:37:481626 days 12 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.05 Ether
0x4dcdd9d99d6d0439993bdbddd1759d12f998e388ab78ee2b808db4835255d34d54370872018-04-14 4:30:441632 days 9 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.15 Ether
0x603b740fb0ec74b2daa329f389d606b609011490f5b37491ce482bad7ad44fe453429992018-03-29 12:40:491648 days 50 mins ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.001 Ether
0x89437d32010a15ac2e093275f1db2064097a15438df2d3cef05fba5342ef738251746622018-03-01 2:07:051676 days 11 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.05 Ether
0x5a057f5162e6c1c6d0f0ee02994dd20e5f9e5f93d993d1771736267277e4f61051240022018-02-20 10:46:501685 days 2 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.01 Ether
0xdbc0b67251e8965cbaecffa233500f7b826b67fc2ca2c77fe010cedc32ea5d0951239422018-02-20 10:31:201685 days 3 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.01 Ether
0xb9cba40bd281bc915879affcc1163e6c231f5348d7a11687b3ad19b568f68d4851238592018-02-20 10:15:061685 days 3 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.01 Ether
0xcacbdd125b0c346783d7cf1dbba1a75bc6cc16af05f35a7115d2e2a5eea29de650268622018-02-04 3:24:171701 days 10 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.03 Ether
0x61340131f381255758d48389917c8a64851f18618b5c77a3504bd17882f2256250268592018-02-04 3:23:441701 days 10 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.03 Ether
0xc30ba2bc007b8e2eb2f0377f781a8abb502e8b173f6f335ed852752cfc96932750268372018-02-04 3:18:291701 days 10 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.03 Ether
0x8d7c730763822db91fecdcfdae8fb20abf5869283a2e0fcf2505881fdfd08b6249113002018-01-15 7:00:401721 days 6 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.001 Ether
0xd78a9adab18486d1822804e2e4b19614ffcff8cec5e2f39ab5dc9b5ce22f755949080962018-01-14 17:03:411721 days 20 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.01 Ether
0x8913fe8efa56422872a48b162c949931afdc1463e027b4fe6343e3679f4c8a8849080722018-01-14 16:57:281721 days 20 hrs ago Status Network: SNT Token 0x52ae2b53c847327f95a5084a7c38c0adb12fd3020.01 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
SNT

Compiler Version
v0.4.11+commit.68ef5810

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2017-06-19
*/

pragma solidity ^0.4.11;


/// @dev `Owned` is a base level contract that assigns an `owner` that can be
///  later changed
contract Owned {

    /// @dev `owner` is the only address that can call a function with this
    /// modifier
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    address public owner;

    /// @notice The Constructor assigns the message sender to be `owner`
    function Owned() {
        owner = msg.sender;
    }

    address public newOwner;

    /// @notice `owner` can step down and assign some other address to this role
    /// @param _newOwner The address of the new owner. 0x0 can be used to create
    ///  an unowned neutral vault, however that cannot be undone
    function changeOwner(address _newOwner) onlyOwner {
        newOwner = _newOwner;
    }


    function acceptOwnership() {
        if (msg.sender == newOwner) {
            owner = newOwner;
        }
    }
}

// Abstract contract for the full ERC 20 Token standard
// https://github.com/ethereum/EIPs/issues/20

contract ERC20Token {
    /* This is a slight change to the ERC20 base standard.
    function totalSupply() constant returns (uint256 supply);
    is replaced with:
    uint256 public totalSupply;
    This automatically creates a getter function for the totalSupply.
    This is moved to the base contract since public getter functions are not
    currently recognised as an implementation of the matching abstract
    function by the compiler.
    */
    /// total amount of tokens
    uint256 public totalSupply;

    /// @param _owner The address from which the balance will be retrieved
    /// @return The balance
    function balanceOf(address _owner) constant returns (uint256 balance);

    /// @notice send `_value` token to `_to` from `msg.sender`
    /// @param _to The address of the recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transfer(address _to, uint256 _value) returns (bool success);

    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
    /// @param _from The address of the sender
    /// @param _to The address of the recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success);

    /// @notice `msg.sender` approves `_spender` to spend `_value` tokens
    /// @param _spender The address of the account able to transfer the tokens
    /// @param _value The amount of tokens to be approved for transfer
    /// @return Whether the approval was successful or not
    function approve(address _spender, uint256 _value) returns (bool success);

    /// @param _owner The address of the account owning tokens
    /// @param _spender The address of the account able to transfer the tokens
    /// @return Amount of remaining tokens allowed to spent
    function allowance(address _owner, address _spender) constant returns (uint256 remaining);

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}



/**
 * Math operations with safety checks
 */
library SafeMath {
  function mul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint a, uint b) internal returns (uint) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint a, uint b) internal returns (uint) {
    assert(b <= a);
    return a - b;
  }

  function add(uint a, uint b) internal returns (uint) {
    uint c = a + b;
    assert(c >= a);
    return c;
  }

  function max64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a >= b ? a : b;
  }

  function min64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a < b ? a : b;
  }

  function max256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a >= b ? a : b;
  }

  function min256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a < b ? a : b;
  }
}


/*
    Copyright 2017, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title DynamicCeiling Contract
/// @author Jordi Baylina
/// @dev This contract calculates the ceiling from a series of curves.
///  These curves are committed first and revealed later.
///  All the curves must be in increasing order and the last curve is marked
///  as the last one.
///  This contract allows to hide and reveal the ceiling at will of the owner.



contract DynamicCeiling is Owned {
    using SafeMath for uint256;

    struct Curve {
        bytes32 hash;
        // Absolute limit for this curve
        uint256 limit;
        // The funds remaining to be collected are divided by `slopeFactor` smooth ceiling
        // with a long tail where big and small buyers can take part.
        uint256 slopeFactor;
        // This keeps the curve flat at this number, until funds to be collected is less than this
        uint256 collectMinimum;
    }

    address public contribution;

    Curve[] public curves;
    uint256 public currentIndex;
    uint256 public revealedCurves;
    bool public allRevealed;

    /// @dev `contribution` is the only address that can call a function with this
    /// modifier
    modifier onlyContribution {
        require(msg.sender == contribution);
        _;
    }

    function DynamicCeiling(address _owner, address _contribution) {
        owner = _owner;
        contribution = _contribution;
    }

    /// @notice This should be called by the creator of the contract to commit
    ///  all the curves.
    /// @param _curveHashes Array of hashes of each curve. Each hash is calculated
    ///  by the `calculateHash` method. More hashes than actual curves can be
    ///  committed in order to hide also the number of curves.
    ///  The remaining hashes can be just random numbers.
    function setHiddenCurves(bytes32[] _curveHashes) public onlyOwner {
        require(curves.length == 0);

        curves.length = _curveHashes.length;
        for (uint256 i = 0; i < _curveHashes.length; i = i.add(1)) {
            curves[i].hash = _curveHashes[i];
        }
    }


    /// @notice Anybody can reveal the next curve if he knows it.
    /// @param _limit Ceiling cap.
    ///  (must be greater or equal to the previous one).
    /// @param _last `true` if it's the last curve.
    /// @param _salt Random number used to commit the curve
    function revealCurve(uint256 _limit, uint256 _slopeFactor, uint256 _collectMinimum,
                         bool _last, bytes32 _salt) public {
        require(!allRevealed);

        require(curves[revealedCurves].hash == calculateHash(_limit, _slopeFactor, _collectMinimum,
                                                             _last, _salt));

        require(_limit != 0 && _slopeFactor != 0 && _collectMinimum != 0);
        if (revealedCurves > 0) {
            require(_limit >= curves[revealedCurves.sub(1)].limit);
        }

        curves[revealedCurves].limit = _limit;
        curves[revealedCurves].slopeFactor = _slopeFactor;
        curves[revealedCurves].collectMinimum = _collectMinimum;
        revealedCurves = revealedCurves.add(1);

        if (_last) allRevealed = true;
    }

    /// @notice Reveal multiple curves at once
    function revealMulti(uint256[] _limits, uint256[] _slopeFactors, uint256[] _collectMinimums,
                         bool[] _lasts, bytes32[] _salts) public {
        // Do not allow none and needs to be same length for all parameters
        require(_limits.length != 0 &&
                _limits.length == _slopeFactors.length &&
                _limits.length == _collectMinimums.length &&
                _limits.length == _lasts.length &&
                _limits.length == _salts.length);

        for (uint256 i = 0; i < _limits.length; i = i.add(1)) {
            revealCurve(_limits[i], _slopeFactors[i], _collectMinimums[i],
                        _lasts[i], _salts[i]);
        }
    }

    /// @notice Move to curve, used as a failsafe
    function moveTo(uint256 _index) public onlyOwner {
        require(_index < revealedCurves &&       // No more curves
                _index == currentIndex.add(1));  // Only move one index at a time
        currentIndex = _index;
    }

    /// @return Return the funds to collect for the current point on the curve
    ///  (or 0 if no curves revealed yet)
    function toCollect(uint256 collected) public onlyContribution returns (uint256) {
        if (revealedCurves == 0) return 0;

        // Move to the next curve
        if (collected >= curves[currentIndex].limit) {  // Catches `limit == 0`
            uint256 nextIndex = currentIndex.add(1);
            if (nextIndex >= revealedCurves) return 0;  // No more curves
            currentIndex = nextIndex;
            if (collected >= curves[currentIndex].limit) return 0;  // Catches `limit == 0`
        }

        // Everything left to collect from this limit
        uint256 difference = curves[currentIndex].limit.sub(collected);

        // Current point on the curve
        uint256 collect = difference.div(curves[currentIndex].slopeFactor);

        // Prevents paying too much fees vs to be collected; breaks long tail
        if (collect <= curves[currentIndex].collectMinimum) {
            if (difference > curves[currentIndex].collectMinimum) {
                return curves[currentIndex].collectMinimum;
            } else {
                return difference;
            }
        } else {
            return collect;
        }
    }

    /// @notice Calculates the hash of a curve.
    /// @param _limit Ceiling cap.
    /// @param _last `true` if it's the last curve.
    /// @param _salt Random number that will be needed to reveal this curve.
    /// @return The calculated hash of this curve to be used in the `setHiddenCurves` method
    function calculateHash(uint256 _limit, uint256 _slopeFactor, uint256 _collectMinimum,
                           bool _last, bytes32 _salt) public constant returns (bytes32) {
        return keccak256(_limit, _slopeFactor, _collectMinimum, _last, _salt);
    }

    /// @return Return the total number of curves committed
    ///  (can be larger than the number of actual curves on the curve to hide
    ///  the real number of curves)
    function nCurves() public constant returns (uint256) {
        return curves.length;
    }

}


/*
    Copyright 2016, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title MiniMeToken Contract
/// @author Jordi Baylina
/// @dev This token contract's goal is to make it easy for anyone to clone this
///  token using the token distribution at a given block, this will allow DAO's
///  and DApps to upgrade their features in a decentralized manner without
///  affecting the original token
/// @dev It is ERC20 compliant, but still needs to under go further testing.


/// @dev The token controller contract must implement these functions
contract TokenController {
    /// @notice Called when `_owner` sends ether to the MiniMe Token contract
    /// @param _owner The address that sent the ether to create tokens
    /// @return True if the ether is accepted, false if it throws
    function proxyPayment(address _owner) payable returns(bool);

    /// @notice Notifies the controller about a token transfer allowing the
    ///  controller to react if desired
    /// @param _from The origin of the transfer
    /// @param _to The destination of the transfer
    /// @param _amount The amount of the transfer
    /// @return False if the controller does not authorize the transfer
    function onTransfer(address _from, address _to, uint _amount) returns(bool);

    /// @notice Notifies the controller about an approval allowing the
    ///  controller to react if desired
    /// @param _owner The address that calls `approve()`
    /// @param _spender The spender in the `approve()` call
    /// @param _amount The amount in the `approve()` call
    /// @return False if the controller does not authorize the approval
    function onApprove(address _owner, address _spender, uint _amount)
        returns(bool);
}

contract Controlled {
    /// @notice The address of the controller is the only address that can call
    ///  a function with this modifier
    modifier onlyController { if (msg.sender != controller) throw; _; }

    address public controller;

    function Controlled() { controller = msg.sender;}

    /// @notice Changes the controller of the contract
    /// @param _newController The new controller of the contract
    function changeController(address _newController) onlyController {
        controller = _newController;
    }
}

contract ApproveAndCallFallBack {
    function receiveApproval(address from, uint256 _amount, address _token, bytes _data);
}

/// @dev The actual token contract, the default controller is the msg.sender
///  that deploys the contract, so usually this token will be deployed by a
///  token controller contract, which Giveth will call a "Campaign"
contract MiniMeToken is Controlled {

    string public name;                //The Token's name: e.g. DigixDAO Tokens
    uint8 public decimals;             //Number of decimals of the smallest unit
    string public symbol;              //An identifier: e.g. REP
    string public version = 'MMT_0.1'; //An arbitrary versioning scheme


    /// @dev `Checkpoint` is the structure that attaches a block number to a
    ///  given value, the block number attached is the one that last changed the
    ///  value
    struct  Checkpoint {

        // `fromBlock` is the block number that the value was generated from
        uint128 fromBlock;

        // `value` is the amount of tokens at a specific block number
        uint128 value;
    }

    // `parentToken` is the Token address that was cloned to produce this token;
    //  it will be 0x0 for a token that was not cloned
    MiniMeToken public parentToken;

    // `parentSnapShotBlock` is the block number from the Parent Token that was
    //  used to determine the initial distribution of the Clone Token
    uint public parentSnapShotBlock;

    // `creationBlock` is the block number that the Clone Token was created
    uint public creationBlock;

    // `balances` is the map that tracks the balance of each address, in this
    //  contract when the balance changes the block number that the change
    //  occurred is also included in the map
    mapping (address => Checkpoint[]) balances;

    // `allowed` tracks any extra transfer rights as in all ERC20 tokens
    mapping (address => mapping (address => uint256)) allowed;

    // Tracks the history of the `totalSupply` of the token
    Checkpoint[] totalSupplyHistory;

    // Flag that determines if the token is transferable or not.
    bool public transfersEnabled;

    // The factory used to create new clone tokens
    MiniMeTokenFactory public tokenFactory;

////////////////
// Constructor
////////////////

    /// @notice Constructor to create a MiniMeToken
    /// @param _tokenFactory The address of the MiniMeTokenFactory contract that
    ///  will create the Clone token contracts, the token factory needs to be
    ///  deployed first
    /// @param _parentToken Address of the parent token, set to 0x0 if it is a
    ///  new token
    /// @param _parentSnapShotBlock Block of the parent token that will
    ///  determine the initial distribution of the clone token, set to 0 if it
    ///  is a new token
    /// @param _tokenName Name of the new token
    /// @param _decimalUnits Number of decimals of the new token
    /// @param _tokenSymbol Token Symbol for the new token
    /// @param _transfersEnabled If true, tokens will be able to be transferred
    function MiniMeToken(
        address _tokenFactory,
        address _parentToken,
        uint _parentSnapShotBlock,
        string _tokenName,
        uint8 _decimalUnits,
        string _tokenSymbol,
        bool _transfersEnabled
    ) {
        tokenFactory = MiniMeTokenFactory(_tokenFactory);
        name = _tokenName;                                 // Set the name
        decimals = _decimalUnits;                          // Set the decimals
        symbol = _tokenSymbol;                             // Set the symbol
        parentToken = MiniMeToken(_parentToken);
        parentSnapShotBlock = _parentSnapShotBlock;
        transfersEnabled = _transfersEnabled;
        creationBlock = getBlockNumber();
    }


///////////////////
// ERC20 Methods
///////////////////

    /// @notice Send `_amount` tokens to `_to` from `msg.sender`
    /// @param _to The address of the recipient
    /// @param _amount The amount of tokens to be transferred
    /// @return Whether the transfer was successful or not
    function transfer(address _to, uint256 _amount) returns (bool success) {
        if (!transfersEnabled) throw;
        return doTransfer(msg.sender, _to, _amount);
    }

    /// @notice Send `_amount` tokens to `_to` from `_from` on the condition it
    ///  is approved by `_from`
    /// @param _from The address holding the tokens being transferred
    /// @param _to The address of the recipient
    /// @param _amount The amount of tokens to be transferred
    /// @return True if the transfer was successful
    function transferFrom(address _from, address _to, uint256 _amount
    ) returns (bool success) {

        // The controller of this contract can move tokens around at will,
        //  this is important to recognize! Confirm that you trust the
        //  controller of this contract, which in most situations should be
        //  another open source smart contract or 0x0
        if (msg.sender != controller) {
            if (!transfersEnabled) throw;

            // The standard ERC 20 transferFrom functionality
            if (allowed[_from][msg.sender] < _amount) return false;
            allowed[_from][msg.sender] -= _amount;
        }
        return doTransfer(_from, _to, _amount);
    }

    /// @dev This is the actual transfer function in the token contract, it can
    ///  only be called by other functions in this contract.
    /// @param _from The address holding the tokens being transferred
    /// @param _to The address of the recipient
    /// @param _amount The amount of tokens to be transferred
    /// @return True if the transfer was successful
    function doTransfer(address _from, address _to, uint _amount
    ) internal returns(bool) {

           if (_amount == 0) {
               return true;
           }

           if (parentSnapShotBlock >= getBlockNumber()) throw;

           // Do not allow transfer to 0x0 or the token contract itself
           if ((_to == 0) || (_to == address(this))) throw;

           // If the amount being transfered is more than the balance of the
           //  account the transfer returns false
           var previousBalanceFrom = balanceOfAt(_from, getBlockNumber());
           if (previousBalanceFrom < _amount) {
               return false;
           }

           // Alerts the token controller of the transfer
           if (isContract(controller)) {
               if (!TokenController(controller).onTransfer(_from, _to, _amount))
               throw;
           }

           // First update the balance array with the new value for the address
           //  sending the tokens
           updateValueAtNow(balances[_from], previousBalanceFrom - _amount);

           // Then update the balance array with the new value for the address
           //  receiving the tokens
           var previousBalanceTo = balanceOfAt(_to, getBlockNumber());
           if (previousBalanceTo + _amount < previousBalanceTo) throw; // Check for overflow
           updateValueAtNow(balances[_to], previousBalanceTo + _amount);

           // An event to make the transfer easy to find on the blockchain
           Transfer(_from, _to, _amount);

           return true;
    }

    /// @param _owner The address that's balance is being requested
    /// @return The balance of `_owner` at the current block
    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balanceOfAt(_owner, getBlockNumber());
    }

    /// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
    ///  its behalf. This is a modified version of the ERC20 approve function
    ///  to be a little bit safer
    /// @param _spender The address of the account able to transfer the tokens
    /// @param _amount The amount of tokens to be approved for transfer
    /// @return True if the approval was successful
    function approve(address _spender, uint256 _amount) returns (bool success) {
        if (!transfersEnabled) throw;

        // To change the approve amount you first have to reduce the addresses`
        //  allowance to zero by calling `approve(_spender,0)` if it is not
        //  already 0 to mitigate the race condition described here:
        //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
        if ((_amount!=0) && (allowed[msg.sender][_spender] !=0)) throw;

        // Alerts the token controller of the approve function call
        if (isContract(controller)) {
            if (!TokenController(controller).onApprove(msg.sender, _spender, _amount))
                throw;
        }

        allowed[msg.sender][_spender] = _amount;
        Approval(msg.sender, _spender, _amount);
        return true;
    }

    /// @dev This function makes it easy to read the `allowed[]` map
    /// @param _owner The address of the account that owns the token
    /// @param _spender The address of the account able to transfer the tokens
    /// @return Amount of remaining tokens of _owner that _spender is allowed
    ///  to spend
    function allowance(address _owner, address _spender
    ) constant returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }

    /// @notice `msg.sender` approves `_spender` to send `_amount` tokens on
    ///  its behalf, and then a function is triggered in the contract that is
    ///  being approved, `_spender`. This allows users to use their tokens to
    ///  interact with contracts in one function call instead of two
    /// @param _spender The address of the contract able to transfer the tokens
    /// @param _amount The amount of tokens to be approved for transfer
    /// @return True if the function call was successful
    function approveAndCall(address _spender, uint256 _amount, bytes _extraData
    ) returns (bool success) {
        if (!approve(_spender, _amount)) throw;

        ApproveAndCallFallBack(_spender).receiveApproval(
            msg.sender,
            _amount,
            this,
            _extraData
        );

        return true;
    }

    /// @dev This function makes it easy to get the total number of tokens
    /// @return The total number of tokens
    function totalSupply() constant returns (uint) {
        return totalSupplyAt(getBlockNumber());
    }


////////////////
// Query balance and totalSupply in History
////////////////

    /// @dev Queries the balance of `_owner` at a specific `_blockNumber`
    /// @param _owner The address from which the balance will be retrieved
    /// @param _blockNumber The block number when the balance is queried
    /// @return The balance at `_blockNumber`
    function balanceOfAt(address _owner, uint _blockNumber) constant
        returns (uint) {

        // These next few lines are used when the balance of the token is
        //  requested before a check point was ever created for this token, it
        //  requires that the `parentToken.balanceOfAt` be queried at the
        //  genesis block for that token as this contains initial balance of
        //  this token
        if ((balances[_owner].length == 0)
            || (balances[_owner][0].fromBlock > _blockNumber)) {
            if (address(parentToken) != 0) {
                return parentToken.balanceOfAt(_owner, min(_blockNumber, parentSnapShotBlock));
            } else {
                // Has no parent
                return 0;
            }

        // This will return the expected balance during normal situations
        } else {
            return getValueAt(balances[_owner], _blockNumber);
        }
    }

    /// @notice Total amount of tokens at a specific `_blockNumber`.
    /// @param _blockNumber The block number when the totalSupply is queried
    /// @return The total amount of tokens at `_blockNumber`
    function totalSupplyAt(uint _blockNumber) constant returns(uint) {

        // These next few lines are used when the totalSupply of the token is
        //  requested before a check point was ever created for this token, it
        //  requires that the `parentToken.totalSupplyAt` be queried at the
        //  genesis block for this token as that contains totalSupply of this
        //  token at this block number.
        if ((totalSupplyHistory.length == 0)
            || (totalSupplyHistory[0].fromBlock > _blockNumber)) {
            if (address(parentToken) != 0) {
                return parentToken.totalSupplyAt(min(_blockNumber, parentSnapShotBlock));
            } else {
                return 0;
            }

        // This will return the expected totalSupply during normal situations
        } else {
            return getValueAt(totalSupplyHistory, _blockNumber);
        }
    }

////////////////
// Clone Token Method
////////////////

    /// @notice Creates a new clone token with the initial distribution being
    ///  this token at `_snapshotBlock`
    /// @param _cloneTokenName Name of the clone token
    /// @param _cloneDecimalUnits Number of decimals of the smallest unit
    /// @param _cloneTokenSymbol Symbol of the clone token
    /// @param _snapshotBlock Block when the distribution of the parent token is
    ///  copied to set the initial distribution of the new clone token;
    ///  if the block is zero than the actual block, the current block is used
    /// @param _transfersEnabled True if transfers are allowed in the clone
    /// @return The address of the new MiniMeToken Contract
    function createCloneToken(
        string _cloneTokenName,
        uint8 _cloneDecimalUnits,
        string _cloneTokenSymbol,
        uint _snapshotBlock,
        bool _transfersEnabled
        ) returns(address) {
        if (_snapshotBlock == 0) _snapshotBlock = getBlockNumber();
        MiniMeToken cloneToken = tokenFactory.createCloneToken(
            this,
            _snapshotBlock,
            _cloneTokenName,
            _cloneDecimalUnits,
            _cloneTokenSymbol,
            _transfersEnabled
            );

        cloneToken.changeController(msg.sender);

        // An event to make the token easy to find on the blockchain
        NewCloneToken(address(cloneToken), _snapshotBlock);
        return address(cloneToken);
    }

////////////////
// Generate and destroy tokens
////////////////

    /// @notice Generates `_amount` tokens that are assigned to `_owner`
    /// @param _owner The address that will be assigned the new tokens
    /// @param _amount The quantity of tokens generated
    /// @return True if the tokens are generated correctly
    function generateTokens(address _owner, uint _amount
    ) onlyController returns (bool) {
        uint curTotalSupply = getValueAt(totalSupplyHistory, getBlockNumber());
        if (curTotalSupply + _amount < curTotalSupply) throw; // Check for overflow
        updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
        var previousBalanceTo = balanceOf(_owner);
        if (previousBalanceTo + _amount < previousBalanceTo) throw; // Check for overflow
        updateValueAtNow(balances[_owner], previousBalanceTo + _amount);
        Transfer(0, _owner, _amount);
        return true;
    }


    /// @notice Burns `_amount` tokens from `_owner`
    /// @param _owner The address that will lose the tokens
    /// @param _amount The quantity of tokens to burn
    /// @return True if the tokens are burned correctly
    function destroyTokens(address _owner, uint _amount
    ) onlyController returns (bool) {
        uint curTotalSupply = getValueAt(totalSupplyHistory, getBlockNumber());
        if (curTotalSupply < _amount) throw;
        updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
        var previousBalanceFrom = balanceOf(_owner);
        if (previousBalanceFrom < _amount) throw;
        updateValueAtNow(balances[_owner], previousBalanceFrom - _amount);
        Transfer(_owner, 0, _amount);
        return true;
    }

////////////////
// Enable tokens transfers
////////////////


    /// @notice Enables token holders to transfer their tokens freely if true
    /// @param _transfersEnabled True if transfers are allowed in the clone
    function enableTransfers(bool _transfersEnabled) onlyController {
        transfersEnabled = _transfersEnabled;
    }

////////////////
// Internal helper functions to query and set a value in a snapshot array
////////////////

    /// @dev `getValueAt` retrieves the number of tokens at a given block number
    /// @param checkpoints The history of values being queried
    /// @param _block The block number to retrieve the value at
    /// @return The number of tokens being queried
    function getValueAt(Checkpoint[] storage checkpoints, uint _block
    ) constant internal returns (uint) {
        if (checkpoints.length == 0) return 0;

        // Shortcut for the actual value
        if (_block >= checkpoints[checkpoints.length-1].fromBlock)
            return checkpoints[checkpoints.length-1].value;
        if (_block < checkpoints[0].fromBlock) return 0;

        // Binary search of the value in the array
        uint min = 0;
        uint max = checkpoints.length-1;
        while (max > min) {
            uint mid = (max + min + 1)/ 2;
            if (checkpoints[mid].fromBlock<=_block) {
                min = mid;
            } else {
                max = mid-1;
            }
        }
        return checkpoints[min].value;
    }

    /// @dev `updateValueAtNow` used to update the `balances` map and the
    ///  `totalSupplyHistory`
    /// @param checkpoints The history of data being updated
    /// @param _value The new number of tokens
    function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value
    ) internal  {
        if ((checkpoints.length == 0)
        || (checkpoints[checkpoints.length -1].fromBlock < getBlockNumber())) {
               Checkpoint newCheckPoint = checkpoints[ checkpoints.length++ ];
               newCheckPoint.fromBlock =  uint128(getBlockNumber());
               newCheckPoint.value = uint128(_value);
           } else {
               Checkpoint oldCheckPoint = checkpoints[checkpoints.length-1];
               oldCheckPoint.value = uint128(_value);
           }
    }

    /// @dev Internal function to determine if an address is a contract
    /// @param _addr The address being queried
    /// @return True if `_addr` is a contract
    function isContract(address _addr) constant internal returns(bool) {
        uint size;
        if (_addr == 0) return false;
        assembly {
            size := extcodesize(_addr)
        }
        return size>0;
    }

    /// @dev Helper function to return a min betwen the two uints
    function min(uint a, uint b) internal returns (uint) {
        return a < b ? a : b;
    }

    /// @notice The fallback function: If the contract's controller has not been
    ///  set to 0, then the `proxyPayment` method is called which relays the
    ///  ether and creates tokens as described in the token controller contract
    function ()  payable {
        if (isContract(controller)) {
            if (! TokenController(controller).proxyPayment.value(msg.value)(msg.sender))
                throw;
        } else {
            throw;
        }
    }


//////////
// Testing specific methods
//////////

    /// @notice This function is overridden by the test Mocks.
    function getBlockNumber() internal constant returns (uint256) {
        return block.number;
    }

//////////
// Safety Methods
//////////

    /// @notice This method can be used by the controller to extract mistakenly
    ///  sent tokens to this contract.
    /// @param _token The address of the token contract that you want to recover
    ///  set to 0 in case you want to extract ether.
    function claimTokens(address _token) onlyController {
        if (_token == 0x0) {
            controller.transfer(this.balance);
            return;
        }

        ERC20Token token = ERC20Token(_token);
        uint balance = token.balanceOf(this);
        token.transfer(controller, balance);
        ClaimedTokens(_token, controller, balance);
    }

////////////////
// Events
////////////////

    event ClaimedTokens(address indexed _token, address indexed _controller, uint _amount);
    event Transfer(address indexed _from, address indexed _to, uint256 _amount);
    event NewCloneToken(address indexed _cloneToken, uint _snapshotBlock);
    event Approval(
        address indexed _owner,
        address indexed _spender,
        uint256 _amount
        );

}


////////////////
// MiniMeTokenFactory
////////////////

/// @dev This contract is used to generate clone contracts from a contract.
///  In solidity this is the way to create a contract from a contract of the
///  same class
contract MiniMeTokenFactory {

    /// @notice Update the DApp by creating a new token with new functionalities
    ///  the msg.sender becomes the controller of this clone token
    /// @param _parentToken Address of the token being cloned
    /// @param _snapshotBlock Block of the parent token that will
    ///  determine the initial distribution of the clone token
    /// @param _tokenName Name of the new token
    /// @param _decimalUnits Number of decimals of the new token
    /// @param _tokenSymbol Token Symbol for the new token
    /// @param _transfersEnabled If true, tokens will be able to be transferred
    /// @return The address of the new token contract
    function createCloneToken(
        address _parentToken,
        uint _snapshotBlock,
        string _tokenName,
        uint8 _decimalUnits,
        string _tokenSymbol,
        bool _transfersEnabled
    ) returns (MiniMeToken) {
        MiniMeToken newToken = new MiniMeToken(
            this,
            _parentToken,
            _snapshotBlock,
            _tokenName,
            _decimalUnits,
            _tokenSymbol,
            _transfersEnabled
            );

        newToken.changeController(msg.sender);
        return newToken;
    }
}


/*
    Copyright 2017, Jarrad Hope (Status Research & Development GmbH)
*/


contract SNT is MiniMeToken {
    // @dev SNT constructor just parametrizes the MiniMeIrrevocableVestedToken constructor
    function SNT(address _tokenFactory)
            MiniMeToken(
                _tokenFactory,
                0x0,                     // no parent token
                0,                       // no snapshot block number from parent
                "Status Network Token",  // Token name
                18,                      // Decimals
                "SNT",                   // Symbol
                true                     // Enable transfers
            ) {}
}


/*
    Copyright 2017, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title StatusContribution Contract
/// @author Jordi Baylina
/// @dev This contract will be the SNT controller during the contribution period.
///  This contract will determine the rules during this period.
///  Final users will generally not interact directly with this contract. ETH will
///  be sent to the SNT token contract. The ETH is sent to this contract and from here,
///  ETH is sent to the contribution walled and SNTs are mined according to the defined
///  rules.


contract StatusContribution is Owned, TokenController {
    using SafeMath for uint256;

    uint256 constant public failSafeLimit = 300000 ether;
    uint256 constant public maxGuaranteedLimit = 30000 ether;
    uint256 constant public exchangeRate = 10000;
    uint256 constant public maxGasPrice = 50000000000;
    uint256 constant public maxCallFrequency = 100;

    MiniMeToken public SGT;
    MiniMeToken public SNT;
    uint256 public startBlock;
    uint256 public endBlock;

    address public destEthDevs;

    address public destTokensDevs;
    address public destTokensReserve;
    uint256 public maxSGTSupply;
    address public destTokensSgt;
    DynamicCeiling public dynamicCeiling;

    address public sntController;

    mapping (address => uint256) public guaranteedBuyersLimit;
    mapping (address => uint256) public guaranteedBuyersBought;

    uint256 public totalGuaranteedCollected;
    uint256 public totalNormalCollected;

    uint256 public finalizedBlock;
    uint256 public finalizedTime;

    mapping (address => uint256) public lastCallBlock;

    bool public paused;

    modifier initialized() {
        require(address(SNT) != 0x0);
        _;
    }

    modifier contributionOpen() {
        require(getBlockNumber() >= startBlock &&
                getBlockNumber() <= endBlock &&
                finalizedBlock == 0 &&
                address(SNT) != 0x0);
        _;
    }

    modifier notPaused() {
        require(!paused);
        _;
    }

    function StatusContribution() {
        paused = false;
    }


    /// @notice This method should be called by the owner before the contribution
    ///  period starts This initializes most of the parameters
    /// @param _snt Address of the SNT token contract
    /// @param _sntController Token controller for the SNT that will be transferred after
    ///  the contribution finalizes.
    /// @param _startBlock Block when the contribution period starts
    /// @param _endBlock The last block that the contribution period is active
    /// @param _dynamicCeiling Address of the contract that controls the ceiling
    /// @param _destEthDevs Destination address where the contribution ether is sent
    /// @param _destTokensReserve Address where the tokens for the reserve are sent
    /// @param _destTokensSgt Address of the exchanger SGT-SNT where the SNT are sent
    ///  to be distributed to the SGT holders.
    /// @param _destTokensDevs Address where the tokens for the dev are sent
    /// @param _sgt Address of the SGT token contract
    /// @param _maxSGTSupply Quantity of SGT tokens that would represent 10% of status.
    function initialize(
        address _snt,
        address _sntController,

        uint256 _startBlock,
        uint256 _endBlock,

        address _dynamicCeiling,

        address _destEthDevs,

        address _destTokensReserve,
        address _destTokensSgt,
        address _destTokensDevs,

        address _sgt,
        uint256 _maxSGTSupply
    ) public onlyOwner {
        // Initialize only once
        require(address(SNT) == 0x0);

        SNT = MiniMeToken(_snt);
        require(SNT.totalSupply() == 0);
        require(SNT.controller() == address(this));
        require(SNT.decimals() == 18);  // Same amount of decimals as ETH

        require(_sntController != 0x0);
        sntController = _sntController;

        require(_startBlock >= getBlockNumber());
        require(_startBlock < _endBlock);
        startBlock = _startBlock;
        endBlock = _endBlock;

        require(_dynamicCeiling != 0x0);
        dynamicCeiling = DynamicCeiling(_dynamicCeiling);

        require(_destEthDevs != 0x0);
        destEthDevs = _destEthDevs;

        require(_destTokensReserve != 0x0);
        destTokensReserve = _destTokensReserve;

        require(_destTokensSgt != 0x0);
        destTokensSgt = _destTokensSgt;

        require(_destTokensDevs != 0x0);
        destTokensDevs = _destTokensDevs;

        require(_sgt != 0x0);
        SGT = MiniMeToken(_sgt);

        require(_maxSGTSupply >= MiniMeToken(SGT).totalSupply());
        maxSGTSupply = _maxSGTSupply;
    }

    /// @notice Sets the limit for a guaranteed address. All the guaranteed addresses
    ///  will be able to get SNTs during the contribution period with his own
    ///  specific limit.
    ///  This method should be called by the owner after the initialization
    ///  and before the contribution starts.
    /// @param _th Guaranteed address
    /// @param _limit Limit for the guaranteed address.
    function setGuaranteedAddress(address _th, uint256 _limit) public initialized onlyOwner {
        require(getBlockNumber() < startBlock);
        require(_limit > 0 && _limit <= maxGuaranteedLimit);
        guaranteedBuyersLimit[_th] = _limit;
        GuaranteedAddress(_th, _limit);
    }

    /// @notice If anybody sends Ether directly to this contract, consider he is
    ///  getting SNTs.
    function () public payable notPaused {
        proxyPayment(msg.sender);
    }


    //////////
    // MiniMe Controller functions
    //////////

    /// @notice This method will generally be called by the SNT token contract to
    ///  acquire SNTs. Or directly from third parties that want to acquire SNTs in
    ///  behalf of a token holder.
    /// @param _th SNT holder where the SNTs will be minted.
    function proxyPayment(address _th) public payable notPaused initialized contributionOpen returns (bool) {
        require(_th != 0x0);
        if (guaranteedBuyersLimit[_th] > 0) {
            buyGuaranteed(_th);
        } else {
            buyNormal(_th);
        }
        return true;
    }

    function onTransfer(address, address, uint256) public returns (bool) {
        return false;
    }

    function onApprove(address, address, uint256) public returns (bool) {
        return false;
    }

    function buyNormal(address _th) internal {
        require(tx.gasprice <= maxGasPrice);

        // Antispam mechanism
        address caller;
        if (msg.sender == address(SNT)) {
            caller = _th;
        } else {
            caller = msg.sender;
        }

        // Do not allow contracts to game the system
        require(!isContract(caller));

        require(getBlockNumber().sub(lastCallBlock[caller]) >= maxCallFrequency);
        lastCallBlock[caller] = getBlockNumber();

        uint256 toCollect = dynamicCeiling.toCollect(totalNormalCollected);

        uint256 toFund;
        if (msg.value <= toCollect) {
            toFund = msg.value;
        } else {
            toFund = toCollect;
        }

        totalNormalCollected = totalNormalCollected.add(toFund);
        doBuy(_th, toFund, false);
    }

    function buyGuaranteed(address _th) internal {
        uint256 toCollect = guaranteedBuyersLimit[_th];

        uint256 toFund;
        if (guaranteedBuyersBought[_th].add(msg.value) > toCollect) {
            toFund = toCollect.sub(guaranteedBuyersBought[_th]);
        } else {
            toFund = msg.value;
        }

        guaranteedBuyersBought[_th] = guaranteedBuyersBought[_th].add(toFund);
        totalGuaranteedCollected = totalGuaranteedCollected.add(toFund);
        doBuy(_th, toFund, true);
    }

    function doBuy(address _th, uint256 _toFund, bool _guaranteed) internal {
        assert(msg.value >= _toFund);  // Not needed, but double check.
        assert(totalCollected() <= failSafeLimit);

        if (_toFund > 0) {
            uint256 tokensGenerated = _toFund.mul(exchangeRate);
            assert(SNT.generateTokens(_th, tokensGenerated));
            destEthDevs.transfer(_toFund);
            NewSale(_th, _toFund, tokensGenerated, _guaranteed);
        }

        uint256 toReturn = msg.value.sub(_toFund);
        if (toReturn > 0) {
            // If the call comes from the Token controller,
            // then we return it to the token Holder.
            // Otherwise we return to the sender.
            if (msg.sender == address(SNT)) {
                _th.transfer(toReturn);
            } else {
                msg.sender.transfer(toReturn);
            }
        }
    }

    // NOTE on Percentage format
    // Right now, Solidity does not support decimal numbers. (This will change very soon)
    //  So in this contract we use a representation of a percentage that consist in
    //  expressing the percentage in "x per 10**18"
    // This format has a precision of 16 digits for a percent.
    // Examples:
    //  3%   =   3*(10**16)
    //  100% = 100*(10**16) = 10**18
    //
    // To get a percentage of a value we do it by first multiplying it by the percentage in  (x per 10^18)
    //  and then divide it by 10**18
    //
    //              Y * X(in x per 10**18)
    //  X% of Y = -------------------------
    //               100(in x per 10**18)
    //


    /// @notice This method will can be called by the owner before the contribution period
    ///  end or by anybody after the `endBlock`. This method finalizes the contribution period
    ///  by creating the remaining tokens and transferring the controller to the configured
    ///  controller.
    function finalize() public initialized {
        require(getBlockNumber() >= startBlock);
        require(msg.sender == owner || getBlockNumber() > endBlock);
        require(finalizedBlock == 0);

        // Do not allow termination until all curves revealed.
        require(dynamicCeiling.allRevealed());

        // Allow premature finalization if final limit is reached
        if (getBlockNumber() <= endBlock) {
            var (,lastLimit,,) = dynamicCeiling.curves(dynamicCeiling.revealedCurves().sub(1));
            require(totalNormalCollected >= lastLimit);
        }

        finalizedBlock = getBlockNumber();
        finalizedTime = now;

        uint256 percentageToSgt;
        if (SGT.totalSupply() >= maxSGTSupply) {
            percentageToSgt = percent(10);  // 10%
        } else {

            //
            //                           SGT.totalSupply()
            //  percentageToSgt = 10% * -------------------
            //                             maxSGTSupply
            //
            percentageToSgt = percent(10).mul(SGT.totalSupply()).div(maxSGTSupply);
        }

        uint256 percentageToDevs = percent(20);  // 20%


        //
        //  % To Contributors = 41% + (10% - % to SGT holders)
        //
        uint256 percentageToContributors = percent(41).add(percent(10).sub(percentageToSgt));

        uint256 percentageToReserve = percent(29);


        // SNT.totalSupply() -> Tokens minted during the contribution
        //  totalTokens  -> Total tokens that should be after the allocation
        //                   of devTokens, sgtTokens and reserve
        //  percentageToContributors -> Which percentage should go to the
        //                               contribution participants
        //                               (x per 10**18 format)
        //  percent(100) -> 100% in (x per 10**18 format)
        //
        //                       percentageToContributors
        //  SNT.totalSupply() = -------------------------- * totalTokens  =>
        //                             percent(100)
        //
        //
        //                            percent(100)
        //  =>  totalTokens = ---------------------------- * SNT.totalSupply()
        //                      percentageToContributors
        //
        uint256 totalTokens = SNT.totalSupply().mul(percent(100)).div(percentageToContributors);


        // Generate tokens for SGT Holders.

        //
        //                    percentageToReserve
        //  reserveTokens = ----------------------- * totalTokens
        //                      percentage(100)
        //
        assert(SNT.generateTokens(
            destTokensReserve,
            totalTokens.mul(percentageToReserve).div(percent(100))));

        //
        //                  percentageToSgt
        //  sgtTokens = ----------------------- * totalTokens
        //                   percentage(100)
        //
        assert(SNT.generateTokens(
            destTokensSgt,
            totalTokens.mul(percentageToSgt).div(percent(100))));


        //
        //                   percentageToDevs
        //  devTokens = ----------------------- * totalTokens
        //                   percentage(100)
        //
        assert(SNT.generateTokens(
            destTokensDevs,
            totalTokens.mul(percentageToDevs).div(percent(100))));

        SNT.changeController(sntController);

        Finalized();
    }

    function percent(uint256 p) internal returns (uint256) {
        return p.mul(10**16);
    }

    /// @dev Internal function to determine if an address is a contract
    /// @param _addr The address being queried
    /// @return True if `_addr` is a contract
    function isContract(address _addr) constant internal returns (bool) {
        if (_addr == 0) return false;
        uint256 size;
        assembly {
            size := extcodesize(_addr)
        }
        return (size > 0);
    }


    //////////
    // Constant functions
    //////////

    /// @return Total tokens issued in weis.
    function tokensIssued() public constant returns (uint256) {
        return SNT.totalSupply();
    }

    /// @return Total Ether collected.
    function totalCollected() public constant returns (uint256) {
        return totalNormalCollected.add(totalGuaranteedCollected);
    }


    //////////
    // Testing specific methods
    //////////

    /// @notice This function is overridden by the test Mocks.
    function getBlockNumber() internal constant returns (uint256) {
        return block.number;
    }


    //////////
    // Safety Methods
    //////////

    /// @notice This method can be used by the controller to extract mistakenly
    ///  sent tokens to this contract.
    /// @param _token The address of the token contract that you want to recover
    ///  set to 0 in case you want to extract ether.
    function claimTokens(address _token) public onlyOwner {
        if (SNT.controller() == address(this)) {
            SNT.claimTokens(_token);
        }
        if (_token == 0x0) {
            owner.transfer(this.balance);
            return;
        }

        ERC20Token token = ERC20Token(_token);
        uint256 balance = token.balanceOf(this);
        token.transfer(owner, balance);
        ClaimedTokens(_token, owner, balance);
    }


    /// @notice Pauses the contribution if there is any issue
    function pauseContribution() onlyOwner {
        paused = true;
    }

    /// @notice Resumes the contribution
    function resumeContribution() onlyOwner {
        paused = false;
    }

    event ClaimedTokens(address indexed _token, address indexed _controller, uint256 _amount);
    event NewSale(address indexed _th, uint256 _amount, uint256 _tokens, bool _guaranteed);
    event GuaranteedAddress(address indexed _th, uint256 _limit);
    event Finalized();
}


/*
    Copyright 2017, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title ContributionWallet Contract
/// @author Jordi Baylina
/// @dev This contract will be hold the Ether during the contribution period.
///  The idea of this contract is to avoid recycling Ether during the contribution
///  period. So all the ETH collected will be locked here until the contribution
///  period ends

// @dev Contract to hold sale raised funds during the sale period.
// Prevents attack in which the Aragon Multisig sends raised ether
// to the sale contract to mint tokens to itself, and getting the
// funds back immediately.



contract ContributionWallet {

    // Public variables
    address public multisig;
    uint256 public endBlock;
    StatusContribution public contribution;

    // @dev Constructor initializes public variables
    // @param _multisig The address of the multisig that will receive the funds
    // @param _endBlock Block after which the multisig can request the funds
    // @param _contribution Address of the StatusContribution contract
    function ContributionWallet(address _multisig, uint256 _endBlock, address _contribution) {
        require(_multisig != 0x0);
        require(_contribution != 0x0);
        require(_endBlock != 0 && _endBlock <= 4000000);
        multisig = _multisig;
        endBlock = _endBlock;
        contribution = StatusContribution(_contribution);
    }

    // @dev Receive all sent funds without any further logic
    function () public payable {}

    // @dev Withdraw function sends all the funds to the wallet if conditions are correct
    function withdraw() public {
        require(msg.sender == multisig);              // Only the multisig can request it
        require(block.number > endBlock ||            // Allow after end block
                contribution.finalizedBlock() != 0);  // Allow when sale is finalized
        multisig.transfer(this.balance);
    }

}


/*
    Copyright 2017, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title DevTokensHolder Contract
/// @author Jordi Baylina
/// @dev This contract will hold the tokens of the developers.
///  Tokens will not be able to be collected until 6 months after the contribution
///  period ends. And it will be increasing linearly until 2 years.


//  collectable tokens
//   |                         _/--------   vestedTokens rect
//   |                       _/
//   |                     _/
//   |                   _/
//   |                 _/
//   |               _/
//   |             _/
//   |           _/
//   |          |
//   |        . |
//   |      .   |
//   |    .     |
//   +===+======+--------------+----------> time
//     Contrib   6 Months       24 Months
//       End



contract DevTokensHolder is Owned {
    using SafeMath for uint256;

    uint256 collectedTokens;
    StatusContribution contribution;
    MiniMeToken snt;

    function DevTokensHolder(address _owner, address _contribution, address _snt) {
        owner = _owner;
        contribution = StatusContribution(_contribution);
        snt = MiniMeToken(_snt);
    }


    /// @notice The Dev (Owner) will call this method to extract the tokens
    function collectTokens() public onlyOwner {
        uint256 balance = snt.balanceOf(address(this));
        uint256 total = collectedTokens.add(balance);

        uint256 finalizedTime = contribution.finalizedTime();

        require(finalizedTime > 0 && getTime() > finalizedTime.add(months(6)));

        uint256 canExtract = total.mul(getTime().sub(finalizedTime)).div(months(24));

        canExtract = canExtract.sub(collectedTokens);

        if (canExtract > balance) {
            canExtract = balance;
        }

        collectedTokens = collectedTokens.add(canExtract);
        assert(snt.transfer(owner, canExtract));

        TokensWithdrawn(owner, canExtract);
    }

    function months(uint256 m) internal returns (uint256) {
        return m.mul(30 days);
    }

    function getTime() internal returns (uint256) {
        return now;
    }


    //////////
    // Safety Methods
    //////////

    /// @notice This method can be used by the controller to extract mistakenly
    ///  sent tokens to this contract.
    /// @param _token The address of the token contract that you want to recover
    ///  set to 0 in case you want to extract ether.
    function claimTokens(address _token) public onlyOwner {
        require(_token != address(snt));
        if (_token == 0x0) {
            owner.transfer(this.balance);
            return;
        }

        ERC20Token token = ERC20Token(_token);
        uint256 balance = token.balanceOf(this);
        token.transfer(owner, balance);
        ClaimedTokens(_token, owner, balance);
    }

    event ClaimedTokens(address indexed _token, address indexed _controller, uint256 _amount);
    event TokensWithdrawn(address indexed _holder, uint256 _amount);
}


/*
    Copyright 2017, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title SGTExchanger Contract
/// @author Jordi Baylina
/// @dev This contract will be used to distribute SNT between SGT holders.
///  SGT token is not transferable, and we just keep an accounting between all tokens
///  deposited and the tokens collected.
///  The controllerShip of SGT should be transferred to this contract before the
///  contribution period starts.


contract SGTExchanger is TokenController, Owned {
    using SafeMath for uint256;

    mapping (address => uint256) public collected;
    uint256 public totalCollected;
    MiniMeToken public sgt;
    MiniMeToken public snt;
    StatusContribution public statusContribution;

    function SGTExchanger(address _sgt, address _snt, address _statusContribution) {
        sgt = MiniMeToken(_sgt);
        snt = MiniMeToken(_snt);
        statusContribution = StatusContribution(_statusContribution);
    }

    /// @notice This method should be called by the SGT holders to collect their
    ///  corresponding SNTs
    function collect() public {
        uint256 finalizedBlock = statusContribution.finalizedBlock();

        require(finalizedBlock != 0);
        require(getBlockNumber() > finalizedBlock);

        uint256 total = totalCollected.add(snt.balanceOf(address(this)));

        uint256 balance = sgt.balanceOfAt(msg.sender, finalizedBlock);

        // First calculate how much correspond to him
        uint256 amount = total.mul(balance).div(sgt.totalSupplyAt(finalizedBlock));

        // And then subtract the amount already collected
        amount = amount.sub(collected[msg.sender]);

        require(amount > 0);  // Notify the user that there are no tokens to exchange

        totalCollected = totalCollected.add(amount);
        collected[msg.sender] = collected[msg.sender].add(amount);

        assert(snt.transfer(msg.sender, amount));

        TokensCollected(msg.sender, amount);
    }

    function proxyPayment(address) public payable returns (bool) {
        throw;
    }

    function onTransfer(address, address, uint256) public returns (bool) {
        return false;
    }

    function onApprove(address, address, uint256) public returns (bool) {
        return false;
    }

    //////////
    // Testing specific methods
    //////////

    /// @notice This function is overridden by the test Mocks.
    function getBlockNumber() internal constant returns (uint256) {
        return block.number;
    }

    //////////
    // Safety Method
    //////////

    /// @notice This method can be used by the controller to extract mistakenly
    ///  sent tokens to this contract.
    /// @param _token The address of the token contract that you want to recover
    ///  set to 0 in case you want to extract ether.
    function claimTokens(address _token) public onlyOwner {
        require(_token != address(snt));
        if (_token == 0x0) {
            owner.transfer(this.balance);
            return;
        }

        ERC20Token token = ERC20Token(_token);
        uint256 balance = token.balanceOf(this);
        token.transfer(owner, balance);
        ClaimedTokens(_token, owner, balance);
    }

    event ClaimedTokens(address indexed _token, address indexed _controller, uint256 _amount);
    event TokensCollected(address indexed _holder, uint256 _amount);

}

/*
    Copyright 2017, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title SNTPlaceholder Contract
/// @author Jordi Baylina
/// @dev The SNTPlaceholder contract will take control over the SNT after the contribution
///  is finalized and before the Status Network is deployed.
///  The contract allows for SNT transfers and transferFrom and implements the
///  logic for transferring control of the token to the network when the offering
///  asks it to do so.


contract SNTPlaceHolder is TokenController, Owned {
    using SafeMath for uint256;

    MiniMeToken public snt;
    StatusContribution public contribution;
    uint256 public activationTime;
    address public sgtExchanger;

    /// @notice Constructor
    /// @param _owner Trusted owner for this contract.
    /// @param _snt SNT token contract address
    /// @param _contribution StatusContribution contract address
    /// @param _sgtExchanger SGT-SNT Exchange address. (During the first week
    ///  only this exchanger will be able to move tokens)
    function SNTPlaceHolder(address _owner, address _snt, address _contribution, address _sgtExchanger) {
        owner = _owner;
        snt = MiniMeToken(_snt);
        contribution = StatusContribution(_contribution);
        sgtExchanger = _sgtExchanger;
    }

    /// @notice The owner of this contract can change the controller of the SNT token
    ///  Please, be sure that the owner is a trusted agent or 0x0 address.
    /// @param _newController The address of the new controller

    function changeController(address _newController) public onlyOwner {
        snt.changeController(_newController);
        ControllerChanged(_newController);
    }


    //////////
    // MiniMe Controller Interface functions
    //////////

    // In between the offering and the network. Default settings for allowing token transfers.
    function proxyPayment(address) public payable returns (bool) {
        return false;
    }

    function onTransfer(address _from, address, uint256) public returns (bool) {
        return transferable(_from);
    }

    function onApprove(address _from, address, uint256) public returns (bool) {
        return transferable(_from);
    }

    function transferable(address _from) internal returns (bool) {
        // Allow the exchanger to work from the beginning
        if (activationTime == 0) {
            uint256 f = contribution.finalizedTime();
            if (f > 0) {
                activationTime = f.add(1 weeks);
            } else {
                return false;
            }
        }
        return (getTime() > activationTime) || (_from == sgtExchanger);
    }


    //////////
    // Testing specific methods
    //////////

    /// @notice This function is overrided by the test Mocks.
    function getTime() internal returns (uint256) {
        return now;
    }


    //////////
    // Safety Methods
    //////////

    /// @notice This method can be used by the controller to extract mistakenly
    ///  sent tokens to this contract.
    /// @param _token The address of the token contract that you want to recover
    ///  set to 0 in case you want to extract ether.
    function claimTokens(address _token) public onlyOwner {
        if (snt.controller() == address(this)) {
            snt.claimTokens(_token);
        }
        if (_token == 0x0) {
            owner.transfer(this.balance);
            return;
        }

        ERC20Token token = ERC20Token(_token);
        uint256 balance = token.balanceOf(this);
        token.transfer(owner, balance);
        ClaimedTokens(_token, owner, balance);
    }

    event ClaimedTokens(address indexed _token, address indexed _controller, uint256 _amount);
    event ControllerChanged(address indexed _newController);
}

Contract Security Audit

Contract ABI

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000a1c957c0210397d2d0296341627b74411756d476

-----Decoded View---------------
Arg [0] : _tokenFactory (address): 0xa1c957C0210397D2d0296341627B74411756d476

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000a1c957c0210397d2d0296341627b74411756d476


Swarm Source

bzzr://e0e31a8f1c74e2661a82a8af63c985ee5d966d6285181f007024cd53c503dd8a
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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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.