Contract Address 0x73c084388F5423c991030C3FA22249D3e02b1960

 

Overview

Total Supply:
1,000,000,000 MDR

Circulating Supply:
300,000,000 MDR

Holders:
Addresses

Price:
$0.07

Market Cap/Fully MC:
$400,000,000 (@ $0.07)

Token:
My Name Tag:
Not Available, login to update

Contract:
0x73c084388F5423c991030C3FA22249D3e02b1960

Creator:
0x7d528109c7Db392E92740C982A4e36f37c4ca684

Decimal:
8

Issuing Time :
2023-05-04 11:23

Official Website:
#

Social Profiles:
Balance
600 MDR

Value
$0.00

Txn Hash
Method
Age
From
To
Quantity
0xde7fa8b4220c76b0448211ac7193880471d77e68598205e8a7ddb53a23cffd20 Transfer 2024-05-15 08:16:38 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0xb41cc133d47bd4597e0184b9db89a6adba44a0baa1de1e64d441ba6578850094 Transfer 2024-05-12 07:42:55 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x680afa0d552c74a572a998d7ae68db7f08245dcaddb1f443dceff7d8f32cd494 Transfer 2024-05-07 22:38:31 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 OUT 0xff83aa0debd94f4a696292eb88fd84a4b402452a 10,800.0000 MDR
0x0e2a2ad6d4722a64f92ced9876d35d41e4da3935f4dceda4ab030d599b77f8db Transfer 2024-04-23 14:13:54 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,500.0000 MDR
0x8e80fdea1cecae83e31fe73050f0d12d05bee5e9d26dc14a04d9f396f2bb91b6 Transfer 2024-04-23 14:13:03 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0xe33fd938af71739b4c57778317809e3e24d54eec4c84c1c843bf556a9276ae20 Transfer 2024-04-22 08:33:25 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,000.0000 MDR
0xee6dd5ce7f17aae46c00139a906d2606071afd7f5a78e347a4d07f0775f4036a Transfer 2024-04-22 01:36:13 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x5f3f26c1f7ec49c78f1dfb7ee16fc283f24cfb17832c897816c25731deeecf3a Transfer 2024-04-22 00:18:43 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 4,000.0000 MDR
0xd1219cc464308427f2e091e0b6989231291d9e5dd19cb00f2018fdcc11594d48 Transfer 2024-04-22 00:10:04 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 2,000.0000 MDR
0x9215f0bf7cd60ad56649c4e8eee70286def2a7bbd81d55a034ec2bc7fe7c0173 Transfer 2024-04-21 23:38:04 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,700.0000 MDR
0xf17ae0bde89016d366ce98a8b5ffbb53a619a7c35d3c43b96e3c72b10f846b60 Transfer 2024-04-21 23:27:46 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x1d963334d02c2f38cfd2944ea2cac060d43d2d07dc4338eb8ce7f3f120de5c2d Transfer 2024-03-20 15:28:21 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 OUT 0xff83aa0debd94f4a696292eb88fd84a4b402452a 2,950.0000 MDR
0xb53dbcc8320bf2e95cff06e80f6f56b7b562d9c8b00a6d84b343b327e2db1b08 Transfer 2024-03-10 05:23:38 0x46040428cc95f3f99cc01ebc26ff7cc8379546a3 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 400.0000 MDR
0x78dfa2cb402d21207d51607eb692893e3ee043449a3ca4221fb4f1f6a0cd3288 Transfer 2024-03-10 05:22:11 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 300.0000 MDR
0xb7d5f2b682931851a5f472e7bd7f2ee209f96f2aa4394d3e1a307fae33056c97 Transfer 2024-03-10 05:21:17 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0xcac2d2bf165126723957c452f5cf136f1740c17dc69635ba92f02b44abc11f95 Transfer 2024-03-10 05:20:32 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x64d4b9c2ca707383312525a70a5bde159b8191cef117e8d997d4573c3a64fbb2 Transfer 2024-03-10 05:19:47 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0x3a7bfebace03e8377cbf0cd787db0d52297c251aa16f009a41a0f4db66dec943 Transfer 2024-03-10 05:18:35 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0x69e04f2d29b082cec0c8058ef9a2c48edcb94e344b169757a644fa2bff49ae77 Transfer 2024-03-10 05:17:44 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0x4492b71c251c29ee3d414f35cff26a12d9e0fc2a793f658aef21bba32fea4b2b Transfer 2024-03-09 13:32:35 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x51719b108efc8f900250720ba1d6d00b94321d3e434c7c12b1a8a7a838566006 Transfer 2024-03-09 13:30:17 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0xd0cd707a44d3fb3f4d4c452fe05768067abce62506028ea3642c022f1231a921 Transfer 2024-03-09 13:25:02 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0xa2c7ff92c2c2b7a67cd156a683520b9d6c7af06cc5b7ecaeff663dcd59564555 Transfer 2024-03-09 13:19:50 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 50.0000 MDR
0xc5ee1171be0078074952cd052d813ba88e9b0c62c4df16c5e4496110dc8b7018 Transfer 2024-03-01 13:12:28 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 OUT 0xff83aa0debd94f4a696292eb88fd84a4b402452a 2,000.0000 MDR
0xa91076c5dac1e5cd9c62b1a1fbefdfd739e918b68bba2ca6408d115171f6331b Transfer 2024-02-10 13:34:43 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0xa2a14cdfffd2a4dc8568077a662968b5177e73707cefa11d7d6ed15ba1bb7abf Transfer 2024-02-10 13:33:19 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x702faaff618d08d1f04be1d5b73de30f845f15e66fa21c0a2aa76eb3ab06e76e Transfer 2024-02-10 13:17:55 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x7c0c20c8113547bc3cfb43a0e7a39284e09bf3a268805a9bcad51d7406a8b618 Transfer 2024-01-28 20:02:54 0x46040428cc95f3f99cc01ebc26ff7cc8379546a3 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x61de96f68cd6dfcfd9492b9eea27bd0d9432f563acc4c906424f7b5132f95990 Transfer 2024-01-28 20:01:09 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0xf1daa231860324da4ebb2af5743f431213057d544bdc08bd9df13fcfa311c133 Transfer 2024-01-28 19:59:33 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 300.0000 MDR
0xc07a52da6d968a86a2e176cafd51bed7301266fa76bcabaf3c0a28cb5fea009e Transfer 2024-01-17 17:45:38 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x2626466f25ba1cf5215b0ab3e6b09ba9fa18f868f2c0917cea27b6b9531c034c Transfer 2024-01-16 17:16:48 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 OUT 0xff83aa0debd94f4a696292eb88fd84a4b402452a 217.0000 MDR
0xa6553c30b98adc4937d183f1f8964d1d6eeb5ed5f1a41c9bb413909e9d160d57 Transfer 2024-01-12 17:58:11 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 217.0000 MDR
0x70badfac8630adc9125494c7893aca0fd907bbc5f39ed2cd0c650b04cb98c8b2 Transfer 2024-01-10 18:01:05 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 OUT 0xff83aa0debd94f4a696292eb88fd84a4b402452a 12,450.0000 MDR
0x741150a9909b578fb784d5c326811ef31b62a24cbddfaa3bda12d732419a4cf6 Transfer 2024-01-07 16:29:15 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0x0e334e0d5b2732403c64e06484659ea4d870f0296cc9b1ad809d33e7bab58958 Transfer 2024-01-07 16:25:15 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x7f761bfd3cb303f8c9596e6907d111816ed90af9d0368e4ea9d529acf93904da Transfer 2024-01-07 16:23:09 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 300.0000 MDR
0x8dfc4e2deda0512b8853224ec878046366be9c6e97d872209ca48360435ee9b8 Transfer 2024-01-06 12:18:12 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0xf338294be6fd4b4b77dab4b8843bf1dd4897de83b47064e8756a203216146cd1 Transfer 2024-01-06 12:16:27 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x867e3bb1e750adb8115bd62929689b6860652e22ac4a6f60504ce15ca7457c56 Transfer 2024-01-04 01:13:51 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 300.0000 MDR
0xa7727794a6ab67dbe613eea4aa4e105257bbbffcad0b791837459fad8f146e0d Transfer 2024-01-04 01:12:48 0x46040428cc95f3f99cc01ebc26ff7cc8379546a3 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0x318d08a40979029de27ad89a3d8f5ff629a34c9445b300da9fee54cd6cf5c2c7 Transfer 2024-01-04 01:11:06 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x8569efa42640d996629f536150932deb30c6bcaa3b6cd8a24a56a5002ecd0ff2 Transfer 2023-12-20 17:55:04 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0xd096f879b3545aeb8ec9297acbede5fe3a4a1832e18b6f9a447e12d77a33943a Transfer 2023-12-20 17:53:46 0x46040428cc95f3f99cc01ebc26ff7cc8379546a3 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 200.0000 MDR
0xff1094929e7c349d645c4c419b3bc5ad86368189d431dcf234223688441f3409 Transfer 2023-12-20 17:52:37 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0x58f1dbcfd8cb2528d402ba98d8a07164af241868a08a65ecffbc429303554ac4 Transfer 2023-12-20 17:45:37 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0xb98ea2f25f82f532d589966686ccfb63cb198424ae129be4a41072c867de80ab Transfer 2023-12-13 11:38:54 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,000.0000 MDR
0xed8346c7d28e026abdefbd1cf00304b35522c2b7aee260da4daa0469e9258ae5 Transfer 2023-12-13 11:37:12 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 2,000.0000 MDR
0x46c577d8647b2191579ffbd640170a78505833d21b5f3190bb22a7cbfb00d1c7 Transfer 2023-12-07 20:38:09 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,000.0000 MDR
0x3f0c0f807763221d92a87b37b7b3daf21b602a688ab239e4230f5aa3251101db Transfer 2023-12-07 20:36:48 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,000.0000 MDR
0x7c1c80f4971f67093635f513189b4963ce38c6e1e490a3950397e18b95ac9a93 Transfer 2023-12-07 05:20:36 0xfbbd5ddc49f6d9ab0c016a76aa0b4f63dcbad133 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,000.0000 MDR
0x50786a7e27154c0ab8332589e664cd6b997a8638241cd1425b2745c060985e5c Transfer 2023-12-07 05:19:03 0x9ce5a4f346f1e3e27922ec262412a99d00b7f50c IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0xd8322c6cbe5336dd56f4b9db56793fb5b20114fd56e25d1715ef0df3d51ae01b Transfer 2023-12-07 05:17:21 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 500.0000 MDR
0xf118b4f12a7fea015f5302ce9a5825945a6cd5275a72342087805673e13097c6 Transfer 2023-12-07 05:09:24 0xffb0a55ccd41015bb2b21c071589a724d6739be2 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 1,000.0000 MDR
0x0e4d913e778fa0372d16906453ae10685f357a156d61aacab51898ec178db005 Transfer 2023-11-23 20:59:27 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 300.0000 MDR
0xc3661a24b934100fbc407f72447ffffb7ea53d701a143c5fe7ccb9cec0e90717 Transfer 2023-11-23 20:52:12 0x2ef101b0e81b79466c591fd95eb11adc62fbfaa7 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR
0x25168e37086b745fcd0e854e3a3ec9943f5bb5776cce54a1a67b2cc17831fa86 Transfer 2023-11-23 20:50:00 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 50.0000 MDR
0x4ac0d868c024be7331c20090a0875306c48c9c8a192b2a818f19b2b140b732f6 Transfer 2023-10-21 21:45:01 0x8a09df2ceff8b89aae7012a8649e2ce95cda0499 IN 0xd02a4c1ad26f84fa912b2f40d841c3a7bb5a2963 100.0000 MDR

 Latest 9 ERC-20 Token Transfer Events

Txn Hash
Block
From
To
Value [Txn Fee]
0x4c8599fa5db502d29d78ad3c85e39ff7160c4775e4e645cd344af13d662eded3 16807914 2 hrs 6 mins ago 0x931cdb4f83672a7803a552414c026b7914bb72ae OUT 0x1fd1259fa8cdc60c6e8c86cfa592ca1b8403dfad 0 BLN 0.000143891192

 Latest 25 blocks (From a total of 353,417 blocks with 47,300.41 BLN in fees)

Block Transaction Gas Used Reward
16738610 31 secs ago 430 19,977,660 (99.89%)
0.16001155598032753 BLN
16738609 33 secs ago 349 19,967,071 (99.84%)
1.368512730518157196 BLN
16738608 35 secs ago 430 19,959,026 (99.80%)
1.119899900678144967 BLN

pragma solidity ^0.4.24;

contract ERC20 {
    uint256 public totalSupply;

    function balanceOf(address who) public view returns (uint256 balance);

    function allowance(address owner, address spender) public view returns (uint256 remaining);

    function transfer(address to, uint256 value) public returns (bool success);

    function approve(address spender, uint256 value) public returns (bool success);

    function transferFrom(address from, address to, uint256 value) public returns (bool success);

    event Transfer(address indexed _from, address indexed _to, uint256 _value);

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

library SafeMath {
    function sub(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a - b;
        assert(b <= a && c <= a);
        return c;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a + b;
        assert(c >= a && c>=b);
        return c;
    }
}

library SafeERC20 {
    function safeTransfer(ERC20 _token, address _to, uint256 _value) internal {
        require(_token.transfer(_to, _value));
    }
}

contract Owned {
    address public owner;

    constructor() public {
        owner = msg.sender;
    }

    modifier onlyOwner {
        require(msg.sender == owner,"O1- Owner only function");
        _;
    }

    function setOwner(address newOwner) onlyOwner public {
        owner = newOwner;
    }
}

contract Pausable is Owned {
    event Pause();
    event Unpause();

    bool public paused = false;

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

    modifier whenPaused() {
        require(paused);
        _;
    }

    function pause() public onlyOwner whenNotPaused {
        paused = true;
        emit Pause();
    }

    function unpause() public onlyOwner whenPaused {
        paused = false;
        emit Unpause();
    }
}

contract AVNrich is Owned, Pausable, ERC20 {
    using SafeMath for uint256;
    using SafeERC20 for ERC20;

    mapping (address => uint256) public balances;
    mapping (address => mapping (address => uint256)) public allowed;
    mapping (address => bool) public frozenAccount;
    mapping (address => bool) public verifyPublisher;
    mapping (address => bool) public verifyWallet;

    struct fStruct { uint256 index; }
    mapping(string => fStruct) private fileHashes;
    string[] private fileIndex;

    string public constant name = "Bullion Share";
    uint8 public constant decimals = 8;
    string public constant symbol = "BLNS";
    uint256 public constant initialSupply = 21000000;
    uint256 public validationPrice = 7 * 10 ** uint(decimals);
    address public validationWallet = address(0);

    constructor() public {
        validationWallet = msg.sender;
        verifyWallet[msg.sender] = true;
        totalSupply = initialSupply * 10 ** uint(decimals);
        balances[msg.sender] = totalSupply;
        emit Transfer(address(0),owner,initialSupply);
    }

    function () public payable {
        revert();
    }

    function transfer(address _to, uint256 _value) public whenNotPaused returns (bool success) {
        require(_to != msg.sender,"T1- Recipient can not be the same as sender");
        require(_to != address(0),"T2- Please check the recipient address");
        require(balances[msg.sender] >= _value,"T3- The balance of sender is too low");
        require(!frozenAccount[msg.sender],"T4- The wallet of sender is frozen");
        require(!frozenAccount[_to],"T5- The wallet of recipient is frozen");

        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);

        emit Transfer(msg.sender, _to, _value);

        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool success) {
        require(_to != address(0),"TF1- Please check the recipient address");
        require(balances[_from] >= _value,"TF2- The balance of sender is too low");
        require(allowed[_from][msg.sender] >= _value,"TF3- The allowance of sender is too low");
        require(!frozenAccount[_from],"TF4- The wallet of sender is frozen");
        require(!frozenAccount[_to],"TF5- The wallet of recipient is frozen");

        balances[_from] = balances[_from].sub(_value);
        balances[_to] = balances[_to].add(_value);

        allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);

        emit Transfer(_from, _to, _value);

        return true;
    }

    function balanceOf(address _owner) public view returns (uint256 balance) {
        return balances[_owner];
    }

    function approve(address _spender, uint256 _value) public whenNotPaused returns (bool success) {
        require((_value == 0) || (allowed[msg.sender][_spender] == 0),"A1- Reset allowance to 0 first");

        allowed[msg.sender][_spender] = _value;

        emit Approval(msg.sender, _spender, _value);

        return true;
    }

    function increaseApproval(address _spender, uint256 _addedValue) public whenNotPaused returns (bool) {
        allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);

        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);

        return true;
    }

    function decreaseApproval(address _spender, uint256 _subtractedValue) public whenNotPaused returns (bool) {
        allowed[msg.sender][_spender] = allowed[msg.sender][_spender].sub(_subtractedValue);

        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);

        return true;
    }

    function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }

    struct TKN { address sender; uint256 value; bytes data; bytes4 sig; }

    function tokenFallback(address _from, uint256 _value, bytes _data) public pure returns (bool) {
        TKN memory tkn;
        tkn.sender = _from;
        tkn.value = _value;
        tkn.data = _data;
        uint32 u = uint32(_data[3]) + (uint32(_data[2]) << 8) + (uint32(_data[1]) << 16) + (uint32(_data[0]) << 24);
        tkn.sig = bytes4(u);
        return true;
    }

    function transferToken(address tokenAddress, uint256 tokens) public onlyOwner {
        ERC20(tokenAddress).safeTransfer(owner,tokens);
    }

    function burn(uint256 _value) public onlyOwner returns (bool) {
        require(_value <= balances[msg.sender],"B1- The balance of burner is too low");

        balances[msg.sender] = balances[msg.sender].sub(_value);
        totalSupply = totalSupply.sub(_value);

        emit Burn(msg.sender, _value);

        emit Transfer(msg.sender, address(0), _value);

        return true;
    }

    function freeze(address _address, bool _state) public onlyOwner returns (bool) {
        frozenAccount[_address] = _state;

        emit Freeze(_address, _state);

        return true;
    }

    function validatePublisher(address Address, bool State, string Publisher) public onlyOwner returns (bool) {
        verifyPublisher[Address] = State;

        emit ValidatePublisher(Address,State,Publisher);

        return true;
    }

    function validateWallet(address Address, bool State, string Wallet) public onlyOwner returns (bool) {
        verifyWallet[Address] = State;

        emit ValidateWallet(Address,State,Wallet);

        return true;
    }

    function validateFile(address To, uint256 Payment, bytes Data, bool cStore, bool eLog) public whenNotPaused returns (bool) {
        require(Payment>=validationPrice,"V1- Insufficient payment provided");
        require(verifyPublisher[msg.sender],"V2- Unverified publisher address");
        require(!frozenAccount[msg.sender],"V3- The wallet of publisher is frozen");
        require(Data.length == 64,"V4- Invalid hash provided");

        if (!verifyWallet[To] || frozenAccount[To]) {
            To = validationWallet;
        }

        uint256 index = 0;
        string memory fileHash = string(Data);

        if (cStore) {
            if (fileIndex.length > 0) {
                require(fileHashes[fileHash].index == 0,"V5- This hash was previously validated");
            }

            fileHashes[fileHash].index = fileIndex.push(fileHash)-1;
            index = fileHashes[fileHash].index;
        }

        if (allowed[To][msg.sender] >= Payment) {
            allowed[To][msg.sender] = allowed[To][msg.sender].sub(Payment);
        } else {
            balances[msg.sender] = balances[msg.sender].sub(Payment);
            balances[To] = balances[To].add(Payment);
        }

        emit Transfer(msg.sender, To, Payment);

        if (eLog) {
            emit ValidateFile(index,fileHash);
        }

        return true;
    }

    function verifyFile(string fileHash) public view returns (bool) {
        if (fileIndex.length == 0) {
            return false;
        }

        bytes memory a = bytes(fileIndex[fileHashes[fileHash].index]);
        bytes memory b = bytes(fileHash);

        if (a.length != b.length) {
            return false;
        }

        for (uint256 i = 0; i < a.length; i ++) {
            if (a[i] != b[i]) {
                return false;
            }
        }

        return true;
    }

    function setPrice(uint256 newPrice) public onlyOwner {
        validationPrice = newPrice;
    }

    function setWallet(address newWallet) public onlyOwner {
        validationWallet = newWallet;
    }

    function listFiles(uint256 startAt, uint256 stopAt) onlyOwner public returns (bool) {
        if (fileIndex.length == 0) {
            return false;
        }

        require(startAt <= fileIndex.length-1,"L1- Please select a valid start");

        if (stopAt > 0) {
            require(stopAt > startAt && stopAt <= fileIndex.length-1,"L2- Please select a valid stop");
        } else {
            stopAt = fileIndex.length-1;
        }

        for (uint256 i = startAt; i <= stopAt; i++) {
            emit LogEvent(i,fileIndex[i]);
        }

        return true;
    }

    event Burn(address indexed burner, uint256 value);
    event Freeze(address target, bool frozen);

    event ValidateFile(uint256 index, string data);
    event ValidatePublisher(address indexed publisherAddress, bool state, string indexed publisherName);
    event ValidateWallet(address indexed walletAddress, bool state, string indexed walletName);

    event LogEvent(uint256 index, string data) anonymous;
}
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