Contract 0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270 16


Contract Overview

Polygon: WMATIC Token
203,940,014.066787043996795818 MATIC

MATIC Value:
$152,098,462.49 (@ $0.75/MATIC)

Txn Hash Method
Value [Txn Fee]
0x16c3c28fb8f0bc96f322578d5b8f38b951b12aed4422428dfbb674fe2587ebeaApprove(pending)2022-09-29 12:06:5738 secs ago0x250fbd34b7e14050b759cfd27bc43a74b1a5d640 IN 0x0d500b1d8e8ef31e21c99d1db9a6444d3adf12700 MATIC(Pending)
0xad9e80b06e80e330df98d617b2dfc552789d9cb4775e39a12c2207f543631959Deposit337123342022-09-29 12:05:152 mins ago0x4c3159f83eb4e6ff6b93efae4229c0b8a4095e65 IN  Polygon: WMATIC Token1,590 MATIC0.001354382869 30.069999986
0x8046828bbfeb64d8c27249d1e0ffa829f255ca3b72fcad587aa34ee46b2136c1Withdraw337123032022-09-29 12:04:093 mins ago0x40cd9efe07a3b399321f39ab40569cc093c63512 IN  Polygon: WMATIC Token0 MATIC0.000913890001 30.000000048
0x2903bcbb716751357dfdeb84c2c8580d9fdb7a6ce8f1482356ab82651c937c81Approve337122822022-09-29 12:03:274 mins ago0x40cd9efe07a3b399321f39ab40569cc093c63512 IN  Polygon: WMATIC Token0 MATIC0.001391910001 30.000000033
0x459862059b1a3f42548db07ba8aae6e6534498b9f1996ee77ab78d1a842ace90Transfer337122402022-09-29 12:01:595 mins ago0x244286696cb3356e966d97d6577f8cfb00a3aa8e IN  Polygon: WMATIC Token0 MATIC0.00107017236.000000023
0x1eb4d52a4dde142775841a9774b1f25ded2ae1b20f170c5d6ab1ed534f9867c7Deposit337122222022-09-29 12:01:236 mins ago0x244286696cb3356e966d97d6577f8cfb00a3aa8e IN  Polygon: WMATIC Token0.5 MATIC0.00162147636.000000021
0x09fb96574c8d4db34cb94d4d9099dbce82e2af16475089c0cef07e502b5a53acApprove337122182022-09-29 12:01:156 mins ago0x4c3159f83eb4e6ff6b93efae4229c0b8a4095e65 IN  Polygon: WMATIC Token0 MATIC0.00139191 30.000000018
0x50180a8f05559e8bc07b2fdd1e9f621e7916b3089ef741bbfa512c1bf032fa7dDeposit337121812022-09-29 11:59:577 mins ago0x47130b206b12789af86eedce89242546ffcbf55c IN  Polygon: WMATIC Token50 MATIC0.00083823 30.000000016
0x47f11478b101e0365861c869772a54e631f52ed41d43befc32e4ad678d25b7f8Deposit337121782022-09-29 11:59:517 mins ago0xaa4b6b4c7417248df49dc484d5eb9a4377a4c7e1 IN  Polygon: WMATIC Token0.69 MATIC0.00135123 30.000000016
0x3902ac3b6ebf22588438fd4bfc86ef140ce150fe8cfbf17f2ac3e25449aa8439Withdraw337121612022-09-29 11:59:178 mins ago0x167f897440cfd5227f22349779841f83ddda126a IN  Polygon: WMATIC Token0 MATIC0.00091389 30.000000016
0x7f5f1bebb64705057552fb8364f231240f79523da36db1a993cb2a5b72d0b9b9Transfer337121162022-09-29 11:57:439 mins ago0x714b831eb02fe854283219b2b9f1c6951f46dcb9 IN  Polygon: WMATIC Token0 MATIC0.00154881 30.000000016
0x6ba89742d606a153ea45f70e2c3fc64f343e4b9e9b3a7da8cef2f6455dc71b4aWithdraw337120912022-09-29 11:56:5310 mins ago0x8738a7e04603c6ff2cbe11064c2ca3a675978e28 IN  Polygon: WMATIC Token0 MATIC0.00094039281 30.870000021
0x29d730303edb9b66be500fae80b153b015392c6df32e3be922f3941db4dce8c4Approve337120712022-09-29 11:56:1311 mins ago0x3d2f5127c0fbd4ba0d2823ef26245280cd4da24d IN  Polygon: WMATIC Token0 MATIC0.00143505921 30.93
0x0119d6d1409e3821cd18361c7dd6914737f1d165d17a7a710dfa63d1096179c5Approve337120382022-09-29 11:55:0312 mins ago0x27e32ef9576dc05f4d08d978106fc16351d4cb0c IN  Polygon: WMATIC Token0 MATIC0.00138830183 30.070000001
0x2ccb84e07f06a3c9a399c67c591ebed259efb24114899bbe6490669863ac1828Deposit337119992022-09-29 11:53:4113 mins ago0x0a772b2738d02c66cce668cc371b29cc8e39231d IN  Polygon: WMATIC Token8.9971685 MATIC0.001544906334.300000005
0x49d57d21d933962f8445d7c51374d9f4593af7b5ec7b361f3a7d1101fe763660Transfer337119592022-09-29 11:52:2015 mins ago0x714b831eb02fe854283219b2b9f1c6951f46dcb9 IN  Polygon: WMATIC Token0 MATIC0.00154881 30.000000019
0x512fe1027f572ee4a4a9f576bbc2f79d5c9998b9c2e074346c946a119cf9871dDeposit337119412022-09-29 11:51:4415 mins ago0x47130b206b12789af86eedce89242546ffcbf55c IN  Polygon: WMATIC Token41.222748421188888 MATIC0.00083823 30.00000002
0x96b90d1c4bfc7831a8646b3b04fb89e25c8468b62de56b839be2b7a292b794c2Approve337119392022-09-29 11:51:4015 mins ago0xf9f76babd25e17c42c8a472c0a0939ee1f13ed7a IN  Polygon: WMATIC Token0 MATIC0.00139191 30.000000021
0x7c847465e12206a41c4ea03639d76ea7a11067de3654183e091527566b6ae9d8Deposit337119042022-09-29 11:50:2617 mins ago0x93d52a37867a6c183177172a5d28aae13c2321b1 IN  Polygon: WMATIC Token0.69 MATIC0.000853737255 30.555000024
0x1e7fc5db426d975b36fcb2ced6a2abf6617d08f87f7180b4d3fae2ecc616e2fbApprove337118992022-09-29 11:50:1617 mins ago0x6ace931e33812d17e15df0b418828681a0f08f18 IN  Polygon: WMATIC Token0 MATIC0.000802649295 30.555000019
0x9146e2289da08a378b57ab5b93fc9d2d51ee5871b5d098f5478d4cddc87dd1c8Transfer337118972022-09-29 11:50:1217 mins ago0x714b831eb02fe854283219b2b9f1c6951f46dcb9 IN  Polygon: WMATIC Token0 MATIC0.001577462985 30.555000019
0x648598944a093e8796b5995f3871baf7ba0693c2430bf91fcd128f6157fd9f4fDeposit337118932022-09-29 11:50:0417 mins ago0x93d52a37867a6c183177172a5d28aae13c2321b1 IN  Polygon: WMATIC Token0.69 MATIC0.001435803125 31.877691996
0x132130749a0d3afbc2cad74d6905d1acc20f79847ac87f278b7660f2bf8a83bbDeposit337118922022-09-29 11:50:0217 mins ago0x47130b206b12789af86eedce89242546ffcbf55c IN  Polygon: WMATIC Token115 MATIC0.001435803125 31.877691997
0xa646d8630c18d6fb601482a0a3d176629fe720a00fc1129b9bdf6d404c6770b3Approve337118872022-09-29 11:49:5217 mins ago0x3636f87a5a81cf2de48a1d0dea860065bb96a60c IN  Polygon: WMATIC Token0 MATIC0.00146150550131.500000026
0xe32981d87a910fb3e231ed414ec39bef75a0006bf44fb2abe4fbebf80ec4b92fApprove337118852022-09-29 11:49:4817 mins ago0x83344a6c443f8b598bb67729c78f98fb33852a73 IN  Polygon: WMATIC Token0 MATIC0.00143041951 30.83
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Polygon combines the best of Ethereum and sovereign blockchains into a full-fledged multi-chain system.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x70abf9fa1055564bbb8d8169ca726a7a74a7838e0cebafa809b928f67b9143d7337123342022-09-29 12:05:152 mins ago Polygon: WMATIC Token QuickSwap: Router95.308147954657007196 MATIC
0x5b887727b9e777d1dfc69965dbfef73802bbd24e81dfaf03fdf90bb697232532337123332022-09-29 12:05:132 mins ago Polygon: WMATIC Token QuickSwap: Router15.920865698286979781 MATIC
0x1fd1f5357dca533b1653cb1ccf776fdc6ba7d5228ac26872379c57971aa4fb3d337123322022-09-29 12:05:112 mins ago QuickSwap: Router Polygon: WMATIC Token3.3898 MATIC
0x996a074ec4c64960eace14d06619a049a9e5211d4fceaada1e66ba910ea4600a337123312022-09-29 12:05:092 mins ago 0x13927a60c7bf4d3d00e3c1593e0ec713e35d2106 Polygon: WMATIC Token288.45375 MATIC
0x6e99b2ae2042efa1e439e56ab17b13256910568114d6f241283afb321d2b054e337123302022-09-29 12:05:072 mins ago Polygon: WMATIC Token QuickSwap: Router2.795133527075460966 MATIC
0x02c93b9fdf0772c0592a1737f300116e40393d4432ab19f11d9968a5f205c16d337123282022-09-29 12:05:032 mins ago Polygon: WMATIC Token QuickSwap: Router27.648922485388037716 MATIC
0xa47c4fa651e501ed60abd6f78d197481951b54b2d4761d2117b8d6a5cb6dba77337123262022-09-29 12:04:592 mins ago QuickSwap: Router Polygon: WMATIC Token0.939866301974872374 MATIC
0xf33cdb675c059227375c2848c2dd4c361de91a4fe065d671c55dc2b5fa756c42337123262022-09-29 12:04:592 mins ago Polygon: WMATIC Token 0x: Exchange Proxy Flash Wallet1.982136861962870292 MATIC
0x16b1a96e3c63aea38ed92f31a52f88c33c267ded0198c88a64491778295fc289337123242022-09-29 12:04:552 mins ago Polygon: WMATIC Token QuickSwap: Router32.970318882050511641 MATIC
0xd7bfe0e39ac6d11adbeb5a573a49c9951e8bbc20e28d520dd079c0388b091af7337123232022-09-29 12:04:532 mins ago Polygon: WMATIC Token 0x4fd9fef216da72b1bc2ddf8924a036f3d780dcdf0.17 MATIC
0xc52c93fc3a3f7d405c91245088b96c6a001dd1176781f175afa3a3495c57bb19337123222022-09-29 12:04:512 mins ago Polygon: WMATIC Token QuickSwap: Router0.085180540749521471 MATIC
0x8ac083da5fcfd2aadf2b43681eb243f6be9aa50ce22683e7415ffcd6cd993909337123212022-09-29 12:04:492 mins ago QuickSwap: Router Polygon: WMATIC Token0.03 MATIC
0x6c7ecaccc4b66b4ff66aca0e74dd288d0f04e82a66109de59b69009f5cceb666337123202022-09-29 12:04:472 mins ago QuickSwap: Router Polygon: WMATIC Token1.342665154235958689 MATIC
0x03de63817c1527ceaeb55e267b858df92cf4f0f34555a175e0b0a692ddf4a300337123202022-09-29 12:04:472 mins ago QuickSwap: Router Polygon: WMATIC Token49.99755 MATIC
0x3cf0dd6389f13d03867ea1cf362c1c321bbebc2c642ca32875cb4e2eb40058e2337123202022-09-29 12:04:472 mins ago 0x13927a60c7bf4d3d00e3c1593e0ec713e35d2106 Polygon: WMATIC Token3 MATIC
0xc521d21b8269d642ba754622762c69f0ee1655359155d45370656922fb26c53a337123182022-09-29 12:04:392 mins ago Polygon: WMATIC Token QuickSwap: Router13.759471475604174109 MATIC
0xe94f555d7601445a7497c746a3427220254cb35fda6159b9c015d3f3340c1743337123172022-09-29 12:04:372 mins ago QuickSwap: Router Polygon: WMATIC Token1,220 MATIC
0x7410feb879182cf086a46ec6517f59bac67b4bbb26252ac42386c5612ebe70f0337123162022-09-29 12:04:353 mins ago Uniswap V3: Positions NFT Polygon: WMATIC Token1.457693559365438909 MATIC
0xdf20d1384740ea690983c04683f01cb08ccfed46c91a54493fd91deb1ffab11c337123142022-09-29 12:04:313 mins ago Polygon: WMATIC Token 0x13927a60c7bf4d3d00e3c1593e0ec713e35d210632.379615035659317037 MATIC
0xd31438c737ded82f25d67727f0eb14494c6ec61a337ee172c3f696425f099d80337123142022-09-29 12:04:313 mins ago 0x8ef88e4c7cfbbac1c163f7eddd4b578792201de6 Polygon: WMATIC Token5.99944111112954495 MATIC
0xebcda2fd148b58f5dd57ab55c7387ea5979f2f94068dfc926cacc3864b0f9ff0337123122022-09-29 12:04:273 mins ago Polygon: WMATIC TokenUniswap V3: Router 23.575486690393376966 MATIC
0x8a892fe97af4a084cf8f788cbe4883d53c5b81563a67d4c33fc5eb421e04fee3337123102022-09-29 12:04:233 mins ago Paraswap v5: Augustus Swapper Polygon: WMATIC Token80.29125 MATIC
0x3d4004b83e30789ff20e9acb7b5bd8eaaa3d6b95ffd6221b37aafc5cf2a7f23f337123092022-09-29 12:04:213 mins ago QuickSwap: Router Polygon: WMATIC Token16.180492511647265209 MATIC
0x6b0084473d53f0a97856ea1efa073ff88f8771b56838611372fc33de5dfae04b337123092022-09-29 12:04:213 mins ago Polygon: WMATIC Token QuickSwap: Router27.197134657154538763 MATIC
0x41debecbf7cb2af8b291192d94727fded5a862d87410bec7f02626ccdbb82a7d337123092022-09-29 12:04:213 mins ago Polygon: WMATIC Token QuickSwap: Router7.131100787580137412 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:

Compiler Version

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, MIT license
 *Submitted for verification at on 2021-06-09

// DeFi multi-chain yield farms deployer & DEXs aggregator.

// Copyright (C) 2015, 2016, 2017 Dapphub

// 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
// 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 <>.

pragma solidity ^0.4.18;

contract WMATIC {
    string public name     = "Wrapped Matic";
    string public symbol   = "WMATIC";
    uint8  public decimals = 18;

    event  Approval(address indexed src, address indexed guy, uint wad);
    event  Transfer(address indexed src, address indexed dst, uint wad);
    event  Deposit(address indexed dst, uint wad);
    event  Withdrawal(address indexed src, uint wad);

    mapping (address => uint)                       public  balanceOf;
    mapping (address => mapping (address => uint))  public  allowance;

    function() public payable {
    function deposit() public payable {
        balanceOf[msg.sender] += msg.value;
        Deposit(msg.sender, msg.value);
    function withdraw(uint wad) public {
        require(balanceOf[msg.sender] >= wad);
        balanceOf[msg.sender] -= wad;
        Withdrawal(msg.sender, wad);

    function totalSupply() public view returns (uint) {
        return this.balance;

    function approve(address guy, uint wad) public returns (bool) {
        allowance[msg.sender][guy] = wad;
        Approval(msg.sender, guy, wad);
        return true;

    function transfer(address dst, uint wad) public returns (bool) {
        return transferFrom(msg.sender, dst, wad);

    function transferFrom(address src, address dst, uint wad)
        returns (bool)
        require(balanceOf[src] >= wad);

        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
            require(allowance[src][msg.sender] >= wad);
            allowance[src][msg.sender] -= wad;

        balanceOf[src] -= wad;
        balanceOf[dst] += wad;

        Transfer(src, dst, wad);

        return true;

                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.


  The GNU General Public License is a free, copyleft license for
software and other kinds of works.

  The licenses for most software and other practical works are designed
to take away your freedom to share and change the works.  By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users.  We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors.  You can apply it to
your programs, too.

  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.

  To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights.  Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.

  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received.  You must make sure that they, too, receive
or can get the source code.  And you must show them these terms so they
know their rights.

  Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.

  For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software.  For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
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  Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so.  This is fundamentally incompatible with the aim of
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pattern of such abuse occurs in the area of products for individuals to
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  Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
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patents cannot be used to render the program non-free.

  The precise terms and conditions for copying, distribution and
modification follow.

                       TERMS AND CONDITIONS

  0. Definitions.

  "This License" refers to version 3 of the GNU General Public License.

  "Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.

  "The Program" refers to any copyrightable work licensed under this
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  A "covered work" means either the unmodified Program or a work based
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  An interactive user interface displays "Appropriate Legal Notices"
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extent that warranties are provided), that licensees may convey the
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the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.

  1. Source Code.

  The "source code" for a work means the preferred form of the work
for making modifications to it.  "Object code" means any non-source
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than the work as a whole, that (a) is included in the normal form of
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  The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding

  The Corresponding Source for a work in source code form is that
same work.

  2. Basic Permissions.

  All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met.  This License explicitly affirms your unlimited
permission to run the unmodified Program.  The output from running a
covered work is covered by this License only if the output, given its
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rights of fair use or other equivalent, as provided by copyright law.

  You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
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with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
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for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.

  Conveying under any other circumstances is permitted solely under
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  3. Protecting Users' Legal Rights From Anti-Circumvention Law.

  No covered work shall be deemed part of an effective technological
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  You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
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keep intact all notices stating that this License and any
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keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.

  You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.

  5. Conveying Modified Source Versions.

  You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:

    a) The work must carry prominent notices stating that you modified
    it, and giving a relevant date.

    b) The work must carry prominent notices stating that it is
    released under this License and any conditions added under section
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    "keep intact all notices".

    c) You must license the entire work, as a whole, under this
    License to anyone who comes into possession of a copy.  This
    License will therefore apply, along with any applicable section 7
    additional terms, to the whole of the work, and all its parts,
    regardless of how they are packaged.  This License gives no
    permission to license the work in any other way, but it does not
    invalidate such permission if you have separately received it.

    d) If the work has interactive user interfaces, each must display
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  A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit.  Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.

  6. Conveying Non-Source Forms.

  You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:

    a) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by the
    Corresponding Source fixed on a durable physical medium
    customarily used for software interchange.

    b) Convey the object code in, or embodied in, a physical product
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    written offer, valid for at least three years and valid for as
    long as you offer spare parts or customer support for that product
    model, to give anyone who possesses the object code either (1) a
    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.

    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
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    d) Convey the object code by offering access from a designated
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    that supports equivalent copying facilities, provided you maintain
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    e) Convey the object code using peer-to-peer transmission, provided
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  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.

  A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
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  "Installation Information" for a User Product means any methods,
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modification has been made.

  If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information.  But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).

  The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed.  Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.

  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.

  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law.  If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.

  When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it.  (Additional permissions may be written to require their own
removal in certain cases when you modify the work.)  You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.

  Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:

    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or

    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or

    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
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    d) Limiting the use for publicity purposes of names of licensors or
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    e) Declining to grant rights under trademark law for use of some
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  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term.  If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.

  If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.

  Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.

  8. Termination.

  You may not propagate or modify a covered work except as expressly
provided under this License.  Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).

  However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.

  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.

  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.

  11. Patents.

  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version.  For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.

  In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement).  To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.

  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.

  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.

  Later license versions may give you additional or different
permissions.  However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.

  15. Disclaimer of Warranty.


  16. Limitation of Liability.


  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    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
    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 <>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read


Contract Security Audit

Contract ABI



Deployed ByteCode Sourcemap


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