Contract 0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270 8


Contract Overview

Polygon: WMATIC Token
354,685,363.903408551640721917 MATIC

MATIC Value:
$382,705,507.65 (@ $1.08/MATIC)

Txn Hash Method
Value [Txn Fee]
0x2a0abac22640f55ba0b2fc7d0583502bff192969a3cb44fa0b345616af26883aWithdraw193693562021-09-22 2:22:4613 secs ago0x45fe2d78c7b7b5a6981b1934cc9f2903f8a8e4f5 IN  Polygon: WMATIC Token0 MATIC0.000060825
0xc3d3b90dfada5fde5b5025e191a541edfea104e1a81a1df05f0f3252e0c6f653Withdraw193693552021-09-22 2:22:4415 secs ago0xc8c7f761d5970b118de93c12bf4f51f0766b5625 IN  Polygon: WMATIC Token0 MATIC0.000104475
0x7ba04df01e05e39f765bcb32ab6ce8eae0ea4d05bbeb669773671212e0baa989Deposit193693512021-09-22 2:22:3623 secs ago0xa078a5f60216941b8b7e2a688b09cf3e042cf227 IN  Polygon: WMATIC Token5.6 MATIC0.000055495021
0x2c12b463891e655758920e9062d2645e5991f30aaf358590ef876f88213a1cacWithdraw193693322021-09-22 2:21:541 min ago0x8de5e26bad5ea1350f3c4ddd22b73b109d08b366 IN  Polygon: WMATIC Token0 MATIC0.000029959253
0x33fbdfc4fa695e489dcd97fde8da8d95f07e2d7fda35cafe87333fb2506b6481Approve193693292021-09-22 2:21:481 min ago0x3948511f660c84c9b171a870697081228918c4ca IN  Polygon: WMATIC Token0 MATIC0.000057165749
0x8a65178f42b6de017c01015b2498631d21c572813403ba4574540b42185c07cdWithdraw193693282021-09-22 2:21:461 min ago0xf514fd8b423db68dc41237ee4b038e0f70e3157e IN  Polygon: WMATIC Token0 MATIC0.000040526
0xad1dfb050c8ea0538ebd1bcc1af1ea3bfd79682a2feb405103ab13a703e00ba8Approve193693262021-09-22 2:21:421 min ago0xc7272b5eeaf3b5ad69ea4887d4c01245a14cc6ea IN  Polygon: WMATIC Token0 MATIC0.00005150067
0xa1d60331435e47f95808f48ad4dc9c4dd82ad3e975e5f3bb80e04a7cbbeeb3a5Approve193693222021-09-22 2:21:341 min ago0xe112dbd4dd578c24f06c309b7d2d1f46ad148fe1 IN  Polygon: WMATIC Token0 MATIC0.0004118988
0x2933dd02c8c90adbf826d8b4e8be23fe13483f02c38ae33a77e77cfd5abb3d62Withdraw193693212021-09-22 2:21:321 min ago0x9823581ab7bcc3adf3b57bd5ba3c8cdf78c034d0 IN  Polygon: WMATIC Token0 MATIC0.000041862
0xe2ddeafd55c1917af465fadc9db46b7303fac963d05790a48b6964a411d64138Approve193693202021-09-22 2:21:301 min ago0xaf9619f28e5b1d9da2e2d10e248f9db5aba6bf9e IN  Polygon: WMATIC Token0 MATIC0.000068598899
0xa8dfba8ed1a9af9595abe9f55c8c105d636c68018af3a448c8c300fb192a37d4Approve193693182021-09-22 2:21:261 min ago0x6aa7d5110a4b4ca0e19cd19eaba92a35458a0766 IN  Polygon: WMATIC Token0 MATIC0.00046385
0xc7bb89064d3542614d572b9a709dd03037a6bc1b584fb816973413608c5ad767Withdraw193693162021-09-22 2:21:221 min ago0xd36b3d2db91666ae95fd71d2ba364e1fc9b4ee1f IN  Polygon: WMATIC Token0 MATIC0.00017993544
0xd663e1385b026e56f48c33d688579f60a4cc1dc3f6efe0fc179a8c973ab4bdecWithdraw193693072021-09-22 2:21:041 min ago0x2b9bef970b3da5b191d09bd97dfd5d1ed3a1a086 IN  Polygon: WMATIC Token0 MATIC0.000141841
0x4ad480635f627ac11a6eb8631dd9c4b04e475c1b21795e1fc9897a5de9d09688Transfer193692932021-09-22 2:20:362 mins ago0xc7cdd55f3f9003f68800944ed24175e28769b670 IN  Polygon: WMATIC Token0 MATIC0.00004069593
0xbbfa1da6e3a6ab17ace0983970280c1f846672ec0aa0fc8a11ff94ee65fbd488Withdraw193692892021-09-22 2:20:282 mins ago0xb40b0bc5bdb31bb7a01efb3ef93ef8d197356fe7 IN  Polygon: WMATIC Token0 MATIC0.00017993544
0x0f058c52e12d387e0502b67da4c31d5763bd8a3e7b41603a5ae017735471870cApprove193692802021-09-22 2:20:102 mins ago0xda35c8e464889ba2cb91d2e85c608a99d262d5db IN  Polygon: WMATIC Token0 MATIC0.006541977
0xb9e2f7f8033f262fe6e36da2bcf8f6aa602ed2bdbad6a7e3c26cb7c520c75deaDeposit193692752021-09-22 2:19:563 mins ago0xd2870cfd2746046ca43971e49d2fb338549ed043 IN  Polygon: WMATIC Token50 MATIC0.00045041
0x7e20985e8dc2ca1d5425e3f9e73f7763bc942b979e7150ed672cbe3cfce751d0Withdraw193692722021-09-22 2:19:503 mins ago0xc7c5447132c5c1f4c98e6b78c4fd024eebf8d13c IN  Polygon: WMATIC Token0 MATIC0.00002249193
0xe7e53b35505d54a1af5aaa7da098bf293a73914623053812081c8d47b7f68b4cWithdraw193692722021-09-22 2:19:503 mins ago0x8ece8d68a894c370d28716dec8e6b02b5a551c86 IN  Polygon: WMATIC Token0 MATIC0.00060789
0x84dcf86ec43b5ae09555af95592154bcb35802091348fed592c908049a8bb68bWithdraw193692682021-09-22 2:19:423 mins ago0xdce1f6d9162eb152053226f595995c22b39a6b53 IN  Polygon: WMATIC Token0 MATIC0.00002249193
0x15e5ceeb4e4088465b7008f22e31f846b6859980d56b531f20f0de53791d5985Withdraw193692682021-09-22 2:19:423 mins ago0xc8c7f761d5970b118de93c12bf4f51f0766b5625 IN  Polygon: WMATIC Token0 MATIC0.002947887
0x308f285c6d467bec0d8e89c34759bd452b063ca9a8196cb36a4a3507dba56da6Withdraw193692392021-09-22 2:18:444 mins ago0x95c00d2cf32edba4cfec2ef6086829942aad70a0 IN  Polygon: WMATIC Token0 MATIC0.00002249193
0x0c3ecfc35b35c2ec10a3ea48f3de734157177c36333963872442288277f33ac9Withdraw193692352021-09-22 2:18:364 mins ago0xaa3401a440f70d7294041aceb4661d150b3b3aff IN  Polygon: WMATIC Token0 MATIC0.000040526
0x93bf7f3914ceb06acd89bba715f84c54f18bf4d35e503e408399639c62382480Deposit193692222021-09-22 2:18:104 mins ago0x663cb026a111c18eb25c85b18a58ac27dd4238b8 IN  Polygon: WMATIC Token215 MATIC0.00004999551
0xc9c19ee2920655b5b4608ab5a9a0490ca3f1d18c7f6b62477d6c8e5361241a50Approve193692162021-09-22 2:17:585 mins ago0xf36ca3c006364389956e81bfbcd4e9aea215d735 IN  Polygon: WMATIC Token0 MATIC0.00092794
[ Download CSV Export 


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
0x6a0af1a5db8d4eec2f5ad09f119a982cf4fa6a2e6b35a3186d6700d35e354dc1193693492021-09-22 2:22:3227 secs ago QuickSwap: Router Polygon: WMATIC Token49.874127134627405994 MATIC
0x0a3b2ea64cb9e9982cd852869bf264c5bf51dfb39e4e9a4a1260a4d236f60673193693492021-09-22 2:22:3227 secs ago 0x11431a89893025d2a48dca4eddc396f8c8117187 Polygon: WMATIC Token1 MATIC
0x02dbbc6153e00315564f607cdd8d8c9873b8877ab95e55cbf02c20e9d395f651193693462021-09-22 2:22:2633 secs ago Polygon: WMATIC Token QuickSwap: Router59.44031673076745929 MATIC
0x11c4c43e8300945f7c93d9c26b5e121664d31398eadfdd9c22f5cbd4cc95507d193693462021-09-22 2:22:2633 secs ago Polygon: WMATIC Token QuickSwap: Router4.451474595355443734 MATIC
0xaa346a74ba7824c7b3c76c6e2ecc12f84119e88fa5bfc3736afce261520eb393193693452021-09-22 2:22:2435 secs ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f49892.459834661186080852 MATIC
0x4930d814424a16af71499b5c4f3a1024c7c0d2d0f92d435164623052007c1883193693452021-09-22 2:22:2435 secs ago 0x11431a89893025d2a48dca4eddc396f8c8117187 Polygon: WMATIC Token50 MATIC
0x3ebebc536a9d1c3e4cfae29cf2d5efb77e481c0cb0759099db56cba9a59faeda193693452021-09-22 2:22:2435 secs ago SushiSwap: SushiV2Router02 Polygon: WMATIC Token0.730763286953471115 MATIC
0x531c464b15d8c6059b1237290150f4bed5848cc65394293d532f2d78403c89b9193693452021-09-22 2:22:2435 secs ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f4980.980453033468103339 MATIC
0xe4f04f8481f348725d81f0bb7613200a8745636dfde7c375cc61161cc58c8b9e193693432021-09-22 2:22:1643 secs ago QuickSwap: Router Polygon: WMATIC Token0.01 MATIC
0x4a5b18e1161dd380a149a21e4e2dc45b8cd05d6acf1b24b61dfdb697b1353cd4193693432021-09-22 2:22:1643 secs ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f49899.43019760850087728 MATIC
0x3abb2a9d24c02751b5ece77dcaf65710b10b87bf0684c337eaa558c648bf7b4f193693432021-09-22 2:22:1643 secs ago Polygon: WMATIC Token 0x11431a89893025d2a48dca4eddc396f8c811718778.855569056247299137 MATIC
0x25d143c0a0e7096c581e01ec9bb4514dba4c580ad3fc83a895b790105af810f6193693422021-09-22 2:22:1445 secs ago 0xbeadf48d62acc944a06eeae0a9054a90e5a7dc97 Polygon: WMATIC Token92 MATIC
0x75f4ae6acf325b97b4c8adf8b9bca63af7be5b7ff333335d621f3a3a2065edc0193693422021-09-22 2:22:1445 secs ago Polygon: WMATIC Token 0xaaa3477c6b326e2e416af7506a30f4519bc9960f0.000160708931624876 MATIC
0x75f4ae6acf325b97b4c8adf8b9bca63af7be5b7ff333335d621f3a3a2065edc0193693422021-09-22 2:22:1445 secs ago 0xaaa3477c6b326e2e416af7506a30f4519bc9960f Polygon: WMATIC Token372 MATIC
0xe422a19e021c5575c6fe585d2fe7de5fef9b8c8577fb681c5d1a7372efb0764a193693422021-09-22 2:22:1445 secs ago 0xbeadf48d62acc944a06eeae0a9054a90e5a7dc97 Polygon: WMATIC Token885.999 MATIC
0x43dc3be543e68e640f95619972d3913e4589bfeb54cf9e19796af72fdbea4180193693422021-09-22 2:22:1445 secs ago SushiSwap: SushiV2Router02 Polygon: WMATIC Token0.18500336378568889 MATIC
0x5e82663e0dce94fc173880120823f9b0d5100f1fbf05c7a85636112922d7cd08193693422021-09-22 2:22:1445 secs ago 0x11431a89893025d2a48dca4eddc396f8c8117187 Polygon: WMATIC Token1 MATIC
0x418425b1dc229abe487b7e4d820a1999ab92b3831619c3619fb51894dffc8e6a193693412021-09-22 2:22:1247 secs ago Polygon: WMATIC Token QuickSwap: Router2.76980146458929553 MATIC
0x14053c1b4bdf5203280796cf4a0fe0cd187ba0cfe88740f2314967cf52988564193693412021-09-22 2:22:1247 secs ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token600 MATIC
0x4c086c3c2b9c3dd42d5f8d52c8fa3f7858c7c473d2f19c3c045bda355a240124193693412021-09-22 2:22:1247 secs ago QuickSwap: Router Polygon: WMATIC Token102.908146935132471551 MATIC
0xc04e015fcd0c1d2f52f37dd3824d2434f0a28c8bf5518231acb956175b5884a8193693412021-09-22 2:22:1247 secs ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f49830.789741135948710961 MATIC
0x323d4c5670150a70e257e582c375be1addd735ff423c74be6ec6ee25d08fa4af193693402021-09-22 2:22:1049 secs ago SushiSwap: SushiV2Router02 Polygon: WMATIC Token0.02 MATIC
0x9c7577601a14da2e0ce0425429f0a4de5107073987d6ce8ef85ffbe2027e18df193693402021-09-22 2:22:1049 secs ago Polygon: WMATIC Token SushiSwap: SushiV2Router0219.117063536944909071 MATIC
0x4ce166de149b0bd113a64742bd49c5e4396e4391cde6dc1dd00d5faac4752a12193693402021-09-22 2:22:1049 secs ago Wault Finance: WS Poly Router Polygon: WMATIC Token50.02493779962254415 MATIC
0xe5486ac2630ebc6de7ae6207919d360a457dc0211835485bc88f96c04b6e6941193693402021-09-22 2:22:1049 secs ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f4980.980244873626590011 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,
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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
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  To protect your rights, we need to prevent others from denying you
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  Developers that use the GNU GPL protect your rights with two steps:
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  Some devices are designed to deny users access to install or run
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                       TERMS AND CONDITIONS

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  4. Conveying Verbatim Copies.

  You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
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
    7.  This requirement modifies the requirement in section 4 to
    "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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    work need not make them do so.

  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
    (including a physical distribution medium), accompanied by a
    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
    only if you received the object code with such an offer, in accord
    with subsection 6b.

    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
    Corresponding Source in the same way through the same place at no
    further charge.  You need not require recipients to copy the
    Corresponding Source along with the object code.  If the place to
    copy the object code is a network server, the Corresponding Source
    may be on a different server (operated by you or a third party)
    that supports equivalent copying facilities, provided you maintain
    clear directions next to the object code saying where to find the
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    Corresponding Source, you remain obligated to ensure that it is
    available for as long as needed to satisfy these requirements.

    e) Convey the object code using peer-to-peer transmission, provided
    you inform other peers where the object code and Corresponding
    Source of the work are being offered to the general public at no
    charge under subsection 6d.

  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
into a dwelling.  In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage.  For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product.  A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.

  "Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source.  The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
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
    reasonable ways as different from the original version; or

    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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    f) Requiring indemnification of licensors and authors of that
    material by anyone who conveys the material (or modified versions of
    it) with contractual assumptions of liability to the recipient, for
    any liability that these contractual assumptions directly impose on
    those licensors and authors.

  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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