Contract 0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270 17


Contract Overview

Polygon: WMATIC Token
151,586,984.219590850352273577 MATIC

MATIC Value:
$140,142,166.91 (@ $0.92/MATIC)

Txn Hash Method
Value [Txn Fee]
0x5b43d82831dc3aa5aab9f3b04685665fd16c43e6cb6be1c83f72b59be7bab3c3Deposit366065652022-12-09 5:48:4444 secs ago0x4e61548d94c8649ebfc2f5f54d2272fcbc687bf2 IN  Polygon: WMATIC Token0.004 MATIC0.001054757522 37.749455
0xcbc7076e0430b9ad627eefdb5e599cb26778033e6f5bf1fef84d5596d2d3b121Deposit366065602022-12-09 5:48:241 min ago0x6e6a02f43d3274397dd8df486e770a5032e7ecd3 IN  Polygon: WMATIC Token0.022 MATIC0.001655871674 36.76365254
0xdd68afadd0491501624fe814a30d1042a817e56565db136fb295debfd480b99aApprove366065592022-12-09 5:48:201 min ago0x0a9c1f37749da839d998957e0062367867952094 IN  Polygon: WMATIC Token0 MATIC0.001677996528 36.166056616
0xa59b7cdfb4ab11da4480d9153abf23083bbcbb482da4ca5f787e82e481b2a12aDeposit366065582022-12-09 5:48:161 min ago0x5525e6fbfb80fa70932c130ee1550d364fee264f IN  Polygon: WMATIC Token1 MATIC0.001672590803 37.134850551
0xe4f192f9a3a416512a0054f6d71274ba1aaf1d3d1771593408bf29a19cafe025Deposit366065562022-12-09 5:48:081 min ago0x9ce615a6f8c98a7e6b92c6536fa7157f14769d40 IN  Polygon: WMATIC Token0.05 MATIC0.000995136546 35.615638171
0x82dba505db17fa7dd6e1906c3eb2e3ce1644927ae059340406bb71d9433b27fdDeposit366065562022-12-09 5:48:081 min ago0x674f62b678974bae9dec3d086ce1a8490d2447e5 IN  Polygon: WMATIC Token0.004 MATIC0.001012251899 36.228191518
0x7d6e31852a588d73471e03c672dc41e2d301995066b872391e2677fc961b55acApprove366065452022-12-09 5:47:242 mins ago0xbd90f0243173e91385224a8117212d17c2e9e494 IN  Polygon: WMATIC Token0 MATIC0.001689287433 36.646363831
0xc3d2ee10ca1ff2705f413fa83a294c3af4a41f7df34d459456d4b66fda6f7964Approve366065352022-12-09 5:46:442 mins ago0xf621b92424b3e26bf2c438b26e07e624522f8268 IN  Polygon: WMATIC Token0 MATIC0.001549243718 33.391032138
0xd5b2b7a7f1f1b0273bde1c3b1c449bf6f0734b085a7754276172111277231e1aApprove366065322022-12-09 5:46:322 mins ago0x6e6b2d4aa0efde6515ec49d52f1634cf58c529ff IN  Polygon: WMATIC Token0 MATIC0.001448068822 31.210397717
0x6c04198de9506dee04731c6a1ddb10ffc923df3147a1b9b0010fc0d424c05bd1Deposit366065322022-12-09 5:46:322 mins ago0x248633b59e752b23f5a754d2c37afb6ed7040676 IN  Polygon: WMATIC Token0.01 MATIC0.001405747523 31.210397717
0x56452a08b7cc9019f2808fb5f83f84fec49224b8ed7552b56da2a5363bf49f3dApprove366065122022-12-09 5:45:383 mins ago0xbc772dd9ad31fe709dffb420afab418593289613 IN  Polygon: WMATIC Token0 MATIC0.001447408047 31.196155952
0x744ee82cf028f302348b1edffab6c99d4e09fd251af79e4de7c85b9291e0944bWithdraw366065082022-12-09 5:45:303 mins ago0x5525e6fbfb80fa70932c130ee1550d364fee264f IN  Polygon: WMATIC Token0 MATIC0.000937628295 30.779250081
0xb48c1ea040a5e28c29f17682a1c1003eb07237b2d6045496103cc802c22f81f1Approve366064912022-12-09 5:44:564 mins ago0x89316291aba44042001b871ccd4d685aac0a0cd5 IN  Polygon: WMATIC Token0 MATIC0.000748000962 31.02065122
0xbf01e96eb3e992a1aac4cabab0f8499c2c02f01fe2041aeb3c0bad4690d55c48Withdraw366064822022-12-09 5:44:384 mins ago0x8dbd268e96530045d9ad3c95333cc73b2f03780f IN  Polygon: WMATIC Token0 MATIC0.000977252708 32.079989117
0x33ac0cfa40b7dea32428b55aefeb684234fb83400f05160b11877d2c95ac4013Deposit366064772022-12-09 5:44:285 mins ago0x60d0285329038bef25ad23c6f1a2a9b4e7f70654 IN  Polygon: WMATIC Token0.827608707805657 MATIC0.001525915414 33.878364482
0x93c2661767dc7c71d4c55a7c0a87c79f572c1ce0e31359fd3ecfb9bd1ed237dbApprove366064752022-12-09 5:44:245 mins ago0x98b68395b3c01265095b954eb8b46bfaf4720241 IN  Polygon: WMATIC Token0 MATIC0.001692976741 36.488926899
0x065fc8114eabc8aac2a09fb4a5cd09e042c61e6258cc8145e4021ecc81ff5147Deposit366064592022-12-09 5:43:485 mins ago0xc3ac322ca017bedf891032b826f2552506375120 IN  Polygon: WMATIC Token0.113 MATIC0.000922613501 33.020060174
0x04bfd753e4489b85ff3f93a1d907650e8630917b58d718953df23645a6a5ca70Approve366064582022-12-09 5:43:465 mins ago0x08dadf94f0ec1a3b7b46bef4445a2b71d1aa1c6b IN  Polygon: WMATIC Token0 MATIC0.001532984445 33.040594124
0x8f69763526a422e2dc0976f34e0149d49a519f31ade83e1de07e04ef1ebb4bbdApprove366064512022-12-09 5:43:325 mins ago0x345857a3f4db3751374fd44c381b5310cc282994 IN  Polygon: WMATIC Token0 MATIC0.001717861103 37.025262494
0x0684304c17570f705c05cce6eb629e357cfe5c34eeeefa6920ee6a650cfd062eDeposit366064432022-12-09 5:43:166 mins ago0x5525e6fbfb80fa70932c130ee1550d364fee264f IN  Polygon: WMATIC Token2.892705574968285 MATIC0.001113029747 39.835000432
0x8e5e8255958e11f8b72ecd7dda6c746d64fd13fdce2dba47ebfc947069711378Deposit366064412022-12-09 5:43:126 mins ago0x5525e6fbfb80fa70932c130ee1550d364fee264f IN  Polygon: WMATIC Token2.892705574968285 MATIC0.001597621949 35.470392526
0x57d347180e0cc9cefada2c88d35ff5824aeb2ece1f80c903b2c316b6a88660f1Approve366064392022-12-09 5:43:086 mins ago0xf03514d795d460ca7555710e998dbedad4e57ae5 IN  Polygon: WMATIC Token0 MATIC0.000858178748 35.589878846
0x201fe2dff054daca5300ac72defeaa7fae81d4828dcf813fd2a828e7fed79f75Approve366064332022-12-09 5:42:566 mins ago0x246992b9f5dce6a69630c652e66d0823babd9be8 IN  Polygon: WMATIC Token0 MATIC0.001594769931 34.372263965
0x12638ae6b4c013d3641f6aa4f971019b3563b5763bd6bf049bb4eed2a05eba03Approve366064332022-12-09 5:42:566 mins ago0x85ce0755f672fea5f67b8157e446d106f6f92465 IN  Polygon: WMATIC Token0 MATIC0.001655130234 35.673216689
0x2ea1dba765cb7df87ff1d417e02aa46b519c9d2bd9e43af3446419895f880c33Deposit366064252022-12-09 5:42:406 mins ago0x6e6b2d4aa0efde6515ec49d52f1634cf58c529ff IN  Polygon: WMATIC Token0.012 MATIC0.00087735972 31.400440953
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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
0x5f1b89a841af20039d26d8f53e0f92910b0de9c7d99fea5acaf884f1f2d4d223366065702022-12-09 5:49:0424 secs ago Polygon: WMATIC Token DODO: Router28.109582607819950417 MATIC
0x4fb734ae8aba7ad058d37714481bebf29932c66198e4948e9377160e42aad6a5366065692022-12-09 5:49:0028 secs ago Polygon: WMATIC Token 0x: Exchange Proxy Flash Wallet0.514921388326906565 MATIC
0x6b2c33798bdab40e0fdc957ee754ca32d55e968b32cb648f381c3f7c1518bab3366065692022-12-09 5:49:0028 secs ago 0xf3938337f7294fef84e9b2c6d548a93f956cc281 Polygon: WMATIC Token0.012 MATIC
0x3bdcf1b43044d774adbbb308fb554e5d14969dcde5544dbb51c21af235d7df78366065682022-12-09 5:48:5632 secs ago Uniswap V3: Router 2 Polygon: WMATIC Token0.02 MATIC
0xc29a72669816ab55582efb45831ac2523aee8c38809d8fe819085404353bbe41366065682022-12-09 5:48:5632 secs ago Balancer V2 Polygon: WMATIC Token0.05 MATIC
0xdd62e6c500e9658dbe37c6570c1e9b4e5d910cd5d77f91eab7b32e765aba3724366065672022-12-09 5:48:5236 secs ago QuickSwap: Router Polygon: WMATIC Token15 MATIC
0x0402c6e82b85242e1088ca4689591216d16ffa508e71f64bfdaa5457eef2c624366065662022-12-09 5:48:4840 secs ago Balancer V2 Polygon: WMATIC Token0.010675130813872127 MATIC
0xaefab7ac74182b1647fd5ffe3c1748bad10f250d56162e52390c225f72b5e16d366065662022-12-09 5:48:4840 secs ago Paraswap v5: Augustus Swapper Polygon: WMATIC Token629.583495188687483318 MATIC
0xaefab7ac74182b1647fd5ffe3c1748bad10f250d56162e52390c225f72b5e16d366065662022-12-09 5:48:4840 secs ago Paraswap v5: Augustus Swapper Polygon: WMATIC Token2,360.26341552060304524 MATIC
0xaefab7ac74182b1647fd5ffe3c1748bad10f250d56162e52390c225f72b5e16d366065662022-12-09 5:48:4840 secs ago Paraswap v5: Augustus Swapper Polygon: WMATIC Token865.532729147950643019 MATIC
0xaefab7ac74182b1647fd5ffe3c1748bad10f250d56162e52390c225f72b5e16d366065662022-12-09 5:48:4840 secs ago Polygon: WMATIC Token Paraswap v5: Augustus Swapper472.265219223461880787 MATIC
0xaefab7ac74182b1647fd5ffe3c1748bad10f250d56162e52390c225f72b5e16d366065662022-12-09 5:48:4840 secs ago Polygon: WMATIC Token Paraswap v5: Augustus Swapper1,415.569235074016750939 MATIC
0xaefab7ac74182b1647fd5ffe3c1748bad10f250d56162e52390c225f72b5e16d366065662022-12-09 5:48:4840 secs ago Polygon: WMATIC Token Paraswap v5: Augustus Swapper1,967.545185559762539852 MATIC
0x994809ab69830229a3ed9583ad8b7f746b4b423cf698099a9bf7bcd4bd19078a366065652022-12-09 5:48:4444 secs ago Polygon: WMATIC Token Paraswap v5: Augustus Swapper31.06834164796915794 MATIC
0x1066ea3df7c8f2c276aca06abac5be1091e35d54e47f5fb0baf4f1eb2d2e4a03366065642022-12-09 5:48:4048 secs ago 0x6bfce69d1df30fd2b2c8e478edec9daa643ae3b8 Polygon: WMATIC Token15 MATIC
0x637d39d1f829da876ac4da4ebb0e1960b2a8f747d4a6a82dbc3c7e87baf3650f366065642022-12-09 5:48:4048 secs ago Balancer V2 Polygon: WMATIC Token0.001 MATIC
0x6067e1905a8fa7a8edcc1a64a68b698209b599846690550c7b6afe800e64bf89366065632022-12-09 5:48:3652 secs ago SushiSwap: Router Polygon: WMATIC Token1 MATIC
0x0268780e33d34ac71537abea84f832ae7e970da46cd745d8410308993a710b36366065632022-12-09 5:48:3652 secs ago Polygon: WMATIC Token 0x0d15038f8a0362b4ce71d6c879d56bf9fc2884cf2.153851118695599684 MATIC
0x30682feff0ea4f3af2a208b27d3bc287aaa0e2afb708b4dfd88c669505689448366065622022-12-09 5:48:3256 secs ago Polygon: WMATIC Token 0x0d15038f8a0362b4ce71d6c879d56bf9fc2884cf1.419613892405426672 MATIC
0xdd29e029c6bc83b519d113ddf321a896b7bd135de50c98b1e2fa6e348d6add13366065622022-12-09 5:48:3256 secs ago Polygon: WMATIC Token 0x1111111254fb6c44bac0bed2854e76f90643097d13.737990166987193301 MATIC
0x6ee556c8f096d20ff5a5d3b16940f2d28118cd29ca0cf0c83ff9137640f8a15b366065622022-12-09 5:48:3256 secs ago Polygon: WMATIC Token Paraswap v5: Augustus Swapper0.000542346529847518 MATIC
0x6ee556c8f096d20ff5a5d3b16940f2d28118cd29ca0cf0c83ff9137640f8a15b366065622022-12-09 5:48:3256 secs ago Paraswap v5: Augustus Swapper Polygon: WMATIC Token0.109011652499351186 MATIC
0x638aa39e6b17d7a47d4492c70c740a51f03dabb641a124fc4735bdad1a99b444366065622022-12-09 5:48:3256 secs ago 0xf3938337f7294fef84e9b2c6d548a93f956cc281 Polygon: WMATIC Token5.218755228282443966 MATIC
0x8f904d6e22dfeb24e948099359b2b2ab10aa2d045f0ae7f3ee62bf1212fb4657366065612022-12-09 5:48:281 min ago Polygon: WMATIC Token 0x: Exchange Proxy Flash Wallet4.61381621171285731 MATIC
0x76f2d0c2daf6cd3eee2c685bf30e7fb42b731d5fe3864cdcfd9d2ac687a74dd3366065612022-12-09 5:48:281 min ago Paraswap v5: Augustus Swapper Polygon: WMATIC Token21.812125277907576934 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
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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
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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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  The precise terms and conditions for copying, distribution and
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                       TERMS AND CONDITIONS

  0. Definitions.

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menu, a prominent item in the list meets this criterion.

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  The "source code" for a work means the preferred form of the work
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  2. Basic Permissions.

  All rights granted under this License are granted for the term of
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circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.

  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
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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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    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
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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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    e) Convey the object code using peer-to-peer transmission, provided
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    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
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is a consumer product regardless of whether the product has substantial
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  "Installation Information" for a User Product means any methods,
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and execute modified versions of a covered work in that User Product from
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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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    f) Requiring indemnification of licensors and authors of that
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    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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