Contract 0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270 9


Contract Overview

Polygon: WMATIC Token
315,091,405.295697052827131343 MATIC

MATIC Value:
$475,472,930.59 (@ $1.51/MATIC)

Txn Hash Method
Value [Txn Fee]
0xf2783865dad8ccd398e32f0745f3f029eb27a2b80d975aacf417a1d9495ba392Approve203665502021-10-19 3:17:2129 secs ago0xc5b50eca33789c493e38cf0d1e822b4e8aafe81c IN  Polygon: WMATIC Token0 MATIC0.0046109
0x999e6ff9f81f0c2eddc6a2802b6545b80d3bb5c0e5e60255aad151766d815ee8Deposit203665482021-10-19 3:17:1733 secs ago0x8a16b4dab4fe59411e00a5bc2432ca34d5f73640 IN  Polygon: WMATIC Token103.883119088164503 MATIC0.002388417097
0x8bdccf4bcfc6acb1358a0ea912a49baaa12cb10cd6f2b3f71b7f92ecceb91f19Withdraw203665262021-10-19 3:15:422 mins ago0x18e692e3cb8354b9539c4a1af15bad67a72e004c IN  Polygon: WMATIC Token0 MATIC0.00060789
0x9d0f8084ef98f386cff87e0762ec9d8e7e2fee1a7f0f0d9a408dd63854ecc128Withdraw203665162021-10-19 3:15:222 mins ago0xa5ddb754a5dc52560c3fb41c0f8bb50e466b081d IN  Polygon: WMATIC Token0 MATIC0.00060789
0x74311b109a600e42fdf5097927b716a6380c285251fa9ce626d75585cf4f7351Withdraw203665142021-10-19 3:15:182 mins ago0x63e27fd26dd5df836a68086b209022182e95dde1 IN  Polygon: WMATIC Token0 MATIC0.00062793
0xb0afb9b7b2e6bc1a0d93d5bb0616ca3c92d28ff3f6e3900025d40949ac09fba5Withdraw203665112021-10-19 3:15:122 mins ago0x430f6cf3a8e42d6e5722435c05f946f75fb2a740 IN  Polygon: WMATIC Token0 MATIC0.000688534
0xcd401db9e6101e10e5c6f9e7518c22257433984d9ed516f70886bda3f294fa04Approve203665112021-10-19 3:15:122 mins ago0x137e164beb3c77c402ef45a356fc7dbf80b16011 IN  Polygon: WMATIC Token0 MATIC0.001577498
0x9cda9b756687bdcec0cfce54bfe186555935d5c53074e128f2f4b08da6c77211Withdraw203665062021-10-19 3:15:022 mins ago0x5292b11e8659d449189e73e10465a8bbe2816eee IN  Polygon: WMATIC Token0 MATIC0.00068935
0x47b76545de23331c468ceb7b80c6fa6668b9b4cdad703d98e42947be14855722Deposit203665032021-10-19 3:14:562 mins ago0x137e164beb3c77c402ef45a356fc7dbf80b16011 IN  Polygon: WMATIC Token1 MATIC0.001531394
0xa023d247b3a446f1fd9baf56de6aecb20512855d062833d161b61de89f6210faWithdraw203664952021-10-19 3:14:403 mins ago0x863f3ac0618df9c5820ef6fda3d28f7400ea17a7 IN  Polygon: WMATIC Token0 MATIC0.000648032
0x204cd088e91ab4f1e688e26bdc0329f445dd62735db1bfcfad1641087ded3bf4Approve203664682021-10-19 3:13:464 mins ago0x63e27fd26dd5df836a68086b209022182e95dde1 IN  Polygon: WMATIC Token0 MATIC0.00137607
0xd289d1193b72ac0e80f3ac541973eba1ddd29885765208ad651c8d2001ae9d3cWithdraw203664662021-10-19 3:13:424 mins ago0x452905e1ea69b22ea7a2ff508ef739999bcbdbe3 IN  Polygon: WMATIC Token0 MATIC0.000648861
0x3153a9579be5615f1f1fe64818a71abdff5b410d9bd93b337d8c0c771b4872b2Withdraw203664612021-10-19 3:13:284 mins ago0xc1f524ece7055c1f4f209423e1cf327fdf4406b1 IN  Polygon: WMATIC Token0 MATIC0.00060789
0xaa35bde4012b804151a7e6a60eb5d6dbc949a9c766f0f26810e5d84a97152bbbApprove203664602021-10-19 3:13:264 mins ago0x75e483cca6dfe6f565f8fa3c906d5629d020da7e IN  Polygon: WMATIC Token0 MATIC0.00138327
0x604c057d93443dab8b98f936d292a5420a6625e8c031de25469a05af022b7fe4Deposit203664582021-10-19 3:13:224 mins ago0x863f3ac0618df9c5820ef6fda3d28f7400ea17a7 IN  Polygon: WMATIC Token850 MATIC0.001416607
0xe02d1cf1e598ea223b3024af7cf0692a2e380739f04c45a556eede43fd14c22dWithdraw203664312021-10-19 3:12:285 mins ago0xf3d5fff5345229954c042afa3af1d11b54b7d444 IN  Polygon: WMATIC Token0 MATIC0.0020931
0xbe33c1a2011e59472c1d1f10d7dae2888799b3faeb9bd04807de6f87326cbcd9Approve203664292021-10-19 3:12:245 mins ago0x24c5c50da841f12d41213c625fb16fc0e8244941 IN  Polygon: WMATIC Token0 MATIC0.00138255
0x11370c08a99924fdcb08ef2c81b78c247fd534d4e277a05c20494e051bea8d69Withdraw203664132021-10-19 3:11:525 mins ago0xbc2414ebe56ac8cc8464c2f011589150ad00b8d6 IN  Polygon: WMATIC Token0 MATIC0.00062793
0x4e765164623097b4f1c7119b29ed2d2dd488f4c0b62339aa64513be5f78dec71Approve203664102021-10-19 3:11:466 mins ago0xf3d5fff5345229954c042afa3af1d11b54b7d444 IN  Polygon: WMATIC Token0 MATIC0.0045869
0x21e9cbb560d16fff2a3a4100b88684b58f3a50e306bbf5433aca286aa67e5e32Withdraw203664012021-10-19 3:11:286 mins ago0x3244500210437ab25b8c0fa33f337e56bcd5e34e IN  Polygon: WMATIC Token0 MATIC0.00062757
0xdfec0d74472fd2ee9355d6aa490c1fafd2d3d593270cf1274d2e366b21446153Approve203663972021-10-19 3:11:166 mins ago0xbc2414ebe56ac8cc8464c2f011589150ad00b8d6 IN  Polygon: WMATIC Token0 MATIC0.00137607
0x45a47c627fc17adcf66c20ff96afa65aef13f5dc6ac9416196fcc58c25c7d254Approve203663962021-10-19 3:11:146 mins ago0x3244500210437ab25b8c0fa33f337e56bcd5e34e IN  Polygon: WMATIC Token0 MATIC0.00137571
0x1244b95c9281dc3a9de4520d04b2333770e2336ae9ae052e490b9482b02c2482Approve203663932021-10-19 3:11:086 mins ago0xb96f5e49306361541aff189e7ad789f9ec292a7a IN  Polygon: WMATIC Token0 MATIC0.00139191
0x1d6d560f1990a141f0394f01b91e88c84c7f4a032ed5ae3e557611eb4430fcfaDeposit203663762021-10-19 3:10:347 mins ago0x3244500210437ab25b8c0fa33f337e56bcd5e34e IN  Polygon: WMATIC Token850 MATIC0.001416607
0x8484f4e403987d02d98408973c77539ee90011f2cc56f87ce0c8edd56887dfe6Approve203663722021-10-19 3:10:267 mins ago0x7c94fff0da690938c9c9e82f54dc4c2ddada8e87 IN  Polygon: WMATIC Token0 MATIC0.00138255
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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
0x3439e899543db6525afb195bb8af7262e6819f796a4625e280fe43bf426fb9d4203665392021-10-19 3:16:361 min ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.01 MATIC
0x66a571d90e527868f3c5b9db8284126e7bc723cd2697d56d38b98ea3b2dc26a2203665392021-10-19 3:16:361 min ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.1 MATIC
0x79beb71cfaf2317739fe45407bbdb2095a932e640d3741c72c43d21eaeb016aa203665372021-10-19 3:16:281 min ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f49841.524297776594161327 MATIC
0xf4077dcd8304273076d962724a12cb8e625b61cf0fe304fe5945f3e75ecb9155203665352021-10-19 3:16:201 min ago 0xf231be40d73a9e73d859955344a4ff74f448df34 Polygon: WMATIC Token0.001 MATIC
0xa674048bb198f0269204cc84d445615bb430ad7a0dcfbbea9bde0a4e7bf13178203665342021-10-19 3:16:161 min ago Polygon: WMATIC Token 0xf3938337f7294fef84e9b2c6d548a93f956cc28111.562224980159792733 MATIC
0x44dabaa7ba45974bf6c3bdc16a5829a6df7d9702265b8db98542be46c1b3cfde203665332021-10-19 3:16:121 min ago 0x11431a89893025d2a48dca4eddc396f8c8117187 Polygon: WMATIC Token307.2875 MATIC
0xe2374ea2bd61430ac9cc41ec4ae4124e1464bb709e176dc3be53c70437696359203665332021-10-19 3:16:121 min ago Polygon: WMATIC Token Balancer V234.064038923826675958 MATIC
0xe2374ea2bd61430ac9cc41ec4ae4124e1464bb709e176dc3be53c70437696359203665332021-10-19 3:16:121 min ago Polygon: WMATIC Token Paraswap v5: Augustus Swapper58.114277918705385966 MATIC
0xf49aa9aad777415f7c4f1cbf78507cd33ea2d070dab8132921cdaecd7b04c79e203665322021-10-19 3:16:081 min ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.01 MATIC
0xa02ac077da372687a5b4b55f348430f8ab43c0e22415ead68ff2fd0df999e3dd203665322021-10-19 3:16:081 min ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.001 MATIC
0x0134209d7f3bd3ee74267ec0ac3a2083d3c67cf0f3d1d7d0715101d7b02f839c203665322021-10-19 3:16:081 min ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token2 MATIC
0xda1736e2527ad81c49705f49bbf1a600ce0a8c388de62074449253f9ee9292ac203665292021-10-19 3:15:561 min ago SushiSwap: SushiV2Router02 Polygon: WMATIC Token27.302935 MATIC
0x16f0ccdac16c1919b26f1cd7e6e5ba7532a0b9b53bd4e94da9033a575115c702203665272021-10-19 3:15:442 mins ago SushiSwap: SushiV2Router02 Polygon: WMATIC Token11 MATIC
0xa1b0b446ff6b054d7e33c1cb69ae943f7bf61d366a0c308db3a3c5e348bf345b203665272021-10-19 3:15:442 mins ago Polygon: WMATIC Token 0x11431a89893025d2a48dca4eddc396f8c811718727.362688366245037472 MATIC
0xee2fd01043525f151a0f66b430a4ec06b71412f556b774a6894842ce8c7865db203665272021-10-19 3:15:442 mins ago Polygon: WMATIC Token 0x84e5bc3df0df0f543648f250443c6f407721831234.331450217322932323 MATIC
0xee2fd01043525f151a0f66b430a4ec06b71412f556b774a6894842ce8c7865db203665272021-10-19 3:15:442 mins ago 0x84e5bc3df0df0f543648f250443c6f4077218312 Polygon: WMATIC Token33.9419 MATIC
0x673fe678574ce9a400f7e02f3c9fd6e5b8d0cd300a658ff25e283099521849d4203665272021-10-19 3:15:442 mins ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token10 MATIC
0x0951ea305ec57afafa4d327492ab91373adbc3ad6a850c15abc012931b705e7b203665272021-10-19 3:15:442 mins ago Polygon: WMATIC Token 0x8dfdea6a4818d2aa7463edb9a8841cb0c04255af1.000057448761401648 MATIC
0xdb1855bd9018ff866b3945feb278592c5f8e35f2a7632952af21018198030d44203665272021-10-19 3:15:442 mins ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.0001 MATIC
0x8bdccf4bcfc6acb1358a0ea912a49baaa12cb10cd6f2b3f71b7f92ecceb91f19203665262021-10-19 3:15:422 mins ago Polygon: WMATIC Token0x18e692e3cb8354b9539c4a1af15bad67a72e004c0.178013474661686586 MATIC
0xa0a7c11189371e3c06ef7512f9707ba0b14cc2a1dc4728b1b22a90f1795c5827203665262021-10-19 3:15:422 mins ago Polygon: WMATIC Token 0xdb6f1920a889355780af7570773609bd8cb1f4980.448939635488101065 MATIC
0xadaa46590345e2da59597b3b088d8a4ca5954529dd1d85ea27f8b82df42cb558203665262021-10-19 3:15:422 mins ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.2 MATIC
0x9f2848833ad54107a167d2a8f9c0fad23956cba3cc1e9a5fdc195977f223f404203665262021-10-19 3:15:422 mins ago 0xdb6f1920a889355780af7570773609bd8cb1f498 Polygon: WMATIC Token0.001 MATIC
0x44da7e3c486d37c21afe415a07d381aaac1cc4876b8e370902a99fe01dc6920b203665262021-10-19 3:15:422 mins ago 0xa222e6a71d1a1dd5f279805fbe38d5329c1d0e70 Polygon: WMATIC Token17.045 MATIC
0x232b9be2ab976f23c919c72447b7cbc907d88eccbe5f37a1ad6e8d47c6dc081b203665252021-10-19 3:15:402 mins ago 0xf231be40d73a9e73d859955344a4ff74f448df34 Polygon: WMATIC Token0.01 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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  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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