Contract 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2


Contract Overview

Wrapped Ether
2,414,373.948501380217417889 Ether

$333,859,629.60 (@ $138.28/ETH)

TxHash Block Age From To Value [TxFee]
0x58fd137279ee5ad023269fd8fdfb685101d2ff80ffbfa8f7c73ec1534982fa0a740369450 secs ago0x1c1e4fd4261e4e602a9ca499289161e99d7f4e89 IN  Wrapped Ether0.0169 Ether0.000226768
0x45b318b93629846d86d969c3359c0a19e75ce0d354c1b58660ca32d17d49975d74036872 mins ago0x1c1e4fd4261e4e602a9ca499289161e99d7f4e89 IN  Wrapped Ether0.0098 Ether0.000226768
0x87714d760dfb30746488b28252b0c72458a3da6190eea7971d1429ac2fa5744674036833 mins ago0x7414b1f140d35c73cf39d052ff0aa3b68164fc36 IN  Wrapped Ether0 Ether0.000361536
0xef662cad89d18c6221d415a7e9fed49e73b193cf76ae126400f373746c62203974036784 mins ago0x6d3e302c362f84351ad52972ef761f027252b081 IN  Wrapped Ether0.007 Ether0.000346768
0xd6d3bd7b7da166eec0c5191d577b0d2f450af5b7bdad78312f6636b01f27721e74036735 mins ago0xc210e0fe91b578b3063a8d654457cc4d13c76c56 IN  Wrapped Ether0.1 Ether0.00014173
0xae7ec3145aef5056e9910dd7dc6d7145f09d0b2e400dd4096dd46316b08dba5374036735 mins ago0x7414b1f140d35c73cf39d052ff0aa3b68164fc36 IN  Wrapped Ether1.1511001 Ether0.000346768
0xa63a92266328d5182e231c37deac880f3a0080acf2d2c7afd34442fb6a2f0efc74036569 mins ago0xdc039af3f33868b9e9403192b50ad7ffd82274de IN  Wrapped Ether0 Ether0.0001084608
0xf672612a42860edd8d66181b7bce7f3913b0e969647194e2f1d22d04efcd710e74036549 mins ago0x5a30dd8b35a24d65f4288a733d7a71e372d5993b IN  Wrapped Ether0 Ether0.000050446
0x27ac1cf9cf1b8786532d7fb67d05afcfc377cdeb27caa10da1e950b72d12c18c740364810 mins ago0x1c1e4fd4261e4e602a9ca499289161e99d7f4e89 IN  Wrapped Ether0.0071 Ether0.000226768
0x7e298c6c832c4692bdd4b12397305a6c10008860e50325d4d4c58e72542331ec740360620 mins ago0x5c87915f26b5414e9748300caa7a67f5f0c1b989 IN  Wrapped Ether160 Ether0.000170076
0xd7bc751f7f6345c9d371d1b403d543d9ce1729576d0d58dc24156a6a207033f3740359622 mins ago0x52feb9bf6f37bbd01309515feec062632f5ccb2b IN  Wrapped Ether74.9 Ether0.0000541825
0x9733f19b5b9fd228208cf899a421661a28061acc8e7c391333e24f5f05b5e80b740357825 mins ago0x466c702c8d67be7b58e2fbe508510ca6b8a07b54 IN  Wrapped Ether0 Ether0.000361536
0xa9d8b1fe568a2770f6bf862bc97da6eee08bf19e5784fc8cb0c9007c2f52f52e740356529 mins ago0xf3e787b873ac2b960c6e4b732eacd1638afc5fba IN  Wrapped Ether0 Ether0.000138264
0x2df80c13175bd3c3adcda3e6ccec92f2f3a2db4fffa8127c90eba8798574885a740353534 mins ago0x5b83259de5e920022844fd25bf39ba1ff22c3552 IN  Wrapped Ether0.2 Ether0.000127557
0x4e8a4fae55d328d43cf50a56da3089b789c51cbbd1500d681fcc743ebead509e740351937 mins ago0xf3e787b873ac2b960c6e4b732eacd1638afc5fba IN  Wrapped Ether0.01823361 Ether0.000083493
0x403aadf8bed763e9c383876ce8b864943a265c37e69f45da4a23191fe3af7be4740350140 mins ago0xf929c7226d2e9a348378ac0f8c73213f5da5413e IN  Wrapped Ether0 Ether0.00005406
0x57b15ce401f402f5d2b8ff9a40815d07f811ec51e2751442d93b4d6c52cb2e4f740349141 mins ago0x5eba889ba3a5b56f3b6642c411ea8284d4f097b0 IN  Wrapped Ether0 Ether0.000021618
0xfdf9ae4af6c024551a1a8e2268c8f51c2d1d4649a49b955581b6d9f1d2657b32740349141 mins ago0xe2d41f234b1cbc567a2d83f3e9ab6276b1fa9313 IN  Wrapped Ether0 Ether0.000021618
0x4fb228c7e86ac33efdf098cfe07294326540955591b36905fa00e2868390e9a7740348243 mins ago0x33debb5ee65549ffa71116957da6db17a9d8fe57 IN  Wrapped Ether1.5 Ether0.00014173
0xa60171c60b70ae1e8aef6ddce989bcd633162095521ac34acad1504e6e9ed042740348044 mins ago0x4cc4c344eba849dc09ac9af4bff1977e44fc1d7e IN  Wrapped Ether0 Ether0.00010812
0x6eb046f11473d6fee73c4427902ba60ba60d963014bc529081a7f6b77e79ceb1740345052 mins ago0xe667401b079b6e5de4f68ebc35325d6d725e4221 IN  Wrapped Ether0 Ether0.000021618
0x63706412d836985972b0abcf14755470fb01648a71a968b7019efe52a03222d2740343955 mins ago0x33debb5ee65549ffa71116957da6db17a9d8fe57 IN  Wrapped Ether0.1 Ether0.00014173
0xd5f01ef6bbe9d3f4204f92218c91ddeb5ab3691c9a852de244ece12a739e26f2740343555 mins ago0xe2d41f234b1cbc567a2d83f3e9ab6276b1fa9313 IN  Wrapped Ether0 Ether0.00022596
0x7facf5a8b9eb8cefc2d9150051ffae9fd83ffbe6c4696bba6eb1d35da5d4e451740342258 mins ago0xe19133a469c87fcf3c1b43a2686b27b4bd2188b2 IN  Wrapped Ether15 Ether0.0000354325
0x3912a2e046e3be2adb3838c2ad18ded8c8e5b616e6e7d9f271418a82ca39aa71740342059 mins ago0xa4f025b5b6516eeb876db7a4770bd93c24d381de IN  Wrapped Ether0 Ether0.00018341
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Latest 25 internal transaction, Click here to view more Internal Transactions as a result of Contract Execution

Parent TxHash Block Age From To Value
0xeae121bd95f3c89fad51927f05ccf21f9984b855cd96bcb4a8e566fbdedf8b2f74036823 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x35f98b0951756a915f69d2d7570d8b24a3f8bf5e0.01 Ether
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0x2b7b884a90c8137d7f7f68c56df4b0909f4084c47a37d02e59551c3798b63f3774036716 mins ago0x3a306a399085f3460bbcb5b77015ab33806a10d50xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20.1 Ether
0xf672612a42860edd8d66181b7bce7f3913b0e969647194e2f1d22d04efcd710e74036549 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x5a30dd8b35a24d65f4288a733d7a71e372d5993b175.33528 Ether
0x5d9e456ccc19f1dd08c5b602eb216a2bc73ce3a707b4b682591c838cb9eb249a740364612 mins ago0x3a306a399085f3460bbcb5b77015ab33806a10d50xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc24 Ether
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0x2aa075ac86d68a7666b2788719cd4927a9e47520a09c653cd8fe655858fec7d7740363316 mins ago0x526af336d614ade5cc252a407062b8861af998f50xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20.2 Ether
0xe6657bd00ac6d592f085c5436208860ed439c7bd414b028f369711dbfd169f1c740359022 mins ago0x57f8160e1c59d16c01bbe181fd94db4e56b604950xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20.04232023551253804 Ether
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0xa60171c60b70ae1e8aef6ddce989bcd633162095521ac34acad1504e6e9ed042740348044 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x4cc4c344eba849dc09ac9af4bff1977e44fc1d7e0.5 Ether
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0xb8a8228c285b65e481665abaa08dfd662b39d9428eba1862fa2bca07a77f848074033241 hr 25 mins ago0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc20x85c5c26dc2af5546341fc1988b9d178148b4838b24.999999999999999999 Ether
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Contract Source Code Verified (Exact Match)

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Contract Source Code

// 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 WETH9 {
    string public name     = "Wrapped Ether";
    string public symbol   = "WETH";
    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
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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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gratis or for a fee, you must pass on to the recipients the same
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  Developers that use the GNU GPL protect your rights with two steps:
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    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
    Appropriate Legal Notices; however, if the Program has interactive
    interfaces that do not display Appropriate Legal Notices, your
    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
    authors of the material; or

    e) Declining to grant rights under trademark law for use of some
    trade names, trademarks, or service marks; or

    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 ABI


Contract Creation Code


Swarm Source

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