Contract 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 13


Contract Overview

Wrapped Ether
7,310,460.187897372999598447 Ether

$20,354,879,824.17 (@ $2,784.35/ETH)

Txn Hash Method
0x7c68d1774ffec5f11f9fe7be22f863d09c71dab87c5aacbce92be741e1e666a2Deposit(pending)2021-09-26 8:58:2310 secs ago0x63341a2fb70125befa483752c9e924f83cd0d23f IN Wrapped Ether0.1 Ether(Pending)(Pending)
0xa4681c5b6695537218113b965416002c35551c238ea816f6dbea2e781c853792Deposit(pending)2021-09-26 8:58:0528 secs ago0x43ee43f9e39dc91aa4186c14cc1faa83bfc280ec IN Wrapped Ether0.095 Ether(Pending)(Pending)
0x5388b95883978528ad0c649d945abb84f5b549781efe13e8c548b71b23ac210dDeposit(pending)2021-09-26 8:57:3558 secs ago0xe6b9f6b9cc3dac911976008b131c2ca634d576c5 IN Wrapped Ether1.011301164685788989 Ether(Pending)(Pending)
0x8554f5f581c5241b5dcf5a155ce615d1dfa03003ecd448bdb656682d02e7f45fApprove(pending)2021-09-26 8:56:551 min ago0x6fcb402425319af43d3b6c4f603c51b8fbda5351 IN Wrapped Ether0 Ether(Pending)(Pending)
0xe0289883e2e9ffe4db94cf5ac5debb32b5a9fc7654de7fb450a4dad337987de0Transfer(pending)2021-09-26 8:55:063 mins ago0x475c2ccf4519676a5e4312d99c40dcdf73e9f4fd IN Wrapped Ether0 Ether(Pending)(Pending)
0x73234070f40f1a2fb7ab7b2250d49b1cf30e1efc32c0fb95ac37d0eb0b63d0faWithdraw(pending)2021-09-26 8:51:047 mins ago0xa6fff7304c3cb9ba332539863ba5dfe9f131db61 IN Wrapped Ether0 Ether(Pending)(Pending)
0xb437114e10d5da13a664d1a78d50333551bcd315cc937a3c017cbb018fcd94eeDeposit(pending)2021-09-26 8:51:047 mins ago0xa1610b0148e47609ca7a23a5a478af2226a1c190 IN Wrapped Ether0.09 Ether(Pending)(Pending)
0x0e3e0274273e45080a450677fabf4f6ac6525adb005549aebb75e61631805b18Deposit(pending)2021-09-26 8:51:047 mins ago0x3e4e1ce0066329e1069ceedcf7988d3c8e7de79b IN Wrapped Ether0.003 Ether(Pending)(Pending)
0x76d4f3cd2d842172aaa6e2cd04aeceace1571ec4e9dcd0966cab915d50f70555Approve(pending)2021-09-26 8:48:509 mins ago0x628ee9da4ca86eea0ec061783d64e460aefba4dd IN Wrapped Ether0 Ether(Pending)(Pending)
0x46e6f2ae425ddaa3c54949905750f4178d35a63f996d91d3ae758ccc2bb8f76bApprove(pending)2021-09-26 8:48:509 mins ago0x07dbe9a8a00b72144ad12e3cf3b036801bdf7e40 IN Wrapped Ether0 Ether(Pending)(Pending)
0x65e90a35d3922b2d3fdec9580b702895b3a00e592e16c8d5aed3311648dfa7c2Approve(pending)2021-09-26 8:42:2116 mins ago0xd0f71abf02ebb9a77a4b46f6f4419da6150bc994 IN Wrapped Ether0 Ether(Pending)(Pending)
0x2a2a91707951269d698526768fde386b7f11c65498d95e549a7d84d7812f7efaDeposit(pending)2021-09-26 8:42:1216 mins ago0xb51bdc3f449ecb54fced4dfe83acf56b93ee6f3e IN Wrapped Ether0.003803 Ether(Pending)(Pending)
0x76c4850165002ae44b7062530ff4f2e89c7aad3ace91d17713fc682cdf5de9acWithdraw(pending)2021-09-26 8:42:1116 mins ago0xd90a49bb4b7b0209784234a1fcd292e3bc62f473 IN Wrapped Ether0 Ether(Pending)(Pending)
0x45bc5de7ddc12fbfcf8a83aac21fcbd17f1f7228f0c7780f7397790450ab785aTransfer(pending)2021-09-26 8:41:0717 mins ago0xd38b18050e5cc161646285a97316bdd8a274356e IN Wrapped Ether0 Ether(Pending)(Pending)
0xf17ee09518c3bac14383e163fadaa18536aedfe69266fbfd6068181d26594c7cDeposit(pending)2021-09-26 8:39:2219 mins ago0x61a9a54bd618661e430b3041bc8d46ed9cb86046 IN Wrapped Ether0.009 Ether(Pending)(Pending)
0x7bf1d4eed6a7733dc41d22a13a23860d7881603154635e4580b0e0604f600c13Deposit(pending)2021-09-26 8:39:2219 mins ago0x61a9a54bd618661e430b3041bc8d46ed9cb86046 IN Wrapped Ether0.028 Ether(Pending)(Pending)
0x76bf0a8ac89e1118e74204f0cfef8ef581ef55ca221ea2214bbcf321cf0bbb09Withdraw(pending)2021-09-26 8:39:2219 mins ago0x61a9a54bd618661e430b3041bc8d46ed9cb86046 IN Wrapped Ether0 Ether(Pending)(Pending)
0xc5cb27ce05b21d28d4e32c38782a43f4837c98f8a0a18d6fc7bcfa8f9ca7e7bbDeposit(pending)2021-09-26 8:39:0519 mins ago0x232df3b45c1187046f63f9fe4da80fe61cc46543 IN Wrapped Ether2.21135 Ether(Pending)(Pending)
0x979a410e5e607233df2fdcaf71d314f12aaff870c38a0375a7a9e8866e9793e8Approve(pending)2021-09-26 8:37:4820 mins ago0xb45e9efd06b5075fdd423a30810b07ba77611307 IN Wrapped Ether0 Ether(Pending)(Pending)
0x24f57c7ed9bedafdadfa97894c1072996dc7f8f6d0adfeeef1736702fd303d59Withdraw(pending)2021-09-26 8:35:5522 mins ago0xb1b3acb901f0311ddd8fb43b0e648d918400920e IN Wrapped Ether0 Ether(Pending)(Pending)
0xc2f57d1156938ecc9d117ec6b2deaa38aa60fbf3623333d80a51174ee1df1b9cDeposit(pending)2021-09-26 8:34:4923 mins ago0xe1cb05eaadb8e785f50e08754940e66fd5706025 IN Wrapped Ether0.00008387 Ether(Pending)(Pending)
0xd7bf98b820a7a1d19fe88b6e4ee0a5906784d3d137ff155686821a9cea20c7f2Deposit(pending)2021-09-26 8:33:0825 mins ago0x539932a5d09d765a880ef63444e6a6cc7364336c IN Wrapped Ether0.0141 Ether(Pending)(Pending)
0x389d4ee7a253649abb6e24967f76651dd714eddf4343937df205e3bbf8f87d23Deposit(pending)2021-09-26 8:33:0825 mins ago0x539932a5d09d765a880ef63444e6a6cc7364336c IN Wrapped Ether0.015 Ether(Pending)(Pending)
0xa6141312db341e224d64455742f38a6473a09b339d37aeb81797c48176c4264fWithdraw(pending)2021-09-26 8:32:4525 mins ago0x4381812c04f9fc1a0b16051f587c4a90d9069474 IN Wrapped Ether0 Ether(Pending)(Pending)
0xbfe5151ad4f90b617b0ddb67218e0aa4faa2aac53ab265e1ab715f37c5e419cdApprove(pending)2021-09-26 8:30:5927 mins ago0x1c8026cc8cd5eb35836d666fbd778e5268fd893b IN Wrapped Ether0 Ether(Pending)(Pending)
Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xa6138ac0ddf44d995c5beb179f999b73d995fc7734fc85f25846e10ea230f27d133004692021-09-26 8:58:0627 secs ago Paraswap v5: Augustus Swapper Mainnet Wrapped Ether0.15 Ether
0xb86ecb37d99090c5c12675cf46b91d94b7a8d566d0431910e9d557698e32d0e0133004692021-09-26 8:58:0627 secs ago Shiba Inu: ShibaSwap Wrapped Ether0.003165376843420886 Ether
0x4b5b089e785c5215df3c5302383956b1abad26e701c700c28c5e6e91f295b982133004692021-09-26 8:58:0627 secs ago Wrapped Ether Uniswap V2: Router 20.085466246993804829 Ether
0x4732036ac3af0e9f5298fdf0b1ccbaef6de24d4490334ce2e95d120695a26406133004692021-09-26 8:58:0627 secs ago Uniswap V2: Router 2 Wrapped Ether0.05 Ether
0xc1fb66a303ea3b761b73d1bbca88e94a7e08278dbc57ff0844d8da248c355317133004692021-09-26 8:58:0627 secs ago Uniswap V2: Router 2 Wrapped Ether0.05 Ether
0x803832bebcec92a7d9bc706b173f2b411b8b24f5f1c7c8d4ea882c27bdacd2e8133004692021-09-26 8:58:0627 secs ago Axie Infinity: Ronin Bridge Wrapped Ether0.107 Ether
0xae55a3169d2f7d38562e6a1cc8db1162a74c0da99a182c111fee647c11f1a7f6133004692021-09-26 8:58:0627 secs ago Uniswap V3: Router Wrapped Ether0.1 Ether
0x53240cfa88e273d705145d896b458405f645493e27e524024cd77e0e2c3f4a8b133004692021-09-26 8:58:0627 secs ago Uniswap V2: Router 2 Wrapped Ether1 Ether
0x264b0b3ba802a32404e23f7b48d27ad428820d736e03b0eb30560bf7e9f5a029133004692021-09-26 8:58:0627 secs ago Wrapped Ether 0x27239549dd40e1d60f5b80b0c4196923745b1fd215.045399185678015411 Ether
0xb272dec9ebfd0eca6576fad015e33c67c4105648a7bc7e6d2ebeb3a323f0a647133004692021-09-26 8:58:0627 secs ago Wrapped Ether 0x27239549dd40e1d60f5b80b0c4196923745b1fd29.117326918171741741 Ether
0xfc280fd41cbca022cf505426abdc93fed55f985fd877e02d4d4cfcca6b636da9133004692021-09-26 8:58:0627 secs ago 1inch V3 Wrapped Ether2 Ether
0xf654d88ad1e56743bd85c66e05a56e78d6c049e36ad65ab36bffdd6f47e54b52133004692021-09-26 8:58:0627 secs ago Wrapped Ether Uniswap V2: Router 22.624758748704973471 Ether
0x3e4a6c120652cdb3074e02e960ce34921bcb48f47c88c2771d52e046c1e7d7fc133004692021-09-26 8:58:0627 secs ago Wrapped Ether 1inch V30.292644697851406759 Ether
0xd74689fe7fd88e41b3dc68125aa57c3641439870e0b241c620260f3d7fb32cbc133004692021-09-26 8:58:0627 secs ago Wrapped Ether Uniswap V2: Router 20.00993587784177166 Ether
0xa3111ca91bc4a91575fd5cd588ed02ff30e82d4a1427fbfb7cf10cb19faed47d133004682021-09-26 8:58:0231 secs ago Wrapped Ether 0xe6e90bc9f3b95cdb69f48c7bfdd0ede1386b135a0.162105154989356827 Ether
0xb9f27ba9768fd0f4b8b923bf0102c60b62d786dac699486d0026b02c761dad15133004682021-09-26 8:58:0231 secs ago Wrapped Ether0x1d77625cfdcf42cd26357223d1e245b7a8681d270.66 Ether
0x733a78ba7c15dfb223a2fd6ab32fb7b56d7af4fe415b90164a60d5faf459eefa133004672021-09-26 8:57:5043 secs ago Wrapped Ether 0x27239549dd40e1d60f5b80b0c4196923745b1fd20.35 Ether
0xffe5f23314ab53c84970a6db52521321b9e65de7fe7cecad9f487c89a1bb0689133004672021-09-26 8:57:5043 secs ago Axie Infinity: Ronin Bridge Wrapped Ether0.7 Ether
0xa46a723ba4e6158ceb96078427660911e3791b003e026494c7fb4079818cd7a8133004672021-09-26 8:57:5043 secs ago Axie Infinity: Ronin Bridge Wrapped Ether0.143967 Ether
0x0179c73f96ef6fce36f3c576829753c624d705b85cfed09ff341c735bb60cb0f133004672021-09-26 8:57:5043 secs ago Uniswap V2: Router 2 Wrapped Ether0.04 Ether
0xa238867a00150fb19ce90a029346ac703888db34181241a8a77682f63d94d996133004672021-09-26 8:57:5043 secs ago 0x0000005c9426e6910f22f0c00ed3690a4884dd6e Wrapped Ether10.7679 Ether
0xd169ea14adbd9e27bdffcebf4b914065bcba210ea673a48aa68f7d214563070f133004672021-09-26 8:57:5043 secs ago 0x0000000476fde29330084b2b0b08a9f7d2ac6f2b Wrapped Ether3.5892 Ether
0x7781d5fa3c255f7ccee0e7d7343fdae60c52dc52d9ecbc07c5535e0de53f8713133004672021-09-26 8:57:5043 secs ago Wrapped Ether 0x0000000476fde29330084b2b0b08a9f7d2ac6f2b3.5932 Ether
0x448d4c0163be50af2a1a1846cc4fe3ef03e7a69d55440d9566586a2d77e7e4db133004672021-09-26 8:57:5043 secs ago Wrapped Ether 0x4a14347083b80e5216ca31350a2d21702ac3650d0.117152837203443974 Ether
0xab482a0f6ad50ff717f7bb712628e29f1928aa603e6c39ea62d2801c433ca14a133004672021-09-26 8:57:5043 secs ago Shiba Inu: ShibaSwap Wrapped Ether0.054 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:

Compiler Version

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
 *Submitted for verification at on 2017-12-12

// 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.


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  When we speak of free software, we are referring to freedom, not
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  A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit.  Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.

  6. Conveying Non-Source Forms.

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

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

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

    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
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    d) Convey the object code by offering access from a designated
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    that supports equivalent copying facilities, provided you maintain
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    e) Convey the object code using peer-to-peer transmission, provided
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    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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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



Swarm Source

Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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