contract.sol

// SPDX-License-Identifier: MIT
// Author: tycoon.eth, thanks to @geraldb & @samwilsn on Github for inspiration!
// Version: v0.0.2
// Note: The MIT license is for the source code only. Images registered through
// this contract retain all of their owner's rights. This contract
// is a non-profit "library" project and intended to archive & preserve punk
// images, so that they can become widely accessible for decentralized
// applications, including marketplaces, wallets, galleries, etc.
pragma solidity ^0.8.17;
/**

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░░░░░░░░░░░  ░░░░░  ░░░░░░   ░░░░░░  ░░░░ ░░░░░ ░░░░░░

            A Registry of 24x24 png images

This contract:

1. Stores all the classic traits of the CryptoPunks in
individual png files, 100% on-chain. These are then used as
blocks to construct CryptoPunk images. Outputted as SVGs.

2. Any of the 10,000 "classic" CryptoPunks can be generated
by supplying desired arguments to a function, such as
the id of a punk, or a list of the traits.

3. An unlimited number of new punk images can be generated from
the existing classic set of traits, or even from new traits!

4. New traits (blocks) can be added to the contract by
registering them with the `registerBlock` function.

Further documentation:
https://github.com/0xTycoon/punk-blocks

*/
contract PunkBlocks {
    // Layer is in the order of rendering
    enum Layer {
        Base,      // 0 Base is the face. Determines if m or f version will be used to render the remaining layers
        Cheeks,    // 1 (Rosy Cheeks)
        Blemish,   // 2 (Mole, Spots)
        Hair,      // 3 (Purple Hair, Shaved Head, Pigtails, ...)
        Beard,     // 4 (Big Beard, Front Beard, Goat, ...)
        Eyes,      // 5 (Clown Eyes Green, Green Eye Shadow, ...)
        Eyewear,   // 6 (VR, 3D Glass, Eye Mask, Regular Shades, Welding Glasses, ...)
        Nose,      // 7 (Clown Nose)
        Mouth,     // 8 (Hot Lipstick, Smile, Buck Teeth, ...)
        MouthProp, // 9 (Medical Mask, Cigarette, ...)
        Earring,   // 10 (Earring)
        Headgear,  // 11 (Beanie, Fedora, Hoodie, Police Cap, Tiara, Headband, ...)
        Neck       // 12 (Choker, Silver Chain, Gold Chain)
    }
    struct Block {
        Layer layer;     // 13 possible layers
        bytes dataMale;  // male version of this attribute
        bytes dataFemale;// female version of this attribute
    }
    mapping(bytes32 => Block) public blocks;  // stores punk attributes as a png
    uint256 public nextId;                    // next id to use when adding a block
    mapping(uint256 => bytes32) public index; // index of each block by its sequence
    event NewBlock(address, uint256, string);
    /**
    * Here we initialize `blocks` storage with the entire set of original CryptoPunk attributes
    */
    constructor() {
        // Initial blocks that were sourced from https://github.com/cryptopunksnotdead/punks.js/blob/master/yeoldepunks/yeoldepunks-24x24.png
        Block storage b = blocks[bytes32(hex"9039da071f773e85254cbd0f99efa70230c4c11d63fce84323db9eca8e8ef283")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c5445000000000000713f1d8b532c5626007237092b4acd040000000174524e530040e6d8660000004f4944415478da62a00a1014141480b11995949414611c2165252525989490113247092747c549c945006698629092a800c264b8324674030489315a49118f3284ab9590fc23045783cc01040000ffffd8690b6ca3604b190000000049454e44ae426082";
        index[nextId] = bytes32(hex"9039da071f773e85254cbd0f99efa70230c4c11d63fce84323db9eca8e8ef283");
        nextId++;
        b = blocks[bytes32(hex"dfcbad4edd134a08c17026fc7af40e146af242a3412600cee7c0719d0ac42d53")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c5445000000000000ae8b61b69f8286581ea77c470e17bdef0000000174524e530040e6d8660000004f4944415478da62a00a1014141480b11995949414611c2165252525989490113247092747c549c945006698629092a800c264b8324674030489315a49118f3284ab9590fc23045783cc01040000ffffd8690b6ca3604b190000000049454e44ae426082";
        index[nextId] = bytes32(hex"dfcbad4edd134a08c17026fc7af40e146af242a3412600cee7c0719d0ac42d53");
        nextId++;
        b = blocks[bytes32(hex"ed94d667f893279240c415151388f335b32027819fa6a4661afaacce342f4c54")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c5445000000000000dbb180e7cba9a66e2cd29d601a5e5ef40000000174524e530040e6d8660000004f4944415478da62a00a1014141480b11995949414611c2165252525989490113247092747c549c945006698629092a800c264b8324674030489315a49118f3284ab9590fc23045783cc01040000ffffd8690b6ca3604b190000000049454e44ae426082";
        index[nextId] = bytes32(hex"ed94d667f893279240c415151388f335b32027819fa6a4661afaacce342f4c54");
        nextId++;
        b = blocks[bytes32(hex"1323f587f8837b162082b8d221e381c5e015d390305ce6be8ade3ff70e70446e")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c5445000000000000ead9d9ffffffa58d8dc9b2b21adbe9c60000000174524e530040e6d8660000004f4944415478da62a00a1014141480b11995949414611c2165252525989490113247092747c549c945006698629092a800c264b8324674030489315a49118f3284ab9590fc23045783cc01040000ffffd8690b6ca3604b190000000049454e44ae426082";
        index[nextId] = bytes32(hex"1323f587f8837b162082b8d221e381c5e015d390305ce6be8ade3ff70e70446e");
        nextId++;
        b = blocks[bytes32(hex"1bb61a688fea4953cb586baa1eadb220020829a1e284be38d2ea8fb996dd7286")];
        b.layer = Layer(0);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000015504c5445000000000000713f1d8b532c5626007237094a120162eb383b0000000174524e530040e6d8660000004c4944415478da62a03160141414807384949414e112ca4a4a4a302946255c1c2115272517384731484914c61154c26380102e19b5343807c5390c42082d208b0419905c2d80c901040000ffff2f3c090f8ffce8ac0000000049454e44ae426082";
        index[nextId] = bytes32(hex"1bb61a688fea4953cb586baa1eadb220020829a1e284be38d2ea8fb996dd7286");
        nextId++;
        b = blocks[bytes32(hex"47cc6a8e17679da04a479e5d29625d737670c27b21f8ccfb334e6af61bf6885a")];
        b.layer = Layer(0);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000015504c5445000000000000ae8b61b69f8286581ea77c475f1d096e17a6860000000174524e530040e6d8660000004c4944415478da62a03160141414807384949414e112ca4a4a4a302946255c1c2115272517384731484914c61154c26380102e19b5343807c5390c42082d208b0419905c2d80c901040000ffff2f3c090f8ffce8ac0000000049454e44ae426082";
        index[nextId] = bytes32(hex"47cc6a8e17679da04a479e5d29625d737670c27b21f8ccfb334e6af61bf6885a");
        nextId++;
        b = blocks[bytes32(hex"80547b534287b04dc7e9afb751db65a7515fde92b8c2394ae341e3ae0955d519")];
        b.layer = Layer(0);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000015504c5445000000000000dbb180e7cba9a66e2cd29d60711010e7210e7f0000000174524e530040e6d8660000004c4944415478da62a03160141414807384949414e112ca4a4a4a302946255c1c2115272517384731484914c61154c26380102e19b5343807c5390c42082d208b0419905c2d80c901040000ffff2f3c090f8ffce8ac0000000049454e44ae426082";
        index[nextId] = bytes32(hex"80547b534287b04dc7e9afb751db65a7515fde92b8c2394ae341e3ae0955d519");
        nextId++;
        b = blocks[bytes32(hex"c0c9e42e9d271c94b57d055fc963197e4c62d5933e371a7449ef5d59f26be00a")];
        b.layer = Layer(0);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000015504c5445000000000000ead9d9ffffffa58d8dc9b2b2711010f69870510000000174524e530040e6d8660000004c4944415478da62a03160141414807384949414e112ca4a4a4a302946255c1c2115272517384731484914c61154c26380102e19b5343807c5390c42082d208b0419905c2d80c901040000ffff2f3c090f8ffce8ac0000000049454e44ae426082";
        index[nextId] = bytes32(hex"c0c9e42e9d271c94b57d055fc963197e4c62d5933e371a7449ef5d59f26be00a");
        nextId++;
        b = blocks[bytes32(hex"f41cb73ce9ba5c1f594bcdfd56e2d14e42d2ecc23f0a4863835bdd4baacd8b72")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c54450000000000007da2699bbc885e7253ff00007efb409c0000000174524e530040e6d866000000534944415478da62a00a1014141480b11995949414611c2165252525989490113247092747c549c945006698aa9052209ca3a2a4e404e3a01b20488cd14a8ac8ca545095215cad84e41f21b81a640e200000ffffea5f0b90848c25f90000000049454e44ae426082";
        index[nextId] = bytes32(hex"f41cb73ce9ba5c1f594bcdfd56e2d14e42d2ecc23f0a4863835bdd4baacd8b72");
        nextId++;
        b = blocks[bytes32(hex"b1ea1507d58429e4dfa3f444cd2e584ba8909c931969bbfb5f1e21e2ac8b758d")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c5445000000000000352410856f566a563fa98c6b35cdf9490000000174524e530040e6d866000000604944415478daaccfd11180200c0350d980c0390071821a37d00ddc7f17bf68eb9d9ff2c5bb062e5d7e3900eabc179263a29164fdc4009a43921cc7a9abcecfecd6ea48b1f27eb3990528ed31c9b10ef4409e0cc9a275daa779e58c270000ffff866f0d065247e95a0000000049454e44ae426082";
        index[nextId] = bytes32(hex"b1ea1507d58429e4dfa3f444cd2e584ba8909c931969bbfb5f1e21e2ac8b758d");
        nextId++;
        b = blocks[bytes32(hex"62223f0b03d25507f52a69efbbdbcfdc7579756a7a08a95a2f0e72ada31e32b8")];
        b.layer = Layer(0);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c5445000000000000c8fbfb9be0e0f1ffff75bdbd4053c1210000000174524e530040e6d866000000564944415478daac8fb11180300c03c906b198207fb040466003f65f86061335ee70e53feb6469fb6522a2e7de8091a003c8932e070a683ac5fd82e698ec7d399b0ca61bd4e07f22542658a9b13efa340e4f000000ffffe3a70b7c1e9e0e0b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"62223f0b03d25507f52a69efbbdbcfdc7579756a7a08a95a2f0e72ada31e32b8");
        nextId++;
        b = blocks[bytes32(hex"047228ad95cec16eb926f7cd21ac9cc9a3288d911a6c2917a24555eac7a2c0e2")];
        b.layer = Layer(1);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000374944415478da6262a03118b560d482510b462d18b5806e165c62603006616ce254f3811e03c35986c1084653d1a805940340000000ffff94c80439947873b80000000049454e44ae426082";
        index[nextId] = bytes32(hex"047228ad95cec16eb926f7cd21ac9cc9a3288d911a6c2917a24555eac7a2c0e2");
        nextId++;
        b = blocks[bytes32(hex"ce1f93a7afe9aad7ebb13c0add89c79d42b5e9b1272fdd1573aac99fe5d860d0")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000692f08d8a2a9300000000174524e530040e6d866000000284944415478da62a01f608452018c0e202a34144c852d45e2318486322051a22170cd80000000ffffb3a4056366b432730000000049454e44ae426082";
        index[nextId] = bytes32(hex"ce1f93a7afe9aad7ebb13c0add89c79d42b5e9b1272fdd1573aac99fe5d860d0");
        nextId++;
        b = blocks[bytes32(hex"bfac272e71cad64427175cd77d774a7884f98c7901ebc4909ada29d464c8981e")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000028b143000000cc9ab8ec0000000174524e530040e6d8660000003e4944415478da62c00b181d5841142b03a3030303832803630003034308184129d6100686500718c508a218181802204a04c008041418280480000000ffff40c405ad8a2523500000000049454e44ae426082";
        index[nextId] = bytes32(hex"bfac272e71cad64427175cd77d774a7884f98c7901ebc4909ada29d464c8981e");
        nextId++;
        b = blocks[bytes32(hex"a71068a671b554f75b7cc31ce4f8d63c377f276333d11989e77bc4a9205b5e42")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000294944415478daa4c0211100300800c097130b30b1280443109e3b2af0c6c547a0907838b63a0000ffff7250017908940adc0000000049454e44ae426082";
        index[nextId] = bytes32(hex"a71068a671b554f75b7cc31ce4f8d63c377f276333d11989e77bc4a9205b5e42");
        nextId++;
        b = blocks[bytes32(hex"9a132de8409f80845eaec43154ff43d7bd61df75e52d96b4ded0b64626e4c88a")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000794b11502f0566020e390000000174524e530040e6d8660000002a4944415478da62c0010244402463682806c5c2b56a558303036b686868a803480c22496300080000ffff65920776511a3f8f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"9a132de8409f80845eaec43154ff43d7bd61df75e52d96b4ded0b64626e4c88a");
        nextId++;
        b = blocks[bytes32(hex"fca4c5f86ef326916536dfdae74031d6960e41e10d38c624294334c3833974e2")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000002f4944415478da6262a03118b560d482510b462d18b560d40210602141ed4c2c62e90c030d462379045800080000ffff60530131658c7b950000000049454e44ae426082";
        index[nextId] = bytes32(hex"fca4c5f86ef326916536dfdae74031d6960e41e10d38c624294334c3833974e2");
        nextId++;
        b = blocks[bytes32(hex"4483a654781ca58fa6ba3590c74c005bce612263e17c70445d6cd167e55e900b")];
        b.layer = Layer(7);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000d600002c63f04d0000000174524e530040e6d866000000134944415478da62201bf040317e00080000ffff03c000197c38ad200000000049454e44ae426082";
        index[nextId] = bytes32(hex"4483a654781ca58fa6ba3590c74c005bce612263e17c70445d6cd167e55e900b");
        nextId++;
        b = blocks[bytes32(hex"1885fe71e225eade934ab7040d533bd49efc5d66e8f2d4b5aa42477ae9892ec9")];
        b.layer = Layer(9);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000004b4944415478da6262a03118b560d482510b869a0577efde6d180da2116801cd010b057affe31067c4c921c5f063c78e6108ca4c4d60905b7a0bc55c465afb806134990eb80580000000ffff78ff0b44c51816510000000049454e44ae426082";
        index[nextId] = bytes32(hex"1885fe71e225eade934ab7040d533bd49efc5d66e8f2d4b5aa42477ae9892ec9");
        nextId++;
        b = blocks[bytes32(hex"7411db1fe7a50d41767858710dc8b8432ac0c4fd26503ba78d2ed17789ce4f72")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000000000080dbda669cd55e0000000174524e530040e6d866000000224944415478da62a01608157560606060cc8c02510c99520e08416a0040000000ffff0567031c1296b7680000000049454e44ae426082";
        index[nextId] = bytes32(hex"7411db1fe7a50d41767858710dc8b8432ac0c4fd26503ba78d2ed17789ce4f72");
        nextId++;
        b = blocks[bytes32(hex"dd7231e98344a83b64e1ac7a07b39d2ecc2b21128681123a9030e17a12422527")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001d4944415478da622005b0ff3fc0c0f0f90003436203b15a00010000ffffca27045b28df4bb90000000049454e44ae426082";
        index[nextId] = bytes32(hex"dd7231e98344a83b64e1ac7a07b39d2ecc2b21128681123a9030e17a12422527");
        nextId++;
        b = blocks[bytes32(hex"24dd0364c2b2d0e6540c7deb5a0acf9177d47737a2bf41ca29b553eb69558ef9")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c5445000000000000933709ca4e11586029880000000174524e530040e6d866000000264944415478da622005fcff032299ffff075152ab564d60606090debd7b0203ed01200000ffff89c6081c0afc0fac0000000049454e44ae426082";
        index[nextId] = bytes32(hex"24dd0364c2b2d0e6540c7deb5a0acf9177d47737a2bf41ca29b553eb69558ef9");
        nextId++;
        b = blocks[bytes32(hex"ea5efa009543229e434689349c866e4d254811928ae8a1320abb82a36d3be53f")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000004a4944415478da6262a03118b560d482510b462d18b5801e16f8d2c307be94388085488790ed13165214b784c9c2d935ab1e13a587910aaedf4c691c6c26d770ba80a19fd100010000ffff17b506cc6c8ffcb10000000049454e44ae426082";
        index[nextId] = bytes32(hex"ea5efa009543229e434689349c866e4d254811928ae8a1320abb82a36d3be53f");
        nextId++;
        b = blocks[bytes32(hex"2df03e79022dc10f7539f01da354ffe10da3ef91f1e18bc7fd096db00c381de8")];
        b.layer = Layer(8);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000124944415478da62a02a50c01001040000ffff02a00021e29936ae0000000049454e44ae426082";
        index[nextId] = bytes32(hex"2df03e79022dc10f7539f01da354ffe10da3ef91f1e18bc7fd096db00c381de8");
        nextId++;
        b = blocks[bytes32(hex"f0ac7cf8c022008e16b983f22d22dae3a15b9b5abcc635bc5c20beb4d7c91800")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000003535355151511dd8d71d0000000174524e530040e6d866000000314944415478da62c00f42434024e3febf208aedff7f07060606f6afa10120ead6aa250c0c0caca11035340680000000ffff5f8a097e7a97a9b90000000049454e44ae426082";
        index[nextId] = bytes32(hex"f0ac7cf8c022008e16b983f22d22dae3a15b9b5abcc635bc5c20beb4d7c91800");
        nextId++;
        b = blocks[bytes32(hex"8580e735d58252637afd6fef159c826c5e7e6a5dcf1fe2d8398b3bf92c376d42")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000a66e2c00000080c0c2990000000174524e530040e6d8660000001a4944415478da62185c80310099624a808836303000020000ffff12f9018505211f590000000049454e44ae426082";
        index[nextId] = bytes32(hex"8580e735d58252637afd6fef159c826c5e7e6a5dcf1fe2d8398b3bf92c376d42");
        nextId++;
        b = blocks[bytes32(hex"041bf83549434251cc54c0632896c8d3176b48d06150048c1bce6b6102c4e90c")];
        b.layer = Layer(2);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000002c4944415478da6262a03118b560d482510b462d18b5607858a0202796c63098c168248f5a403900040000ffff01a900e96b1795ed0000000049454e44ae426082";
        index[nextId] = bytes32(hex"041bf83549434251cc54c0632896c8d3176b48d06150048c1bce6b6102c4e90c");
        nextId++;
        b = blocks[bytes32(hex"591f84c8a41edd0013624b89d5e6b96cd3b0c6f1e214d4ea13a35639412f07e6")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000710cc759e1a3b70000000174524e530040e6d8660000003f4944415478da6cc6b10d40501000d017f989465cab905843c50a463a7b8bd368245ef57c1c741771d3174ba538d32e8dd83061c58019ed7df3eb090000fffff8b007a7fc0c1ce10000000049454e44ae426082";
        index[nextId] = bytes32(hex"591f84c8a41edd0013624b89d5e6b96cd3b0c6f1e214d4ea13a35639412f07e6");
        nextId++;
        b = blocks[bytes32(hex"54917cb8cff2411930ac1b1d36a674f855c6b16c8662806266734b5f718a9890")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001b4944415478da62200530fe6760604a66606048265a0b200000ffff54c701c9074dcd420000000049454e44ae426082";
        index[nextId] = bytes32(hex"54917cb8cff2411930ac1b1d36a674f855c6b16c8662806266734b5f718a9890");
        nextId++;
        b = blocks[bytes32(hex"274ae610f9d7dec1e425c54ad990e7d265ba95c4f84683be4333542088ecb8e7")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000384944415478da6262a03118b5600458c042849a8978e4f229f5c1440ae5074710e553e20386d1643a6ac1a805a3168c5a400500080000ffff2ea40355b76925600000000049454e44ae426082";
        index[nextId] = bytes32(hex"274ae610f9d7dec1e425c54ad990e7d265ba95c4f84683be4333542088ecb8e7");
        nextId++;
        b = blocks[bytes32(hex"6a400b1508bfd84ab2f4cb067d6d74dc46f74cdae7efd8b2a2d990c9f037e426")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000005c390fc775146685ecb00000000174524e530040e6d866000000214944415478da62a012600c0d7500d1995260aa561e4c89b052cb7c40000000ffffe5a902a473b175720000000049454e44ae426082";
        index[nextId] = bytes32(hex"6a400b1508bfd84ab2f4cb067d6d74dc46f74cdae7efd8b2a2d990c9f037e426");
        nextId++;
        b = blocks[bytes32(hex"3e6bc8fc06a569840c9490f8122e6b7f08a7598486649b64477b548602362516")];
        b.layer = Layer(9);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000005959590040ff401523b30000000174524e530040e6d8660000001b4944415478da621838c01aea00a2a4563b20f1700140000000ffff5249023a69668c5f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"3e6bc8fc06a569840c9490f8122e6b7f08a7598486649b64477b548602362516");
        nextId++;
        b = blocks[bytes32(hex"2c382a7f1f32a6a2d0e9b0d378cb95e3dad70fe6909ff13888fe2a250bd10bb0")];
        b.layer = Layer(12);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000dfdfdf337edd570000000174524e530040e6d866000000134944415478da62a015603c00a600010000ffff04e700c22f5ee81e0000000049454e44ae426082";
        index[nextId] = bytes32(hex"2c382a7f1f32a6a2d0e9b0d378cb95e3dad70fe6909ff13888fe2a250bd10bb0");
        nextId++;
        b = blocks[bytes32(hex"8968ce85cb55abb5d9f6f678baeeb565638b6bad5d9be0ea2e703a34f4593566")];
        b.layer = Layer(8);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000124944415478da62a00a50c02903080000ffff03a0002126a77fa30000000049454e44ae426082";
        index[nextId] = bytes32(hex"8968ce85cb55abb5d9f6f678baeeb565638b6bad5d9be0ea2e703a34f4593566");
        nextId++;
        b = blocks[bytes32(hex"c3075202748482832362d1b854d8274a38bf56c5ad38d418e590f46113ff10b1")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb0000000f504c5445000000000000690c458c0d5bad21606331bdda0000000174524e530040e6d866000000324944415478da621828c02828c8282808e328290a2a29423982c6868cc6863019174746174798264101101a0c00100000ffffe5da0307c5d3f79f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"c3075202748482832362d1b854d8274a38bf56c5ad38d418e590f46113ff10b1");
        nextId++;
        b = blocks[bytes32(hex"971f7c3d5d14436a3b5ef2d658445ea527464a6409bd5f9a44f3d72e30d1eba8")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000000000055555535d909f10000000174524e530040e6d8660000001a4944415478da6280034608c5e680856242911b0800080000ffff990c011c0109f9070000000049454e44ae426082";
        index[nextId] = bytes32(hex"971f7c3d5d14436a3b5ef2d658445ea527464a6409bd5f9a44f3d72e30d1eba8");
        nextId++;
        b = blocks[bytes32(hex"1f7b5107846b1e32944ccf8aedeaa871fc859506f51e7d12d6e9ad594a4d7619")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb00000012504c54450000000060c3e4eb173cc300000000d604049007f3910000000174524e530040e6d866000000334944415478da622001300a0a22f15890d8824aaa0108554aaaa170092125a5d000b82a252475c6c6c6060c431600020000ffff8e2f043f67fbc8370000000049454e44ae426082";
        index[nextId] = bytes32(hex"1f7b5107846b1e32944ccf8aedeaa871fc859506f51e7d12d6e9ad594a4d7619");
        nextId++;
        b = blocks[bytes32(hex"d35b2735e5fcc86991c8501996742b3b8c35772d92b69859de58ddd3559be46c")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c54450000008119b7b261dc8e83430a0000000174524e530040e6d866000000254944415478da62c00f4243402463682a88620d8d84506051d6d0d05006ba0140000000fffff131041f8da125b90000000049454e44ae426082";
        index[nextId] = bytes32(hex"d35b2735e5fcc86991c8501996742b3b8c35772d92b69859de58ddd3559be46c");
        nextId++;
        b = blocks[bytes32(hex"2004722753f61acb2cefde9b14d2c01c6bcb589d749b4ea616b4e47d83fdb056")];
        b.layer = Layer(5);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c544500000028b1432c95412964343ee6dbfc0000000174524e530040e6d8660000001c4944415478da62a016106001531a5c608a871959900a00100000ffff23b6006aaf575b4b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"2004722753f61acb2cefde9b14d2c01c6bcb589d749b4ea616b4e47d83fdb056");
        nextId++;
        b = blocks[bytes32(hex"05a5afe13f23e20e6cebabae910a492c91f4b862c2e1a5822914be79ab519bd8")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000000000086581eeeb664cd0000000174524e530040e6d866000000244944415478da62a01f6084520e6006636828980a5b0a1685f0184443706806040000ffff718d02fe68c219c00000000049454e44ae426082";
        index[nextId] = bytes32(hex"05a5afe13f23e20e6cebabae910a492c91f4b862c2e1a5822914be79ab519bd8");
        nextId++;
        b = blocks[bytes32(hex"ac5194b2986dd9939aedf83029a6e0a1d7d482eb00a5dafa05fc0aaa9b616582")];
        b.layer = Layer(9);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000c9c9c9b1b1b1dfe0055e0000000174524e530040e6d8660000002a4944415478da62a0096081508c50ae0384213a0542858029d508b092d0506441d6001c2602020000ffff944e033f6ebf94330000000049454e44ae426082";
        index[nextId] = bytes32(hex"ac5194b2986dd9939aedf83029a6e0a1d7d482eb00a5dafa05fc0aaa9b616582");
        nextId++;
        b = blocks[bytes32(hex"f94798c1aedb2dce1990e0dae94c15178ddd4229aff8031c9a5b7a77743a34d4")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000a66e2c00000080c0c2990000000174524e530040e6d866000000244944415478da62a01f6084520e6006636828980a5b0a1685f0184443706806040000ffff718d02fe68c219c00000000049454e44ae426082";
        index[nextId] = bytes32(hex"f94798c1aedb2dce1990e0dae94c15178ddd4229aff8031c9a5b7a77743a34d4");
        nextId++;
        b = blocks[bytes32(hex"15854f7a2b735373aa76722c01e2f289d8b18cb1a70575796be435e4ce55e57a")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000008d8d8db4b4b44f7060b00000000174524e530040e6d866000000284944415478da62a01884863a30303030eeff3f81818181ed6ae805040515842aa10800020000ffff69b20a7394f432b40000000049454e44ae426082";
        index[nextId] = bytes32(hex"15854f7a2b735373aa76722c01e2f289d8b18cb1a70575796be435e4ce55e57a");
        nextId++;
        b = blocks[bytes32(hex"d91f640608a7c1b2b750276d97d603512a02f4b84ca13c875a585b12a24320c2")];
        b.layer = Layer(5);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001a4944415478da62201630fe676060f800c509446b03040000ffffa0210341317dad5b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"d91f640608a7c1b2b750276d97d603512a02f4b84ca13c875a585b12a24320c2");
        nextId++;
        b = blocks[bytes32(hex"6bb15b5e619a28950bae0eb6a03f13daea1b430ef5ded0c5606b335f5b077cda")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000003d4944415478da624006ccfc0d0cc2ff0d18e4ff3f6090ffff81811f447f7ec0603ff300033fc303067986070ce20c20f601060e0607062200200000ffffb9320f35dcea59b30000000049454e44ae426082";
        index[nextId] = bytes32(hex"6bb15b5e619a28950bae0eb6a03f13daea1b430ef5ded0c5606b335f5b077cda");
        nextId++;
        b = blocks[bytes32(hex"7a8b4abb14bfe7b505902c23a9c4e59e5a70c7daf6e28a5f83049c13142cde5e")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000dc1d1d9b9a25510000000174524e530040e6d8660000002e4944415478da628001c6d05010c51a1aea808be25ab5aa818181413434348081812134343484816e00100000ffff612d08a80a65c2450000000049454e44ae426082";
        index[nextId] = bytes32(hex"7a8b4abb14bfe7b505902c23a9c4e59e5a70c7daf6e28a5f83049c13142cde5e");
        nextId++;
        b = blocks[bytes32(hex"72efa89c7645580b2d0d03f51f1a2b64a425844a5cd69f1b3bb6609a4a06e47f")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000001a43c81637a4142c7c2bcdbdcc0000000174524e530040e6d866000000314944415478da62200aac5a05229942431b18181838c1145beeaa30060606c60d0c2b40d401b03a46065a0140000000ffff35c90742649028070000000049454e44ae426082";
        index[nextId] = bytes32(hex"72efa89c7645580b2d0d03f51f1a2b64a425844a5cd69f1b3bb6609a4a06e47f");
        nextId++;
        b = blocks[bytes32(hex"fc1c0134d4441a1d7c81368f23d7dfcdeab3776687073c12af9d268e00d6c0a8")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000c28946a66e2cc99988650000000174524e530040e6d866000000184944415478da621830c0b6044c717020533801200000ffff22f000cb47eae9030000000049454e44ae426082";
        index[nextId] = bytes32(hex"fc1c0134d4441a1d7c81368f23d7dfcdeab3776687073c12af9d268e00d6c0a8");
        nextId++;
        b = blocks[bytes32(hex"6ced067c29d04b367c1f3cb5e7721ad5a662f5e338ee3e10c7d64d9d109ed606")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c54450000000000002a2a2a02692f080000000174524e530040e6d866000000354944415478da62c00142434024636a2888629d1aeac0c0c0201a1a1a80490542284710c920cae000d600318495816a00100000ffff912107d1f05714420000000049454e44ae426082";
        index[nextId] = bytes32(hex"6ced067c29d04b367c1f3cb5e7721ad5a662f5e338ee3e10c7d64d9d109ed606");
        nextId++;
        b = blocks[bytes32(hex"66a6c35fd6db8b93449f29befe26e2e4bcb09799d56216ada0ef901c53cf439f")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000e226260000001337790f0000000174524e530040e6d866000000434944415478da6240038c0c0e208ad5350044b386ba82a8d0d0d000060616d1d0d05090586868084830c005240756c7c01800d19d0031054a39408da40200040000ffff0b6408c6ffc386f40000000049454e44ae426082";
        index[nextId] = bytes32(hex"66a6c35fd6db8b93449f29befe26e2e4bcb09799d56216ada0ef901c53cf439f");
        nextId++;
        b = blocks[bytes32(hex"85c5daead3bc85feb0d62d1f185f82fdc2627bdbc7f1f2ffed1c721c6fcc4b4d")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb0000000f504c544500000000000026314affffffffd8001025743b0000000174524e530040e6d866000000364944415478da622005080a2098824a8a302ea392928a9292229ca304e7300883004c97a010920c03a3a0a0a020c3500580000000ffff347603a082b51cae0000000049454e44ae426082";
        index[nextId] = bytes32(hex"85c5daead3bc85feb0d62d1f185f82fdc2627bdbc7f1f2ffed1c721c6fcc4b4d");
        nextId++;
        b = blocks[bytes32(hex"3d1f5637dfc56d4147818053fdcc0c0a35886121b7e4fc1a7cff584e4bb6414f")];
        b.layer = Layer(8);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000ffffffa5d99fdd0000000174524e530040e6d866000000124944415478da62a01a10c12a0a080000ffff02180015518fefb80000000049454e44ae426082";
        index[nextId] = bytes32(hex"3d1f5637dfc56d4147818053fdcc0c0a35886121b7e4fc1a7cff584e4bb6414f");
        nextId++;
        b = blocks[bytes32(hex"64b53b34ebe074820dbda2f80085c52f209d5eba6c783abdae0a19950f0787ec")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c54450000004c4c4c63636367c20ce50000000174524e530040e6d8660000001f4944415478da62200584868048c6d45030351542858632d00100020000ffff4d8702fb0f1c34300000000049454e44ae426082";
        index[nextId] = bytes32(hex"64b53b34ebe074820dbda2f80085c52f209d5eba6c783abdae0a19950f0787ec");
        nextId++;
        b = blocks[bytes32(hex"833ca1b7f8f2ce28f7003fb78b72e259d5a484b13477ad8212edb844217225ac")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000a66e2c00000080c0c2990000000174524e530040e6d8660000001f4944415478da621830c01a02a6585890798c01c814d302b86a40000000ffff2fa301ff0f47294e0000000049454e44ae426082";
        index[nextId] = bytes32(hex"833ca1b7f8f2ce28f7003fb78b72e259d5a484b13477ad8212edb844217225ac");
        nextId++;
        b = blocks[bytes32(hex"44c2482a71c9d39dac1cf9a7daf6de80db79735c0042846cb9d47f85ccc3ba9b")];
        b.layer = Layer(2);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000364944415478da6262a03118b560d4826166810301fec080d148a6d882018dc8a1958a1c466e300d8a7c3038cba0e1535400020000ffff98f50225e7db2e020000000049454e44ae426082";
        index[nextId] = bytes32(hex"44c2482a71c9d39dac1cf9a7daf6de80db79735c0042846cb9d47f85ccc3ba9b");
        nextId++;
        b = blocks[bytes32(hex"4acd7797c5821ccc56add3739a55bcfd4e4cfd72b30274ec6c156b6c1d9185eb")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000a66e2c9730e2d80000000174524e530040e6d8660000002f4944415478da62a03fd05a05229956ad9ac0c0c020b5820b4c4179108a11423184ad7200518ca10c0c80000000ffff51890b8e68fe91ee0000000049454e44ae426082";
        index[nextId] = bytes32(hex"4acd7797c5821ccc56add3739a55bcfd4e4cfd72b30274ec6c156b6c1d9185eb");
        nextId++;
        b = blocks[bytes32(hex"c0ac7bb45040825a6d9a997dc99a6ec94027d27133145018c0561b880ecdb389")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000214944415478da62c009fe313030ce656060e480605c8011861bb04a03020000ffff7e1c023207c1f3860000000049454e44ae426082";
        index[nextId] = bytes32(hex"c0ac7bb45040825a6d9a997dc99a6ec94027d27133145018c0561b880ecdb389");
        nextId++;
        b = blocks[bytes32(hex"a756817780c8e400f79cdd974270d70e0cd172aa662d7cf7c9fe0b63a4a71d95")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000264944415478da620083100606867f10ccf89f8181f1230303b3650303830003a500100000ffff8fa8050f2a3982bb0000000049454e44ae426082";
        index[nextId] = bytes32(hex"a756817780c8e400f79cdd974270d70e0cd172aa662d7cf7c9fe0b63a4a71d95");
        nextId++;
        b = blocks[bytes32(hex"71c5ce05a579f7a6bbc9fb7517851ae9394c8cb6e4fcad99245ce296b6a3c541")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000a66e2c00000080c0c2990000000174524e530040e6d866000000244944415478da62a01f6084520e8c481443000a251a02511300a69816c03503020000ffff46850284e24691b90000000049454e44ae426082";
        index[nextId] = bytes32(hex"71c5ce05a579f7a6bbc9fb7517851ae9394c8cb6e4fcad99245ce296b6a3c541");
        nextId++;
        b = blocks[bytes32(hex"283597377fbec1d21fb9d58af5fa0c43990b1f7c2fc6168412ceb4837d9bf86c")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c54450000003d2f1e000000c8d065ca0000000174524e530040e6d8660000002b4944415478da62c0014403c054680812c5181a0aa2b856ad6a008985824419434321a2340680000000ffff28a206e959ceed270000000049454e44ae426082";
        index[nextId] = bytes32(hex"283597377fbec1d21fb9d58af5fa0c43990b1f7c2fc6168412ceb4837d9bf86c");
        nextId++;
        b = blocks[bytes32(hex"bb1f372f67259011c2e9e7346c8a03a11f260853a1fe248ddd29540219788747")];
        b.layer = Layer(10);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000ffd926bf0c26860000000174524e530040e6d866000000154944415478da62a00348805002949801080000ffff1df8007172dffd610000000049454e44ae426082";
        index[nextId] = bytes32(hex"bb1f372f67259011c2e9e7346c8a03a11f260853a1fe248ddd29540219788747");
        nextId++;
        b = blocks[bytes32(hex"d5de5c20969a9e22f93842ca4d65bac0c0387225cee45a944a14f03f9221fd4a")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000004b4944415478da6262a03118b560d482510be860010b01f9ff2498c5488e050ca79ffd2d84b14da598fbb1884dc0e71026125dc588c3a58c0316070ca3c974d482510b86810580000000ffffcf460a37173d31500000000049454e44ae426082";
        index[nextId] = bytes32(hex"d5de5c20969a9e22f93842ca4d65bac0c0387225cee45a944a14f03f9221fd4a");
        nextId++;
        b = blocks[bytes32(hex"b040fea53c68833d052aa3e7c8552b04390371501b9976c938d3bd8ec66e4734")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000ffffff1a6ed56fb0c5a50000000174524e530040e6d8660000001a4944415478da62201d3086868228a655ab18e80700010000ffffdec602021e01f4d60000000049454e44ae426082";
        index[nextId] = bytes32(hex"b040fea53c68833d052aa3e7c8552b04390371501b9976c938d3bd8ec66e4734");
        nextId++;
        b = blocks[bytes32(hex"74ca947c09f7b62348c4f3c81b91973356ec81529d6220ff891012154ce517c7")];
        b.layer = Layer(9);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000704944415478da6262a03118b560d482510b462dc00276eedcd940330b6086235b42f3206218f27130b27df09f963ef8df1a28826ec97f2c988191121f802ca95eff06660ecc523080895312078c2043907df2f8f51706649a521fa00717dcf019477ec0cd66a45184c3cd05040000ffffe2512fe56a94b4330000000049454e44ae426082";
        index[nextId] = bytes32(hex"74ca947c09f7b62348c4f3c81b91973356ec81529d6220ff891012154ce517c7");
        nextId++;
        b = blocks[bytes32(hex"30146eda149865d57c6ae9dac707d809120563fadb039d7bca3231041bea6b2e")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000002b4944415478da62c0007f191818ff333030ff3fc0c0febf8181f9770303bbe70106860e067200200000ffff2b95085cdd2d2f2d0000000049454e44ae426082";
        index[nextId] = bytes32(hex"30146eda149865d57c6ae9dac707d809120563fadb039d7bca3231041bea6b2e");
        nextId++;
        b = blocks[bytes32(hex"8394d1b7af0d52a25908dc9123cc00aa0670debcac95a76c3e9a20dd6c7e7c23")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000068461f000000b80d8ed70000000174524e530040e6d8660000001f4944415478da621830c01a02a6585890798c01c814d302b86a40000000ffff2fa301ff0f47294e0000000049454e44ae426082";
        index[nextId] = bytes32(hex"8394d1b7af0d52a25908dc9123cc00aa0670debcac95a76c3e9a20dd6c7e7c23");
        nextId++;
        b = blocks[bytes32(hex"eb787e7727b2d8d912a02d9ad4c30c964b40f4cebe754bb4d3bfb09959565c91")];
        b.layer = Layer(11);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000000000055555535d909f10000000174524e530040e6d866000000604944415478da7ccdb10dc4200c85e1df050c71d330c4817457d3c03414648334f194d12352bac4b2fc59966cf310212dfe53d5fc10d15dd38ffb007a2e3bd0305157aa6d60037e37f10b25bd62f35a9858d531cbfa50434f8b0dce000000ffffa30d1684d4b69ae10000000049454e44ae426082";
        index[nextId] = bytes32(hex"eb787e7727b2d8d912a02d9ad4c30c964b40f4cebe754bb4d3bfb09959565c91");
        nextId++;
        b = blocks[bytes32(hex"6a36bcf4268827203e8a3f374b49c1ff69b62623e234e96858ff0f2d32fbf268")];
        b.layer = Layer(12);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000ffc926d3ca64d80000000174524e530040e6d866000000184944415478da62a0366004110d0c0c0c0e602e200000ffff06ef00c28387215b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"6a36bcf4268827203e8a3f374b49c1ff69b62623e234e96858ff0f2d32fbf268");
        nextId++;
        b = blocks[bytes32(hex"2f237bd68c6e318a6d0aa26172032a8a73a5e0e968ad3d74ef1178e64d209b48")];
        b.layer = Layer(4);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000a66e2cb134b2d70000000174524e530040e6d8660000001d4944415478da62a004308270230303e34106068683589500020000ffff340b0207ed983fca0000000049454e44ae426082";
        index[nextId] = bytes32(hex"2f237bd68c6e318a6d0aa26172032a8a73a5e0e968ad3d74ef1178e64d209b48");
        nextId++;
        b = blocks[bytes32(hex"ad07511765ae4becdc5300c486c7806cd661840b0670d0f6670e8c4014de37b0")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001d4944415478da62c00a0418181842a078110303c324067201200000ffff79f001ed2e0ca9360000000049454e44ae426082";
        index[nextId] = bytes32(hex"ad07511765ae4becdc5300c486c7806cd661840b0670d0f6670e8c4014de37b0");
        nextId++;
        b = blocks[bytes32(hex"49e0947b696384a658eeca7f5746ffbdd90a5f5526f8d15e6396056b7a0dc8af")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000d7d7d7dd6bdeda0000000174524e530040e6d866000000214944415478da62a012600c0d7500518e01208a3531024c4104a90100010000ffff324a03ab83e6711a0000000049454e44ae426082";
        index[nextId] = bytes32(hex"49e0947b696384a658eeca7f5746ffbdd90a5f5526f8d15e6396056b7a0dc8af");
        nextId++;
        b = blocks[bytes32(hex"c1695b389d89c71dc7afd5111f17f6540b3a28261e4d2bf5631c1484f322fc68")];
        b.layer = Layer(6);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c5445000000f0f0f0328dfdfd3232d47923120000000174524e530040e6d866000000214944415478da62a012600d0d7560606060ccaa07510c500a22480d00080000ffff5dd3042db0f16dd40000000049454e44ae426082";
        index[nextId] = bytes32(hex"c1695b389d89c71dc7afd5111f17f6540b3a28261e4d2bf5631c1484f322fc68");
        nextId++;
        b = blocks[bytes32(hex"09c36cad1064f6107d2e3bef439f87a16c8ef2e95905a827b2ce7f111dd801d7")];
        b.layer = Layer(5);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000002858b12c5195293e64cf044ab90000000174524e530040e6d8660000001c4944415478da62a016106001531a5c608a871959900a00100000ffff23b6006aaf575b4b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"09c36cad1064f6107d2e3bef439f87a16c8ef2e95905a827b2ce7f111dd801d7");
        nextId++;
        b = blocks[bytes32(hex"eb92e34266f6fa01c275db8379f6a521f15ab6f96297fe3266df2fe6b0e1422e")];
        b.layer = Layer(3);
        b.dataMale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c544500000000000085561ea66e2c6852a3220000000174524e530040e6d866000000264944415478da6240800030c978014cb143286908a57f004c31432886030c740780000000ffffcd2f05565fc3044d0000000049454e44ae426082";
        index[nextId] = bytes32(hex"eb92e34266f6fa01c275db8379f6a521f15ab6f96297fe3266df2fe6b0e1422e");
        nextId++;
        b = blocks[bytes32(hex"1892c4c9cf47baf2c613f184114519fe8208c2bebabb732405aeac1c3031dc2b")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000002d6b6200000080dbda32008fdd0000000174524e530040e6d866000000354944415478da62200a888680a955ab4024d3bffd0d20ead77a30b5320b443186863a303030b03230e0a41889a6b00040000000ffff4bc30b42e46330a00000000049454e44ae426082";
        index[nextId] = bytes32(hex"1892c4c9cf47baf2c613f184114519fe8208c2bebabb732405aeac1c3031dc2b");
        nextId++;
        b = blocks[bytes32(hex"250be814c80d8ca10bbef531b679392db8221a6fab289a6b5e637df663f48699")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c544500000000000022900000558084ff9e8a0000000174524e530040e6d8660000004d4944415478da6240078c0e608a7d0298927b02a6a4b780a9bcb76015bb7783d430be7b07a2d857ad0629656b6002530c0c208a098562234c4935302d01f318413c46060607346701020000ffff3d76119d224fcf200000000049454e44ae426082";
        index[nextId] = bytes32(hex"250be814c80d8ca10bbef531b679392db8221a6fab289a6b5e637df663f48699");
        nextId++;
        b = blocks[bytes32(hex"cd87356aa78c4fcb95e51f57578570d377440e347e0869cf1b4749d5a26340b5")];
        b.layer = Layer(8);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000c42110a2e982d40000000174524e530040e6d866000000124944415478da62a01a90c12a0a080000ffff02c8001d72b777ad0000000049454e44ae426082";
        index[nextId] = bytes32(hex"cd87356aa78c4fcb95e51f57578570d377440e347e0869cf1b4749d5a26340b5");
        nextId++;
        b = blocks[bytes32(hex"4fa682c6066fcc513a0511418aa85a0037ac59a899e9491c512b63e253697a8c")];
        b.layer = Layer(5);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000384944415478da6262a03118b560d482510b462da09605da65536682302131b22db8da95934e8cd88080d154346ac1a80574b000100000ffffc4410bcb596becd80000000049454e44ae426082";
        index[nextId] = bytes32(hex"4fa682c6066fcc513a0511418aa85a0037ac59a899e9491c512b63e253697a8c");
        nextId++;
        b = blocks[bytes32(hex"36f07f03014f047728880d9f390629140a5e7c44477290695c4c1ddda356d365")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000002f4944415478da62c00bea181818fe333030fe6f60603ed8c0c0dc00c1ec0c58302312666e606067079b00080000ffffd1030b1b1e3ca1240000000049454e44ae426082";
        index[nextId] = bytes32(hex"36f07f03014f047728880d9f390629140a5e7c44477290695c4c1ddda356d365");
        nextId++;
        b = blocks[bytes32(hex"68107f52c261820bd73e4046eb3fb5d5a1e0926611562c07054a3b89334cef34")];
        b.layer = Layer(12);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001a4944415478da62a03a70606060486060603000f300010000ffff08c000d178549d360000000049454e44ae426082";
        index[nextId] = bytes32(hex"68107f52c261820bd73e4046eb3fb5d5a1e0926611562c07054a3b89334cef34");
        nextId++;
        b = blocks[bytes32(hex"66a6c35fd6db8b93449f29befe26e2e4bcb09799d56216ada0ef901c53cf439f")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000e226261ed2bbd80000000174524e530040e6d866000000454944415478da6240011a0c0c4c2b191898ea0b1858ff3730b0fd7fc020dedcc0c0cff081819de101031bc307061e86040616060730cdc6e0c0c0c4e0c0800700020000ffff86820ac86b32f7cc0000000049454e44ae426082";
        index[nextId] = bytes32(hex"66a6c35fd6db8b93449f29befe26e2e4bcb09799d56216ada0ef901c53cf439f");
        nextId++;
        b = blocks[bytes32(hex"dd7231e98344a83b64e1ac7a07b39d2ecc2b21128681123a9030e17a12422527")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001c4944415478da62200530ff6f6060f8dec0c0904cb41640000000ffff9e67035db5442bc60000000049454e44ae426082";
        index[nextId] = bytes32(hex"dd7231e98344a83b64e1ac7a07b39d2ecc2b21128681123a9030e17a12422527");
        nextId++;
        b = blocks[bytes32(hex"d395cf4acda004fbc9963f85c65bf3f190c2aceb0744a535d543bc261caf6ff0")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000fff68e5319653e0000000174524e530040e6d8660000004f4944415478da624001c20c0c0ce71d1898df3730b0d7fd60e0fdff8041feff0106f6c31f18f8955e30c8b31430f0305430c8305430f0301430c831043070332c60e06330606061c00a00010000ffff3f7f0e31b0bc620f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"d395cf4acda004fbc9963f85c65bf3f190c2aceb0744a535d543bc261caf6ff0");
        nextId++;
        b = blocks[bytes32(hex"c1695b389d89c71dc7afd5111f17f6540b3a28261e4d2bf5631c1484f322fc68")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c5445000000f0f0f0328dfdfd3232d47923120000000174524e530040e6d8660000001f4944415478da62a02e600c0d75005159f5208a014a4104290280000000ffff3f3b04294160e2b30000000049454e44ae426082";
        index[nextId] = bytes32(hex"c1695b389d89c71dc7afd5111f17f6540b3a28261e4d2bf5631c1484f322fc68");
        nextId++;
        b = blocks[bytes32(hex"041bf83549434251cc54c0632896c8d3176b48d06150048c1bce6b6102c4e90c")];
        b.layer = Layer(2);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000002c4944415478da6262a03118b560d482510b462d18b560f858a0202796c63058c168248f5a403900040000fffffeb200e9e342816b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"041bf83549434251cc54c0632896c8d3176b48d06150048c1bce6b6102c4e90c");
        nextId++;
        b = blocks[bytes32(hex"bad0fc475e9d35de67c426fc37eebb7fa38141bc2135fabd5504a911e1b05540")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000ffffffa5d99fdd0000000174524e530040e6d866000000454944415478da62c00a6c191818eb181818ff3b30b0ff5fc0c07cff0103fbca030cdc1d0f18d8390218b8581218e4181218d8180a18d8181c1838181418700040000000ffff367b0a7764b3c52f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"bad0fc475e9d35de67c426fc37eebb7fa38141bc2135fabd5504a911e1b05540");
        nextId++;
        b = blocks[bytes32(hex"44c2482a71c9d39dac1cf9a7daf6de80db79735c0042846cb9d47f85ccc3ba9b")];
        b.layer = Layer(2);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000003d4944415478da6262a03118b560d482510b28b0a027ca7e26d55d43134387761c0c68900c9af8601ad4ae1d14c134f88a8a41979b877e710d080000fffff2580c5583685c2e0000000049454e44ae426082";
        index[nextId] = bytes32(hex"44c2482a71c9d39dac1cf9a7daf6de80db79735c0042846cb9d47f85ccc3ba9b");
        nextId++;
        b = blocks[bytes32(hex"6ced067c29d04b367c1f3cb5e7721ad5a662f5e338ee3e10c7d64d9d109ed606")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c54450000000000002a2a2a02692f080000000174524e530040e6d8660000003c4944415478da62c00f42434024636a2888629d1aeac0c0c0201a1a1a8049054228c70001903606071130c58044854028113825c0403c00040000ffffd90d09b1ff89a89f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"6ced067c29d04b367c1f3cb5e7721ad5a662f5e338ee3e10c7d64d9d109ed606");
        nextId++;
        b = blocks[bytes32(hex"7411db1fe7a50d41767858710dc8b8432ac0c4fd26503ba78d2ed17789ce4f72")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000000000080dbda669cd55e0000000174524e530040e6d866000000234944415478da62a03208157560606060cc8c02510c9952604a8495627301010000ffffca38028b89ad68880000000049454e44ae426082";
        index[nextId] = bytes32(hex"7411db1fe7a50d41767858710dc8b8432ac0c4fd26503ba78d2ed17789ce4f72");
        nextId++;
        b = blocks[bytes32(hex"d10bc0475e2a0eea9f6aca91e6e82c6416f894f27fc26bb0735f29b84c54a3e6")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000ffba00ff2a00ec23aa7c0000000174524e530040e6d8660000001b4944415478da62201f888a40680730c9380199477500080000ffff7648013b91a176490000000049454e44ae426082";
        index[nextId] = bytes32(hex"d10bc0475e2a0eea9f6aca91e6e82c6416f894f27fc26bb0735f29b84c54a3e6");
        nextId++;
        b = blocks[bytes32(hex"a0a2010e841ab7b343263c98f47a16b88656913e1353d96914f5fe492511893f")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000e65700fdf2de4e0000000174524e530040e6d866000000324944415478da62c0096c181818fe333030fe6f80e0d6030ccc0c10cc04c50c0c0f3031e303060666106e009902080000ffff4fd30f33b75f06fe0000000049454e44ae426082";
        index[nextId] = bytes32(hex"a0a2010e841ab7b343263c98f47a16b88656913e1353d96914f5fe492511893f");
        nextId++;
        b = blocks[bytes32(hex"0e6769a10f786458ca82b57684746fe8899e35f7772543acb6a8869c4ac780cd")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000e226261ed2bbd80000000174524e530040e6d8660000001b4944415478da62c0001c0c0c0c120c0c0c16509a3200080000ffff1f400071228f4c0b0000000049454e44ae426082";
        index[nextId] = bytes32(hex"0e6769a10f786458ca82b57684746fe8899e35f7772543acb6a8869c4ac780cd");
        nextId++;
        b = blocks[bytes32(hex"30146eda149865d57c6ae9dac707d809120563fadb039d7bca3231041bea6b2e")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000002b4944415478da62c0007f191818ff333030ff3fc0c0febf8181f9770303bbe70106860e067200200000ffff2b95085cdd2d2f2d0000000049454e44ae426082";
        index[nextId] = bytes32(hex"30146eda149865d57c6ae9dac707d809120563fadb039d7bca3231041bea6b2e");
        nextId++;
        b = blocks[bytes32(hex"09c36cad1064f6107d2e3bef439f87a16c8ef2e95905a827b2ce7f111dd801d7")];
        b.layer = Layer(5);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb0000000f504c54450000002858b12c5195000000293e648e458eca0000000174524e530040e6d866000000234944415478da6218848091814100ce615260508273981d184cb02ba33700040000ffff7ae900dec03f69060000000049454e44ae426082";
        index[nextId] = bytes32(hex"09c36cad1064f6107d2e3bef439f87a16c8ef2e95905a827b2ce7f111dd801d7");
        nextId++;
        b = blocks[bytes32(hex"74ca947c09f7b62348c4f3c81b91973356ec81529d6220ff891012154ce517c7")];
        b.layer = Layer(9);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000704944415478da6262a03118b560d482510b462dc00276eedcd940330b6086235b42f3206218f27130b27df09f963ef8df1a28826ec97f2c988191121f802ca95eff06660ecc523080895312078c2043907df2f8f51706649a521fa00717dcf019477ec0cd66a45184c3cd05040000ffffe2512fe56a94b4330000000049454e44ae426082";
        index[nextId] = bytes32(hex"74ca947c09f7b62348c4f3c81b91973356ec81529d6220ff891012154ce517c7");
        nextId++;
        b = blocks[bytes32(hex"6bb15b5e619a28950bae0eb6a03f13daea1b430ef5ded0c5606b335f5b077cda")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000004c4944415478da62800326060626970606d6fc090ce2ff1730f0ff7fc020ffff0384fe7c80c17ee603067e860f0cf20c0f18c419206c2e0607062606070616060706060605062c00100000ffff1b1511db1ceba4170000000049454e44ae426082";
        index[nextId] = bytes32(hex"6bb15b5e619a28950bae0eb6a03f13daea1b430ef5ded0c5606b335f5b077cda");
        nextId++;
        b = blocks[bytes32(hex"1004d2d00ccf8794739c7b7cbbe6048841f4c8af046b37d59e9a801a167544e2")];
        b.layer = Layer(5);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000384944415478da6262a03118b560d482510b462da09605db18d6cf04614262645be0c510984e8cd88080d154346ac1a80574b000100000ffff94270a2bdc4a43550000000049454e44ae426082";
        index[nextId] = bytes32(hex"1004d2d00ccf8794739c7b7cbbe6048841f4c8af046b37d59e9a801a167544e2");
        nextId++;
        b = blocks[bytes32(hex"ad07511765ae4becdc5300c486c7806cd661840b0670d0f6670e8c4014de37b0")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001b4944415478da622008b4181818421918185631900300010000ffff41aa012a18d810ed0000000049454e44ae426082";
        index[nextId] = bytes32(hex"ad07511765ae4becdc5300c486c7806cd661840b0670d0f6670e8c4014de37b0");
        nextId++;
        b = blocks[bytes32(hex"629e82a55845ea763431647fcaecfb232e275a36d8427f2568377864193801cb")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000003a4944415478da62c009ea181818fe333030fe6f6060fe7f0082273c60606780603686070c7c50cccff08141bef1030373e301745300010000ffffc5ab1058fff3c7650000000049454e44ae426082";
        index[nextId] = bytes32(hex"629e82a55845ea763431647fcaecfb232e275a36d8427f2568377864193801cb");
        nextId++;
        b = blocks[bytes32(hex"d91f640608a7c1b2b750276d97d603512a02f4b84ca13c875a585b12a24320c2")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d8660000001a4944415478da62200530fe676060f800c509446901040000ffff932103411ff574e90000000049454e44ae426082";
        index[nextId] = bytes32(hex"d91f640608a7c1b2b750276d97d603512a02f4b84ca13c875a585b12a24320c2");
        nextId++;
        b = blocks[bytes32(hex"cd3633a5e96d615b834e90e67029f7f9f507b832e1cb263a29685b8e25f678cf")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000fff68e5319653e0000000174524e530040e6d8660000002d4944415478da62c00a6a181818fe313030fe07e1060666106e696060e66860606280604646066200200000ffffdcdb0815f637cf1a0000000049454e44ae426082";
        index[nextId] = bytes32(hex"cd3633a5e96d615b834e90e67029f7f9f507b832e1cb263a29685b8e25f678cf");
        nextId++;
        b = blocks[bytes32(hex"6a400b1508bfd84ab2f4cb067d6d74dc46f74cdae7efd8b2a2d990c9f037e426")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000005c390fc775146685ecb00000000174524e530040e6d866000000204944415478da62a02e600c0d7500d1995260aa561e4c89b0526c30200000ffffd33402a4b41fa11a0000000049454e44ae426082";
        index[nextId] = bytes32(hex"6a400b1508bfd84ab2f4cb067d6d74dc46f74cdae7efd8b2a2d990c9f037e426");
        nextId++;
        b = blocks[bytes32(hex"49e0947b696384a658eeca7f5746ffbdd90a5f5526f8d15e6396056b7a0dc8af")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000d7d7d7dd6bdeda0000000174524e530040e6d866000000214944415478da62a02e600c0d7500518e01208a3531024c4104290280000000ffff18a403ab4ed4e1740000000049454e44ae426082";
        index[nextId] = bytes32(hex"49e0947b696384a658eeca7f5746ffbdd90a5f5526f8d15e6396056b7a0dc8af");
        nextId++;
        b = blocks[bytes32(hex"bfac272e71cad64427175cd77d774a7884f98c7901ebc4909ada29d464c8981e")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000028b143000000cc9ab8ec0000000174524e530040e6d866000000474944415478da94c7b10d80300c05d18b447a0ad880411821856fff55906d898e825ff8f9f8d8bcf30eadd0cc5317a0c6cb704d1348a2604134477351ef0e6ccdcf3d010000ffffff6c099ea706747f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"bfac272e71cad64427175cd77d774a7884f98c7901ebc4909ada29d464c8981e");
        nextId++;
        b = blocks[bytes32(hex"d35b2735e5fcc86991c8501996742b3b8c35772d92b69859de58ddd3559be46c")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c54450000008119b7b261dc8e83430a0000000174524e530040e6d866000000254944415478da62200a888682a9d04807060606c6d03008151a0aa51c18680e00010000fffffb9604856eb921470000000049454e44ae426082";
        index[nextId] = bytes32(hex"d35b2735e5fcc86991c8501996742b3b8c35772d92b69859de58ddd3559be46c");
        nextId++;
        b = blocks[bytes32(hex"ac5194b2986dd9939aedf83029a6e0a1d7d482eb00a5dafa05fc0aaa9b616582")];
        b.layer = Layer(9);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000c9c9c9b1b1b1dfe0055e0000000174524e530040e6d866000000274944415478da62a0256084d20e1086e814081502a65423c0546828b2206b000ea300010000ffff92de033acd8c71070000000049454e44ae426082";
        index[nextId] = bytes32(hex"ac5194b2986dd9939aedf83029a6e0a1d7d482eb00a5dafa05fc0aaa9b616582");
        nextId++;
        b = blocks[bytes32(hex"72efa89c7645580b2d0d03f51f1a2b64a425844a5cd69f1b3bb6609a4a06e47f")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000001a43c81637a4142c7c2bcdbdcc0000000174524e530040e6d866000000314944415478da622005ac5a05229942431b18181838c1145beeaa30060606c60d0c2b40d401b03a4606aa0340000000ffff03020742f02d25cf0000000049454e44ae426082";
        index[nextId] = bytes32(hex"72efa89c7645580b2d0d03f51f1a2b64a425844a5cd69f1b3bb6609a4a06e47f");
        nextId++;
        b = blocks[bytes32(hex"e81a9c78c0ec4339dc6772f1b9bbf406b53063f8408a91fe29f63ba1c2bc7b5a")];
        b.layer = Layer(8);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000cd00cb30a6a7e40000000174524e530040e6d866000000124944415478da62a01a90c12a0a080000ffff02c8001d72b777ad0000000049454e44ae426082";
        index[nextId] = bytes32(hex"e81a9c78c0ec4339dc6772f1b9bbf406b53063f8408a91fe29f63ba1c2bc7b5a");
        nextId++;
        b = blocks[bytes32(hex"4483a654781ca58fa6ba3590c74c005bce612263e17c70445d6cd167e55e900b")];
        b.layer = Layer(7);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000d600002c63f04d0000000174524e530040e6d866000000134944415478da62a008f040316e00080000ffff0360001902542c490000000049454e44ae426082";
        index[nextId] = bytes32(hex"4483a654781ca58fa6ba3590c74c005bce612263e17c70445d6cd167e55e900b");
        nextId++;
        b = blocks[bytes32(hex"b040fea53c68833d052aa3e7c8552b04390371501b9976c938d3bd8ec66e4734")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c5445000000000000ffffff1a6ed5d93a1bf30000000174524e530040e6d866000000424944415478da6220033830824846d110070606069655ab0418181844feff17015160c420808d0a61600845a14419c04c08c518c20062b242a900343b01010000ffff7f5108b501fb5fc90000000049454e44ae426082";
        index[nextId] = bytes32(hex"b040fea53c68833d052aa3e7c8552b04390371501b9976c938d3bd8ec66e4734");
        nextId++;
        b = blocks[bytes32(hex"e11278d6c191c8199a5b8bb49be7f806b837a9811195c903d844a74c4c4a704e")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000ffd926bf0c26860000000174524e530040e6d866000000404944415478da62200a888680c880d050560606c6b0d0d0a90e0caca1a1a1a1010cac81018cae010cac8e0e0c8c010cac0e0c208a11a4da81819a00100000ffff496407d2e13d1cb20000000049454e44ae426082";
        index[nextId] = bytes32(hex"e11278d6c191c8199a5b8bb49be7f806b837a9811195c903d844a74c4c4a704e");
        nextId++;
        b = blocks[bytes32(hex"411ec1566affa22bd67b13a7c49ac060c018e1c806cd314cd2186118dd55e129")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000fff68e5319653e0000000174524e530040e6d866000000304944415478da7cccb10900300c03c1372ab475d06a99cc81b8f7c3b5cfda011aaa836e50865954b082fd0f2f0000ffffd0db0b19f8088baf0000000049454e44ae426082";
        index[nextId] = bytes32(hex"411ec1566affa22bd67b13a7c49ac060c018e1c806cd314cd2186118dd55e129");
        nextId++;
        b = blocks[bytes32(hex"24dd0364c2b2d0e6540c7deb5a0acf9177d47737a2bf41ca29b553eb69558ef9")];
        b.layer = Layer(11);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c5445000000000000933709ca4e11586029880000000174524e530040e6d8660000002a4944415478da62200a888680a9fabf2092f1ff7f07060606b655ab2680a877ef2e30d01e00020000ffffcdba08c1f8ca1c3c0000000049454e44ae426082";
        index[nextId] = bytes32(hex"24dd0364c2b2d0e6540c7deb5a0acf9177d47737a2bf41ca29b553eb69558ef9");
        nextId++;
        b = blocks[bytes32(hex"2004722753f61acb2cefde9b14d2c01c6bcb589d749b4ea616b4e47d83fdb056")];
        b.layer = Layer(5);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb0000000f504c544500000028b1432c95410000002964344cdbc5fd0000000174524e530040e6d866000000234944415478da6218848091814100ce615260508273981d184cb02ba33700040000ffff7ae900dec03f69060000000049454e44ae426082";
        index[nextId] = bytes32(hex"2004722753f61acb2cefde9b14d2c01c6bcb589d749b4ea616b4e47d83fdb056");
        nextId++;
        b = blocks[bytes32(hex"1885fe71e225eade934ab7040d533bd49efc5d66e8f2d4b5aa42477ae9892ec9")];
        b.layer = Layer(9);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000004b4944415478da6262a03118b560d482510b869a0577efde6d180da2116801cd010b057affe31067c4c921c5f063c78e6108ca4c4d60905b7a0bc55c465afb806134990eb80580000000ffff78ff0b44c51816510000000049454e44ae426082";
        index[nextId] = bytes32(hex"1885fe71e225eade934ab7040d533bd49efc5d66e8f2d4b5aa42477ae9892ec9");
        nextId++;
        b = blocks[bytes32(hex"1868a04ecae06e10c5b6dcbbed4befac1ed03dda2cf86ddbd855466cc588809f")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000001c1a00534c0080dbda6080589f0000000174524e530040e6d866000000254944415478da62200364463930303030eecb6f40a232a5c0820c0c0e0cb40080000000ffff32d20565dbf243f00000000049454e44ae426082";
        index[nextId] = bytes32(hex"1868a04ecae06e10c5b6dcbbed4befac1ed03dda2cf86ddbd855466cc588809f");
        nextId++;
        b = blocks[bytes32(hex"971f7c3d5d14436a3b5ef2d658445ea527464a6409bd5f9a44f3d72e30d1eba8")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c544500000000000055555535d909f10000000174524e530040e6d8660000001b4944415478da62c0051cc024e3042c1443030a8f2e00100000ffff765a0305a5b614880000000049454e44ae426082";
        index[nextId] = bytes32(hex"971f7c3d5d14436a3b5ef2d658445ea527464a6409bd5f9a44f3d72e30d1eba8");
        nextId++;
        b = blocks[bytes32(hex"6a36bcf4268827203e8a3f374b49c1ff69b62623e234e96858ff0f2d32fbf268")];
        b.layer = Layer(12);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000ffc926d3ca64d80000000174524e530040e6d866000000124944415478da62a01928009380000000ffff0300007135fa2b640000000049454e44ae426082";
        index[nextId] = bytes32(hex"6a36bcf4268827203e8a3f374b49c1ff69b62623e234e96858ff0f2d32fbf268");
        nextId++;
        b = blocks[bytes32(hex"15854f7a2b735373aa76722c01e2f289d8b18cb1a70575796be435e4ce55e57a")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000008d8d8db4b4b44f7060b00000000174524e530040e6d866000000284944415478da62a032080d7560606060dcff7f02030303dbd5d00b080a2a0855422200040000ffffd7670a737ec363890000000049454e44ae426082";
        index[nextId] = bytes32(hex"15854f7a2b735373aa76722c01e2f289d8b18cb1a70575796be435e4ce55e57a");
        nextId++;
        b = blocks[bytes32(hex"3e6bc8fc06a569840c9490f8122e6b7f08a7598486649b64477b548602362516")];
        b.layer = Layer(9);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c54450000000000005959590040ff401523b30000000174524e530040e6d8660000001b4944415478da621838c01aea00a2a4563b20f1700140000000ffff5249023a69668c5f0000000049454e44ae426082";
        index[nextId] = bytes32(hex"3e6bc8fc06a569840c9490f8122e6b7f08a7598486649b64477b548602362516");
        nextId++;
        b = blocks[bytes32(hex"3511b04ac6a3d46305172269904dc469a40f380a4e7afa8742ce6e6a44825c4a")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c5445000000ff8ebe000000ffffff4ae3beda0000000174524e530040e6d866000000484944415478da62200568ad0053ab578148a655af1ac0d42a10c5181aeac0c0c0c0ea181000a2181c409408034308030383281e8a958101acc1811144313a303a60b71a100000ffff0f6e0bf3e2fa2eec0000000049454e44ae426082";
        index[nextId] = bytes32(hex"3511b04ac6a3d46305172269904dc469a40f380a4e7afa8742ce6e6a44825c4a");
        nextId++;
        b = blocks[bytes32(hex"2857e47dcac3b744dd7d41617ce362f1dd3ae8eb836685cc18338714205b036c")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000fff68e5319653e0000000174524e530040e6d866000000394944415478da62c00aea181818ff83700303f3df030ccc15071898050e30b0331c6060836276307e00c6fc0d1f18980f36603309100000ffffaa950e78c9a6ec2c0000000049454e44ae426082";
        index[nextId] = bytes32(hex"2857e47dcac3b744dd7d41617ce362f1dd3ae8eb836685cc18338714205b036c");
        nextId++;
        b = blocks[bytes32(hex"eb92e34266f6fa01c275db8379f6a521f15ab6f96297fe3266df2fe6b0e1422e")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b0000000c504c544500000000000085561ea66e2c6852a3220000000174524e530040e6d866000000244944415478da62c005442054099864fc02a6d82014f707881c943260a00300040000ffff252e04932174d5ed0000000049454e44ae426082";
        index[nextId] = bytes32(hex"eb92e34266f6fa01c275db8379f6a521f15ab6f96297fe3266df2fe6b0e1422e");
        nextId++;
        b = blocks[bytes32(hex"c3075202748482832362d1b854d8274a38bf56c5ad38d418e590f46113ff10b1")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180403000000125920cb0000000f504c5445000000000000690c458c0d5bad21606331bdda0000000174524e530040e6d866000000324944415478da62187c80515090515010c651521454528472048d0d198d0d61322e8e8c2e8e304d820220443f00080000ffff973e030740dbe40c0000000049454e44ae426082";
        index[nextId] = bytes32(hex"c3075202748482832362d1b854d8274a38bf56c5ad38d418e590f46113ff10b1");
        nextId++;
        b = blocks[bytes32(hex"bb1f372f67259011c2e9e7346c8a03a11f260853a1fe248ddd29540219788747")];
        b.layer = Layer(10);
        b.dataFemale = hex"89504e470d0a1a0a0000000d49484452000000180000001802030000009d19d56b00000009504c5445000000000000ffd926bf0c26860000000174524e530040e6d866000000154944415478da62a0039080502c949801080000ffff07fc001da05932af0000000049454e44ae426082";
        index[nextId] = bytes32(hex"bb1f372f67259011c2e9e7346c8a03a11f260853a1fe248ddd29540219788747");
        nextId++;
        b = blocks[bytes32(hex"2e9a5434da70e5ea2ed439b3a33aac60bd252c92698c1ba37e9ed77f975c6cab")];
        b.layer = Layer(5);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000384944415478da6262a03118b560d482510b462da09605da531c6782302131b22db89ab33f9d18b10101a3a968d482510be86001200000ffffd02f0b616aa9c37e0000000049454e44ae426082";
        index[nextId] = bytes32(hex"2e9a5434da70e5ea2ed439b3a33aac60bd252c92698c1ba37e9ed77f975c6cab");
        nextId++;
        b = blocks[bytes32(hex"8c0e60b85ff0f8be1a87b28ae066a63dcc3c02589a213b0856321a73882515f9")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c544500000051360c48b320160000000174524e530040e6d8660000002f4944415478da62c00bea181818fe333030fe6f60603ed8c0c0dc00c1ec0c58302312666e606067079b00080000ffffd1030b1b1e3ca1240000000049454e44ae426082";
        index[nextId] = bytes32(hex"8c0e60b85ff0f8be1a87b28ae066a63dcc3c02589a213b0856321a73882515f9");
        nextId++;
        b = blocks[bytes32(hex"047228ad95cec16eb926f7cd21ac9cc9a3288d911a6c2917a24555eac7a2c0e2")];
        b.layer = Layer(1);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df80000002f4944415478da6262a03118b560d482510b462d18b5806e164c916250036142620302462379d482216001200000ffff8e55037f0295ca130000000049454e44ae426082";
        index[nextId] = bytes32(hex"047228ad95cec16eb926f7cd21ac9cc9a3288d911a6c2917a24555eac7a2c0e2");
        nextId++;
        b = blocks[bytes32(hex"e651be5dd43261e6e9c1098ec114ab5c44e7cb07377dc674336f1b3d34428fe4")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000364944415478da62c00a0a1818187f303030bf6060607fc0c0c07e808181bd8181811f861920980f19373030c83320301400020000ffff746d06dbf514328c0000000049454e44ae426082";
        index[nextId] = bytes32(hex"e651be5dd43261e6e9c1098ec114ab5c44e7cb07377dc674336f1b3d34428fe4");
        nextId++;
        b = blocks[bytes32(hex"a71068a671b554f75b7cc31ce4f8d63c377f276333d11989e77bc4a9205b5e42")];
        b.layer = Layer(3);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000294944415478da9cc0310d00300800b01ecbae65125042f02f8b9b971a2e3e0285c4c3b1d5010000ffff337800bd4717cafb0000000049454e44ae426082";
        index[nextId] = bytes32(hex"a71068a671b554f75b7cc31ce4f8d63c377f276333d11989e77bc4a9205b5e42");
        nextId++;
        b = blocks[bytes32(hex"1cd064e6db4e7c5180ccf5f2afe1370c6539b525fe3bea9c358f24a7cbdb50ad")];
        b.layer = Layer(8);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000000000a567b9cf0000000174524e530040e6d866000000124944415478da62a01a90c12a0a080000ffff02c8001d72b777ad0000000049454e44ae426082";
        index[nextId] = bytes32(hex"1cd064e6db4e7c5180ccf5f2afe1370c6539b525fe3bea9c358f24a7cbdb50ad");
        nextId++;
        b = blocks[bytes32(hex"d5de5c20969a9e22f93842ca4d65bac0c0387225cee45a944a14f03f9221fd4a")];
        b.layer = Layer(6);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180806000000e0773df8000000484944415478da6262a03118b560d482510b8683052c04e4ff13690e23b916309c7ef6b710c6369562eec725466e103162e13312eb7abac401c368321db560d402da5b00080000ffffbe8c09370dfcbb5e0000000049454e44ae426082";
        index[nextId] = bytes32(hex"d5de5c20969a9e22f93842ca4d65bac0c0387225cee45a944a14f03f9221fd4a");
        nextId++;
        b = blocks[bytes32(hex"2c382a7f1f32a6a2d0e9b0d378cb95e3dad70fe6909ff13888fe2a250bd10bb0")];
        b.layer = Layer(12);
        b.dataFemale = hex"89504e470d0a1a0a0000000d4948445200000018000000180103000000dab9afbb00000006504c5445000000dfdfdf337edd570000000174524e530040e6d866000000124944415478da62a01928009380000000ffff0300007135fa2b640000000049454e44ae426082";
        index[nextId] = bytes32(hex"2c382a7f1f32a6a2d0e9b0d378cb95e3dad70fe6909ff13888fe2a250bd10bb0");
        nextId++;
    }

    /**
    * @dev registerBlock allows anybody to add a new block to the contract.
    *   Either _dataMale or _dataFemale, or both, must contain a byte stream of a png file.
    *   It's best if the png is using an 'index palette' and the lowest bit depth possible,
    *   while keeping the highest compression setting.
    * @param _dataMale png data for the male version, 24x24
    * @param _dataFemale png data for the female version, 24x24
    * @param _layer 0 to 12, corresponding to the Layer enum type.
    * @param _name the name of the trait, Camel Case. e.g. "Luxurious Beard"
    */
    function registerBlock(
        bytes calldata _dataMale,
        bytes calldata _dataFemale,
        uint8 _layer,
        string memory _name) external
    {
        bytes32 key = keccak256(abi.encodePacked(_name));
        Block storage b = blocks[key];
        require (_layer < 13, "invalid _layer");
        unchecked{
            require (_dataMale.length + _dataFemale.length > 0, "no data");
            require (b.dataMale.length + b.dataFemale.length == 0, "slot taken");
        }
        if (_layer==0 && _dataMale.length > 0 && _dataFemale.length > 0) {
            revert("layer0 cannot have both versions");
        }
        if (_dataMale.length > 0) {
            require (_validatePng(_dataMale), "invalid m png");
            b.dataMale = _dataMale;
        }
        if (_dataFemale.length > 0) {
            require (_validatePng(_dataFemale), "invalid f png");
            b.dataFemale = _dataFemale;
        }
        b.layer = Layer(_layer);
        index[nextId] = key;
        emit NewBlock(msg.sender, nextId, _name);
        unchecked{nextId++;}
    }

    /**
    * @dev Just a limited png validation. Only verifies that the png is 24x24 and has a png structure,
    *   but doesn't validate any checksums or any other validation
    */
    function _validatePng(bytes calldata _data) pure internal returns (bool) {
        unchecked {
            if (_data.length < 8) {
                return false;
            }
            bytes memory pngHeader = bytes("\x89PNG\r\n\x1a\n"); // first 8 bytes
            uint pos;
            while (pos < 8) {
                if (_data[pos] != pngHeader[pos]) {
                    return false;
                }
                pos++;
            }
            int32 chunkLen;
            while (true) {
                 // next 4 bytes represent a big-endian int32, the chunk length
                chunkLen = int32(uint32(uint8(_data[pos+3]))
                | uint32(uint8(_data[pos+2]))<<8
                | uint32(uint8(_data[pos+1]))<<16
                    | uint32(uint8(_data[pos]))<<24);
                pos += 4;
                if (
                    _data[pos] == bytes1("I") &&
                    _data[pos+1] == bytes1("H") &&
                    _data[pos+2] == bytes1("D") &&
                    _data[pos+3] == bytes1("R")) { // IHDR
                    if (24 != int32(uint32(uint8(_data[pos+7]))
                        | uint32(uint8(_data[pos+6]))<<8
                        | uint32(uint8(_data[pos+5]))<<16
                        | uint32(uint8(_data[pos+4]))<<24)) { // width needs to be 24
                        return false;
                    }
                    if (24 != int32(uint32(uint8(_data[pos+11]))
                    | uint32(uint8(_data[pos+10]))<<8
                    | uint32(uint8(_data[pos+9]))<<16
                        | uint32(uint8(_data[pos+8]))<<24)) { // height needs to be 24
                        return false;
                    }
                } else if (
                    _data[pos] == bytes1("P") &&
                    _data[pos+1] == bytes1("L") &&
                    _data[pos+2] == bytes1("T") &&
                    _data[pos+3] == bytes1("E")) {  // PLTE
                } else if (
                    _data[pos] == bytes1("t") &&
                    _data[pos+1] == bytes1("R") &&
                    _data[pos+2] == bytes1("N") &&
                    _data[pos+3] == bytes1("S")) {  // tRNS
                } else if (
                    _data[pos] == bytes1("I") &&
                    _data[pos+1] == bytes1("D") &&
                    _data[pos+2] == bytes1("A") &&
                    _data[pos+3] == bytes1("T")) {  // IDAT
                } else if (
                    _data[pos] == bytes1("I") &&
                    _data[pos+1] == bytes1("E") &&
                    _data[pos+2] == bytes1("N") &&
                    _data[pos+3] == bytes1("D")) {  // IEND
                    return true;                    // png is valid (without checking the CRC)
                } else {
                    return false;
                }
                pos += 4 + uint(int(chunkLen)) + 4; // skip the payload, ignore CRC
            }
        } //unchecked
        return true;
    }

    /**
    * @dev svgFromNames returns the svg data as a string
    * @param _attributeNames a list of attribute names, eg "Male 1", "Goat"
    *   must have at least 1 layer 0 attribute (eg. Male, Female, Alien, Ape, Zombie)
    *   e.g. ["Male 1","Goat"]
    *   Where "Male 1" is a layer 0 attribute, that decides what version of
    *   image to use for the higher
    *   layers (dataMale or dataFemale)
    */
    function svgFromNames(string[] calldata _attributeNames) external view returns (string memory){
        bytes32[] memory attributeKeys = new bytes32[](_attributeNames.length);
        for (uint i = 0; i < _attributeNames.length; i++) {
            attributeKeys[i] = keccak256(
                abi.encodePacked(_attributeNames[i])
            );
        }
        return _svg(attributeKeys);
    }

    /**
    * @dev svgFromKeys returns the svg data as a string
    * @param _attributeKeys a list of attribute names that have been hashed,
    *    eg keccak256("Male 1"), keccak256("Goat")
    *    must have at least 1 layer 0 attribute (eg. keccak256("Male 1")) which
    *    decides what version of image to use for the higher layers
    *    (dataMale or dataFemale)
    *    e.g. ["0x9039da071f773e85254cbd0f99efa70230c4c11d63fce84323db9eca8e8ef283",
    *    "0xd5de5c20969a9e22f93842ca4d65bac0c0387225cee45a944a14f03f9221fd4a"]
    */
    function svgFromKeys(bytes32[] calldata _attributeKeys) external view returns (string memory) {
        return _svg(_attributeKeys);
    }

    /**
    * @dev svgFromIDs returns the svg data as a string
    *   e.g. [9,55,99]
    *   One of the elements must be must be a layer 0 block.
    *   This element decides what version of image to use for the higher layers
    *   (dataMale or dataFemale)
    * @param _ids uint256 ids of an attribute, by it's index of creation
    */
    function svgFromIDs(uint256[] calldata _ids) external view returns (string memory) {
        bytes32[] memory attributeKeys = new bytes32[](_ids.length);
        for (uint i = 0; i < _ids.length; i++) {
            attributeKeys[i] = index[_ids[i]];
        }
        return _svg(attributeKeys);
    }

    /**
    * @dev svgFromPunkID returns the svg data as a string given a punk id
    * @param _tokenID uint256 IDs a punk id, 0-9999
    */
    function svgFromPunkID(uint256 _tokenID) external view returns (string memory) {
        // Get the attributes first, using https://github.com/0xTycoon/punks-token-uri
        IAttrParser p = IAttrParser(0xD8E916C3016bE144eb2907778cf972C4b01645fC);
        string[8] memory _attributeNames = p.parseAttributes(_tokenID);
        uint count;
        for (uint i = 0; i < 8; i++) {
            if (bytes(_attributeNames[i]).length == 0) {
                break;
            }
            count++;
        }
        bytes32[] memory attributeKeys = new bytes32[](count);
        for (uint i = 0; i < count; i++) {
            attributeKeys[i] = keccak256(
                abi.encodePacked(_attributeNames[i])
            );
        }
        return _svg(attributeKeys);
    }

    /**
    * @dev _svg build the svg, layer by layer. The first layer determines if dataFemale or dataMale is used for
    *   the afterward layers. Empty layers will be ignored.
    * @return string of the svg image
    */
    function _svg(bytes32[] memory _keys) internal view returns (string memory) {
        string memory start = '<svg class="punkblock" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">';
        string memory end = '</svg>';
        string memory imgStart = '<image x="0" y="0" width="24" height="24" style="image-rendering:crisp-edges;image-rendering:pixelated" xlink:href="data:image/png;base64,';
        string memory imgEnd = '"/>';
        string memory images;
        Block[] memory layers = new Block[](13);
        // load the block layers in
        for (uint i = 0; i < _keys.length; i++) {
            Block memory b = blocks[_keys[i]];
            require (b.dataFemale.length + b.dataMale.length > 0, "invalid attribute");
            layers[uint256(b.layer)] = b;
        }
        bool isFemale;
        if (layers[0].dataFemale.length > 0) {
            isFemale = true;
        } else {
            require (layers[0].dataMale.length > 0, "base layer attribute unspecified");
        }
        for (uint i = 0; i < 13; i++) {
            if (isFemale && layers[i].dataFemale.length > 0) {
                images = string(abi.encodePacked(
                    images,
                    imgStart,
                    Base64.encode(layers[i].dataFemale),
                    imgEnd
                ));
            } else if (!isFemale && layers[i].dataMale.length > 0)  {
                images = string(abi.encodePacked(
                    images,
                    imgStart,
                    Base64.encode(layers[i].dataMale),
                    imgEnd
                ));
            }
        }
        return string(abi.encodePacked(
            start,
            images,
            end
        ));
    }

    /**
    * @dev getBlocks returns a sequential list of blocks in a single call
    * @param _fromID is which id to begin from
    * @param _count how many items to retrieve.
    * @return Block[] list of blocks, uint256 next id
    */
    function getBlocks(uint _fromID, uint _count) external view returns(Block[] memory, uint256) {
        Block[] memory ret = new Block[](_count);
        while (_count != 0) {
            ret[_count-1] = blocks[index[_fromID + _count -1]];
            _count--;
        }
        return (ret, nextId);
    }
}
// IAttrParser implemented by 0x4e776fCbb241a0e0Ea2904d642baa4c7E171a1E9
interface IAttrParser {
    function parseAttributes(uint256 _tokenId) external view returns (string[8] memory);
}

library Base64 {
    /**
     * @dev Base64 Encoding/Decoding Table
     */
    string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /**
     * @dev Converts a `bytes` to its Bytes64 `string` representation.
     */
    function encode(bytes memory data) internal pure returns (string memory) {
        /**
         * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
         * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
         */
        if (data.length == 0) return "";

        // Loads the table into memory
        string memory table = _TABLE;

        // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
        // and split into 4 numbers of 6 bits.
        // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
        // - `data.length + 2`  -> Round up
        // - `/ 3`              -> Number of 3-bytes chunks
        // - `4 *`              -> 4 characters for each chunk
        string memory result = new string(4 * ((data.length + 2) / 3));

        /// @solidity memory-safe-assembly
        assembly {
        // Prepare the lookup table (skip the first "length" byte)
            let tablePtr := add(table, 1)

        // Prepare result pointer, jump over length
            let resultPtr := add(result, 32)

        // Run over the input, 3 bytes at a time
            for {
                let dataPtr := data
                let endPtr := add(data, mload(data))
            } lt(dataPtr, endPtr) {

            } {
            // Advance 3 bytes
                dataPtr := add(dataPtr, 3)
                let input := mload(dataPtr)

            // To write each character, shift the 3 bytes (18 bits) chunk
            // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
            // and apply logical AND with 0x3F which is the number of
            // the previous character in the ASCII table prior to the Base64 Table
            // The result is then added to the table to get the character to write,
            // and finally write it in the result pointer but with a left shift
            // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits

                mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance
            }

        // When data `bytes` is not exactly 3 bytes long
        // it is padded with `=` characters at the end
            switch mod(mload(data), 3)
            case 1 {
                mstore8(sub(resultPtr, 1), 0x3d)
                mstore8(sub(resultPtr, 2), 0x3d)
            }
            case 2 {
                mstore8(sub(resultPtr, 1), 0x3d)
            }
        }
        return result;
    }
}