Hacky Easter 2017 Teaser , Riddle 14 Solution

RIDDLE 14

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

this seems to be binary data, looking about the start and end, it seems it is a PNG picture

i wrote the below php script that take the data and save it as PNG file, open the file i found the code

$hexpic="89504E470D0A1A0A0000000D494844520000001D0000000708020000007BBCD1A500000017352474200AECE1CE90"
."000000467414D410000B18F0BFC6105000000097048597300000EC300000EC301C76FA8640000001874455874536F"
."667477617265007061696E742E6E657420342E302E36FC8C63DF000001AA4944415428534D513DC8416118BD7E4A1"
."9180C0665A0582C8C7E22DF20C5480A130629060CF29792C16CB06293C82283C2F0C562540693C94F297F2983FB9D"
."1A8D4676BB1D9F7ABD9EDFEF877FBFDFE3F1782E97BB5EAFF0B1473A9D063F1C0E1A8D86CB1D8FC7D8CBE3F1341A0"
."EBF9BEDB77A673CE7DEE799FF3BE0CFB81C160904824C4098542C1E17098CDE672B90C399D4E9D4EA740208846A39"
."BCD2693C9300CF3F5079A29168B56ABD5E572B5DBEDDF5C954A85B9D3E944D2EBF5D66AB5DBEDF67EBF5BADD6EBF5"
."DC8C964A2502840FE83CF050987C3642693C96AB54A1C558810B8DC4824321C0E178B85CD66836C369BD80244A7D3"
."A194DBED7E3C1E8893CBE5E804743A1DEE57964DA552F57A1D64B7DB994C2632095CAE4C260B8542C160502A95AED"
."954AD84EA9542E974B9A108BC5FF7301AD564B2F91CFE729174033BC1BF17EBFCFF87CBEF97C4E7ABBDDEAF57A90D"
."7EBC160100804E05F2E97E3F1882054E6F7DDEFF770CEE73378369BA5DCE7F3899B04E1C174BBDD582CF6FD01162F"
."96C66341A3FA519FE5AD56A35A44824C2D99F71B652A9F0B9ABD5CA62B1604028142612891FA2F7838B729D41E800"
."00000049454E44AE426082";

$data = pack("H" . strlen($hexpic), $hexpic);

file_put_contents("sample.png", $data);

the code is "AGBTC"