Contract Address 0x73c084388F5423c991030C3FA22249D3e02b1960

 

Overview

Total Supply:
1,000,000,000 MDR

Circulating Supply:
300,000,000 MDR

Holders:
Addresses

Price:
$0.07

Market Cap/Fully MC:
$400,000,000 (@ $0.07)

Token:
My Name Tag:
Not Available, login to update

Contract:
0x73c084388F5423c991030C3FA22249D3e02b1960

Creator:
0x7d528109c7Db392E92740C982A4e36f37c4ca684

Decimal:
8

Issuing Time :
2023-05-04 11:23

Official Website:
#

Social Profiles:
Balance
0 MDR

Value
$0.00

Txn Hash
Method
Age
From
To
Quantity
0xd048c6388d39e55886ce60dbdc64d9ae0d05b279cacb1d9e58c8d72f9f3887bf Transfer 2024-02-28 11:31:36 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 27.5500 MDR
0xa99a8a74011d04bbe17cf83fb0fbe8632edad7ae00733b557c3af16f51cab5b5 Transfer 2024-02-27 18:25:46 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 27.5500 MDR
0x082f353ad7af40e52269b6c6b148dc836edf87f46ad76780d7543b68d276989e Transfer 2024-02-10 13:21:13 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 17.1000 MDR
0xb53003c0bad7905090b3dee0958ce4863ee57700b8a072f972681d8f188339dd Transfer 2024-02-09 12:52:38 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 17.1000 MDR
0xd5054cb8897674c39862f80fbd5336e7da4fff4904110bfb8fd5112d9e6482e0 Transfer 2024-01-12 15:15:44 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 24.7000 MDR
0x141bff7ed6e57069608f75dc9ff9fb54d55410fbf3afc7f18d09b6c38aa63ddc Transfer 2024-01-12 14:56:53 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 24.7000 MDR
0x0a6f44324df00bba73b2ed0860fc76489f90298ce010add669103b9d64ee90b6 Transfer 2024-01-04 11:13:12 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 833.1500 MDR
0x3f6729cd73862d7e3c96151e881f710c2820576d2c56fac91a58f548992ddce8 Transfer 2024-01-01 13:58:48 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 833.1500 MDR
0x300989716714eba472750c8c88db564e1a9b4bd9345014f3811f29f890aaee44 Transfer 2023-12-27 17:03:00 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 284.0500 MDR
0x25fb6e6f48c18b24942cc46e7194e15537a9101f307b2b9e90b5209115f80a9d Transfer 2023-12-27 16:37:21 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 244.1500 MDR
0xad3474f05da1bcd2e58ce6d45f17b532090b87ed61dbf8ee655fa40fe2d55aa7 Transfer 2023-12-25 12:51:52 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 39.9000 MDR
0xd5b94b23cc28c2f0075a08f81fa88128a809a06ceb404b66c6c556f415e66b24 Transfer 2023-12-21 20:00:46 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 162.4500 MDR
0x4b3c6ee3985145c22732c0466ffc353f0de11609a50b636169d8baf2c205b5e0 Transfer 2023-12-21 11:16:52 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 162.4500 MDR
0xbe36e38ed84068a30e731a38f42d6254f14637d2e91cdf6be5bc4ccd7ba1876d Transfer 2023-12-16 16:50:16 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 121.6000 MDR
0x580172320bb2e6a361ee94007970e35635d36d07271d0581fd2030edb211f39a Transfer 2023-12-16 11:02:28 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 121.6000 MDR
0x6c2a2233fc1e2dc47f90fe53e7ec8e10c218121ef0124f9a498545680ae70861 Transfer 2023-12-13 15:54:24 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 203.3000 MDR
0x01eb4f528bd7d0b703b172f05bdf3afde041499d3688d0b2d0f65e9edc23a828 Transfer 2023-12-13 12:14:12 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 203.3000 MDR
0x83297a4a17f0fd5f008cff80496c1e2813278fba81689a2684448ed441e0b0c8 Transfer 2023-12-08 15:05:15 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 162.4500 MDR
0x518ce7300d7d32161f42f4864a9b174b60e34025a30d872ebc0c4c906f1121a7 Transfer 2023-12-08 14:39:33 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 162.4500 MDR
0xb2122fa91127d14126444d91c89072c86c759ecce91f3b890ecbea3a11767ce1 Transfer 2023-12-04 18:17:57 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 161.5000 MDR
0x66b31e77a8fae7eaa2dc095b397578a0d21fed6b164f66a9b79c73297ba4ca75 Transfer 2023-12-04 18:11:18 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 161.5000 MDR
0x70668afb4536f6b827953dce529c3421ad4ee2d77cb48d6ea8f1abdd10ca57ca Transfer 2023-12-01 11:49:12 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 122.5500 MDR
0x3dd4f891da56da913a07748ae340cb114f59697342fc9f1841940f9ebd213b2b Transfer 2023-12-01 11:41:03 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 122.5500 MDR
0xcd1b27089dd58e0b0236e4b2b7d8283f9e56053ab522f2d6e0a3f1405cc84ae0 Transfer 2023-11-27 15:51:48 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 162.4500 MDR
0x2dc1d890bc18622967adba5a76ab51918c00c09ff455dd6fd7632870807a5350 Transfer 2023-11-27 13:15:09 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 162.4500 MDR
0x5d4227a54735a30a30794c6129371a71c3b616664a98b1c9fbea3c88faf56d47 Transfer 2023-11-23 11:56:39 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 121.6000 MDR
0x78f5aa77c980321c23a7f2f68fc39c68177efe5ecc96e7ad7bc810ef0c492b3e Transfer 2023-11-23 11:23:54 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 121.6000 MDR
0x06cbe26d91d1d786298de23aa24e23240fe71f4975eaa27b1c5af667aa39d95e Transfer 2023-11-20 10:52:36 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 121.6000 MDR
0xaa1a3270fd6dfe37f0696efea158852539723e82e3dae4ea197726ff611fdad1 Transfer 2023-11-20 10:41:48 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 121.6000 MDR
0x2c703d5928a619196397b7d54cd4ea2a98d8e7574da0598295c2529e392a93fe Transfer 2023-11-18 11:07:39 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 323.9500 MDR
0x0a1d21c9a0a3ec6e39dd383e9666b5318691b165f3f1314c39663ff73b79fa23 Transfer 2023-11-17 12:25:24 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 323.9500 MDR
0x0f2b98d6eda16e3e38144ee36b32c7cab85da925037c2a1f6f931713523af43e Transfer 2023-11-09 17:12:02 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 406.6000 MDR
0xeb3da516be813fe98dddacee3a3ca4c7c27f09f17c0670f70f9b5e35e9826795 Transfer 2023-11-09 16:25:14 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 203.3000 MDR
0xe4910e59ed33a3bbe2f994cd3cc872909c64458dc1447c91a6d2bb34a78b90b7 Transfer 2023-11-04 10:54:52 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 203.3000 MDR
0x3fb17f18e09c85034c28da526706efadd3ef400ce03fd3e5cbeb6d5ffd70f3b8 Transfer 2023-10-30 20:34:42 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 161.5000 MDR
0x97466aebc89130f06543e14f838da5960ab90004cff36bb043d87698b9cc681d Transfer 2023-10-30 11:20:24 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 161.5000 MDR
0x39ff3a76582b349d145d0d4f41d6fc1fe08123c143d5d0023c4910e05784671e Transfer 2023-10-28 16:06:58 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 324.9000 MDR
0x7de5a7aac625d1a075c8ff076b06e70a43e8a966b9bb333565b99eba07ef4fef Transfer 2023-10-27 12:35:10 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 324.9000 MDR
0x1722dc944398ee0db8ab5328709d2188efe4c07dc633b452a110ec4c587fa492 Transfer 2023-10-20 16:21:10 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 364.8000 MDR
0x04e81425d5ed62958940aefb635435843b8b91034cbdad6a46fd8c940f20186b Transfer 2023-10-20 07:05:46 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 364.8000 MDR
0xd301b4b8b9aff9a5ee31bc043f2210fe3437b5b27fe688ec942fd01a8ef2d6bf Transfer 2023-10-09 18:20:16 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 244.1500 MDR
0x1c79d34aec6e2a586e1dde8c5f1f6c652d4cf5e19712ec06f01824412fe148cb Transfer 2023-10-09 10:42:25 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 244.1500 MDR
0xbef1082019cddbbfe67d83ce58fed4f64a204d0a74fdce7d60780c0db55191a5 Transfer 2023-10-03 21:23:25 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 405.6500 MDR
0x5bd8ab470d4242edf5e21985997975ca911b196375477b31323c1fa01ccf8bc6 Transfer 2023-10-03 16:21:52 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 405.6500 MDR
0xb668e4051ee823fff98491ac5c4c9031a6a91417b57f808e370ed98eebacc4e2 Transfer 2023-10-02 19:13:19 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 202.3500 MDR
0x4f55a8239bc842728cf711e9f9cc17446cc87c92a25c5df32239fbe608afbc46 Transfer 2023-09-23 12:22:34 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 202.3500 MDR
0xf315eb40104c951d18a4206258eede36ea0840f3b861f46f67a218d9f792f5f6 Transfer 2023-09-18 15:40:19 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 446.5000 MDR
0x3ad681e10db5545405225ad97a83ee7536cab5d3d4f29ec083ab784d2c0070b6 Transfer 2023-09-18 13:22:31 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 446.5000 MDR
0x8f204269f90eefd910ddafc9a2232e8679de810d9820766d25a13108be11f51f Transfer 2023-09-07 12:03:29 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 1,685.3000 MDR
0x6771470e42790921036075a2d104f098cc6dcb90b06ecfaf4a328013d7e1d236 Transfer 2023-09-07 11:39:23 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 202.3500 MDR
0x9f54313a7e571231e037f41dcea8985ded8c8ce6d6614a92bf38fefbfe4f32bd Transfer 2023-09-02 12:16:14 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 244.1500 MDR
0x59da2c8ee2cd34ca8d81ffee82b24d7144548bb17f47fc00e709f4842b248575 Transfer 2023-08-27 15:17:35 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 1,238.8000 MDR
0x35991324f234b4a98eb70fc75cf663dddfda1b6a5c56bbd73a3f4ee2e3cd4d33 Transfer 2023-07-28 12:10:58 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 96.9000 MDR
0x85f9b8ec509430e246166b9200581d89b10fc410486233e58acdaea61683da21 Transfer 2023-07-25 12:03:14 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 96.9000 MDR
0xfc888eca75a46ec97217f393a5795e6a21ad2979b199f1e7b5ff7ba06a166ebd Transfer 2023-07-22 11:52:25 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x70ce64bfd63e507ccff7c04035e0b4fb7b6e0a4e 780.7500 MDR
0x0d1eb25b468e4612986a908253bc57bddd8f4df811dd33cec2000e8a311e5d01 Transfer 2023-07-22 11:40:31 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 65.5500 MDR
0x3861df92a14654d350a49a03d3fc6091f3991f77ed6917185e4e0a8f58a54650 Transfer 2023-07-20 20:47:47 0xd0de0c63f3da08cd396593da761f56a4d6fa59c8 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 194.7500 MDR
0x7133dca1df9958709653c6ba383304cba29105b10a76023836e3eb9236c46042 Transfer 2023-07-14 11:57:44 0x83825024f33bdaa0a2882dfd837901ad98033923 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 198.5500 MDR
0x7fc4dadb06331ea4dc4cdb5937f6b74f7e533ec85c1dd9015147f850a667cfb0 Transfer 2023-07-08 17:06:17 0x83825024f33bdaa0a2882dfd837901ad98033923 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 133.0000 MDR
0x7a16ff982fb87440baca597c08613bd54ef87c50246edd4567d9fbc8f4721af8 Transfer 2023-07-04 12:59:26 0x83825024f33bdaa0a2882dfd837901ad98033923 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 55.1000 MDR
0xfdc2dc2cac32e1884627944224ae29ba5fc79c5e1a5303fbc97b6eaf37c626c7 Transfer 2023-07-02 16:27:14 0x83825024f33bdaa0a2882dfd837901ad98033923 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 133.0000 MDR
0x205709c8443f57f7d953057ca1ebe6a3c23a99d7575633629e7c7f517bb28dc0 Transfer 2023-06-26 22:48:41 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x6f0bc380bad54b6eb94cd40f82e530a9823ae1bd 33.0000 MDR
0xe822e8692e693f6095cf5e0b69241ebed68ccfca6611ae8e21de0d2bd9d0fff5 Transfer 2023-06-26 16:31:23 0x83825024f33bdaa0a2882dfd837901ad98033923 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 33.2500 MDR
0x314dd6171d3639dbc9ebd7dd9b6fdbdb670ed7cfde7998b4895caa7067f92382 Transfer 2023-06-24 20:47:32 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x6f0bc380bad54b6eb94cd40f82e530a9823ae1bd 116.0000 MDR
0x44040282e9acdaeb06846f8d1f8ba6bb52ca76865a936857c912add7c9643ae5 Transfer 2023-06-24 11:32:08 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 115.9000 MDR
0x9f9a99ec14f4eb9b8c064a47710d53288ef1d3560e5b03bdb0d07634c6b17ce4 Transfer 2023-06-19 08:12:53 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x6f0bc380bad54b6eb94cd40f82e530a9823ae1bd 220.0000 MDR
0x4587143f62b27d7382523a1ee7755d4cdf1ab5fa5101978505653559ae124b7d Transfer 2023-06-17 12:54:20 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 99.7500 MDR
0xb433b033b7c43cf7d22463685e9bc82002b43870bd725e0f56b2efbe3695acbc Transfer 2023-06-12 12:01:13 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 116.8500 MDR
0x8f85e538ab717c115c445e2bb37ba314bf02a7ff5c9811a6ed99a9b581ea74a7 Transfer 2023-06-05 23:20:54 0x3699c22336b832c97473ea2eb30f12400cafae3d OUT 0x6f0bc380bad54b6eb94cd40f82e530a9823ae1bd 660.0000 MDR
0xc6fb6a391e172ef454e854781e977d91f7a7c015bdcc2137116754abe1f1339f Transfer 2023-06-05 12:32:54 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 464.5500 MDR
0x3a34dc34c4834af77a6cd12bf896f9c6a17b34657be231eb3ea45e4f18d68105 Transfer 2023-06-03 18:28:31 0x20133264da3139b659df04cbf889b98864c7cb66 IN 0x3699c22336b832c97473ea2eb30f12400cafae3d 199.5000 MDR

 Latest 9 ERC-20 Token Transfer Events

Txn Hash
Block
From
To
Value [Txn Fee]
0x4c8599fa5db502d29d78ad3c85e39ff7160c4775e4e645cd344af13d662eded3 16807914 2 hrs 6 mins ago 0x931cdb4f83672a7803a552414c026b7914bb72ae OUT 0x1fd1259fa8cdc60c6e8c86cfa592ca1b8403dfad 0 BLN 0.000143891192

 Latest 25 blocks (From a total of 353,417 blocks with 47,300.41 BLN in fees)

Block Transaction Gas Used Reward
16738610 31 secs ago 430 19,977,660 (99.89%)
0.16001155598032753 BLN
16738609 33 secs ago 349 19,967,071 (99.84%)
1.368512730518157196 BLN
16738608 35 secs ago 430 19,959,026 (99.80%)
1.119899900678144967 BLN

pragma solidity ^0.4.24;

contract ERC20 {
    uint256 public totalSupply;

    function balanceOf(address who) public view returns (uint256 balance);

    function allowance(address owner, address spender) public view returns (uint256 remaining);

    function transfer(address to, uint256 value) public returns (bool success);

    function approve(address spender, uint256 value) public returns (bool success);

    function transferFrom(address from, address to, uint256 value) public returns (bool success);

    event Transfer(address indexed _from, address indexed _to, uint256 _value);

    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

library SafeMath {
    function sub(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a - b;
        assert(b <= a && c <= a);
        return c;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a + b;
        assert(c >= a && c>=b);
        return c;
    }
}

library SafeERC20 {
    function safeTransfer(ERC20 _token, address _to, uint256 _value) internal {
        require(_token.transfer(_to, _value));
    }
}

contract Owned {
    address public owner;

    constructor() public {
        owner = msg.sender;
    }

    modifier onlyOwner {
        require(msg.sender == owner,"O1- Owner only function");
        _;
    }

    function setOwner(address newOwner) onlyOwner public {
        owner = newOwner;
    }
}

contract Pausable is Owned {
    event Pause();
    event Unpause();

    bool public paused = false;

    modifier whenNotPaused() {
        require(!paused);
        _;
    }

    modifier whenPaused() {
        require(paused);
        _;
    }

    function pause() public onlyOwner whenNotPaused {
        paused = true;
        emit Pause();
    }

    function unpause() public onlyOwner whenPaused {
        paused = false;
        emit Unpause();
    }
}

contract AVNrich is Owned, Pausable, ERC20 {
    using SafeMath for uint256;
    using SafeERC20 for ERC20;

    mapping (address => uint256) public balances;
    mapping (address => mapping (address => uint256)) public allowed;
    mapping (address => bool) public frozenAccount;
    mapping (address => bool) public verifyPublisher;
    mapping (address => bool) public verifyWallet;

    struct fStruct { uint256 index; }
    mapping(string => fStruct) private fileHashes;
    string[] private fileIndex;

    string public constant name = "Bullion Share";
    uint8 public constant decimals = 8;
    string public constant symbol = "BLNS";
    uint256 public constant initialSupply = 21000000;
    uint256 public validationPrice = 7 * 10 ** uint(decimals);
    address public validationWallet = address(0);

    constructor() public {
        validationWallet = msg.sender;
        verifyWallet[msg.sender] = true;
        totalSupply = initialSupply * 10 ** uint(decimals);
        balances[msg.sender] = totalSupply;
        emit Transfer(address(0),owner,initialSupply);
    }

    function () public payable {
        revert();
    }

    function transfer(address _to, uint256 _value) public whenNotPaused returns (bool success) {
        require(_to != msg.sender,"T1- Recipient can not be the same as sender");
        require(_to != address(0),"T2- Please check the recipient address");
        require(balances[msg.sender] >= _value,"T3- The balance of sender is too low");
        require(!frozenAccount[msg.sender],"T4- The wallet of sender is frozen");
        require(!frozenAccount[_to],"T5- The wallet of recipient is frozen");

        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);

        emit Transfer(msg.sender, _to, _value);

        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool success) {
        require(_to != address(0),"TF1- Please check the recipient address");
        require(balances[_from] >= _value,"TF2- The balance of sender is too low");
        require(allowed[_from][msg.sender] >= _value,"TF3- The allowance of sender is too low");
        require(!frozenAccount[_from],"TF4- The wallet of sender is frozen");
        require(!frozenAccount[_to],"TF5- The wallet of recipient is frozen");

        balances[_from] = balances[_from].sub(_value);
        balances[_to] = balances[_to].add(_value);

        allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);

        emit Transfer(_from, _to, _value);

        return true;
    }

    function balanceOf(address _owner) public view returns (uint256 balance) {
        return balances[_owner];
    }

    function approve(address _spender, uint256 _value) public whenNotPaused returns (bool success) {
        require((_value == 0) || (allowed[msg.sender][_spender] == 0),"A1- Reset allowance to 0 first");

        allowed[msg.sender][_spender] = _value;

        emit Approval(msg.sender, _spender, _value);

        return true;
    }

    function increaseApproval(address _spender, uint256 _addedValue) public whenNotPaused returns (bool) {
        allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);

        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);

        return true;
    }

    function decreaseApproval(address _spender, uint256 _subtractedValue) public whenNotPaused returns (bool) {
        allowed[msg.sender][_spender] = allowed[msg.sender][_spender].sub(_subtractedValue);

        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);

        return true;
    }

    function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }

    struct TKN { address sender; uint256 value; bytes data; bytes4 sig; }

    function tokenFallback(address _from, uint256 _value, bytes _data) public pure returns (bool) {
        TKN memory tkn;
        tkn.sender = _from;
        tkn.value = _value;
        tkn.data = _data;
        uint32 u = uint32(_data[3]) + (uint32(_data[2]) << 8) + (uint32(_data[1]) << 16) + (uint32(_data[0]) << 24);
        tkn.sig = bytes4(u);
        return true;
    }

    function transferToken(address tokenAddress, uint256 tokens) public onlyOwner {
        ERC20(tokenAddress).safeTransfer(owner,tokens);
    }

    function burn(uint256 _value) public onlyOwner returns (bool) {
        require(_value <= balances[msg.sender],"B1- The balance of burner is too low");

        balances[msg.sender] = balances[msg.sender].sub(_value);
        totalSupply = totalSupply.sub(_value);

        emit Burn(msg.sender, _value);

        emit Transfer(msg.sender, address(0), _value);

        return true;
    }

    function freeze(address _address, bool _state) public onlyOwner returns (bool) {
        frozenAccount[_address] = _state;

        emit Freeze(_address, _state);

        return true;
    }

    function validatePublisher(address Address, bool State, string Publisher) public onlyOwner returns (bool) {
        verifyPublisher[Address] = State;

        emit ValidatePublisher(Address,State,Publisher);

        return true;
    }

    function validateWallet(address Address, bool State, string Wallet) public onlyOwner returns (bool) {
        verifyWallet[Address] = State;

        emit ValidateWallet(Address,State,Wallet);

        return true;
    }

    function validateFile(address To, uint256 Payment, bytes Data, bool cStore, bool eLog) public whenNotPaused returns (bool) {
        require(Payment>=validationPrice,"V1- Insufficient payment provided");
        require(verifyPublisher[msg.sender],"V2- Unverified publisher address");
        require(!frozenAccount[msg.sender],"V3- The wallet of publisher is frozen");
        require(Data.length == 64,"V4- Invalid hash provided");

        if (!verifyWallet[To] || frozenAccount[To]) {
            To = validationWallet;
        }

        uint256 index = 0;
        string memory fileHash = string(Data);

        if (cStore) {
            if (fileIndex.length > 0) {
                require(fileHashes[fileHash].index == 0,"V5- This hash was previously validated");
            }

            fileHashes[fileHash].index = fileIndex.push(fileHash)-1;
            index = fileHashes[fileHash].index;
        }

        if (allowed[To][msg.sender] >= Payment) {
            allowed[To][msg.sender] = allowed[To][msg.sender].sub(Payment);
        } else {
            balances[msg.sender] = balances[msg.sender].sub(Payment);
            balances[To] = balances[To].add(Payment);
        }

        emit Transfer(msg.sender, To, Payment);

        if (eLog) {
            emit ValidateFile(index,fileHash);
        }

        return true;
    }

    function verifyFile(string fileHash) public view returns (bool) {
        if (fileIndex.length == 0) {
            return false;
        }

        bytes memory a = bytes(fileIndex[fileHashes[fileHash].index]);
        bytes memory b = bytes(fileHash);

        if (a.length != b.length) {
            return false;
        }

        for (uint256 i = 0; i < a.length; i ++) {
            if (a[i] != b[i]) {
                return false;
            }
        }

        return true;
    }

    function setPrice(uint256 newPrice) public onlyOwner {
        validationPrice = newPrice;
    }

    function setWallet(address newWallet) public onlyOwner {
        validationWallet = newWallet;
    }

    function listFiles(uint256 startAt, uint256 stopAt) onlyOwner public returns (bool) {
        if (fileIndex.length == 0) {
            return false;
        }

        require(startAt <= fileIndex.length-1,"L1- Please select a valid start");

        if (stopAt > 0) {
            require(stopAt > startAt && stopAt <= fileIndex.length-1,"L2- Please select a valid stop");
        } else {
            stopAt = fileIndex.length-1;
        }

        for (uint256 i = startAt; i <= stopAt; i++) {
            emit LogEvent(i,fileIndex[i]);
        }

        return true;
    }

    event Burn(address indexed burner, uint256 value);
    event Freeze(address target, bool frozen);

    event ValidateFile(uint256 index, string data);
    event ValidatePublisher(address indexed publisherAddress, bool state, string indexed publisherName);
    event ValidateWallet(address indexed walletAddress, bool state, string indexed walletName);

    event LogEvent(uint256 index, string data) anonymous;
}
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