Hello guys,

 I was checking the blocks that rewarded more than 4 ETC for the block mined.

Unusual Block rewards that emitted are:

109, 214, 319, 424, 529, 634, 739, 844 ...

by checking these numbers i found a pattern.

they are multiples of 105.

If the block reward is
  109 == 1x105 + 4 (here 4 is normal block reward ie 4 ETC. )
  214 == 2x105 + 4
  319 == 3x105 + 4
  424 == 4x105 + 4  
  529 == 5x105 + 4  and so on...

will give some blocks to verify

block 7294464 , Block reward 109 etc
block 7294466 , Block reward 214 etc
block 7294501 , Block reward 319 etc
block 7294503 , Block reward 424 etc
block 7294536 , Block reward 529 etc
block 7294628 , Block reward 634 etc
block (no block found on this) , Block reward 739 etc
block 7294513 ,7294593 ,7294631 , Block reward 844 etc
block 7294747 Block reward 1894 etc

block 7294687 , Block reward 758.49 etc. This one mismatched the above sequence.

Block 7294779 is the last block with 109 ETC reward that has abnormal block reward. After this i didn't found any.

If you trace backwards from 7294779 block you can see the above patterns randomly.

One more Interesting thing i found is a common wallet address txns in abnormal block reward blocks.

ETC wallet address: 0xb71EE6225Ac2904B61941797781ad5Cb9182371d

if a block have transaction from above address there is a abnormal block reward.

if a block have 1 trxn from above address  , block reward is 109 ie 1 x 105+4
if a block have 2 trxn from above address  , block reward is 214 ie 2 x 105+4
and so on until highest block reward... (check for yourself)

After block 7294779 this whole thing stopped.

Today in block 7305515, there are transactions fron above etc address. but there is no abnormal block reward.

Is this a hack or something else i don't know. Experts have to analyse and answer.

Looking forward to get some clarity on the issue.

Thanks