There is a mistake we do
It could be that not all the first 6050 blocks are really usable to burn the coins
I found this list
https://chainz.cryptoid.info/ixc/address.dws?nulldata.htmwhat does it means
if you scroll you find block 583005 mentioned by catacata
To find up to which block che chain is burning coins, you could procede in this way
1) start sending a small amount to one of the first addresses ever generated and see if they are added to nulldata page
2) as alternative find a way to see what addresses catacata sent coins to
3) someone here did it in the past, how did you donate ixc?
for method number one you could for example to
address block 5
address block 10
address block 50
address block 100