My understanding is that we have 4mb max block size and if 1 transaction is 4mb they will have to pay massive fees because the bigger the transaction the more fees they have to pay.
There is a huge cost to spam.
I am not worried about this
Discussion
Fees are set by price-per-byte, not by “big transaction = big fee.”
When blocks aren’t full, the price floor is tiny, so a blob that fills an entire block can ride in for that same low rate—cheap for the sender, but every node must download and keep those extra megabytes forever.
It's sat/ vb and if op return size is bigger, it's more vb. Right ?
Exactly—they pay a one-off fee in the low hundreds to a few thousand dollars, then that blob sits rent-free on every full node’s disk forever.
