Yes, i understand that. But the rule is stopping it on my node, correct? I can’t control other people’s nodes if they allow it in a block. So currently someone with a node that allows a large file to be put in a block can do it. I see, it just won’t be from my node. Next question if it code maintenance, changing it from 80 to 100000 bytes, how does this remove dead code?

So, does the current implementation of Core (<30) allow for an OP_RETURN of 100 bytes to make in in to a block? Are there currently 100 byte OP_RETURNS in the blockchain?