Well, you can&#x27;t prune the blockchain until you have fully downloaded and verified it anyway. So if no clients are hosting the full, complete blockchain then you won&#x27;t be able to sync at all, which will be bad for everyone.<p>You could theoretically get around this by starting sync from a known (hard coded) recent block + UXTO set, but at that point you are losing _all_ transaction history, not just your OP_RETURNs. So, I don&#x27;t think OP_RETURN data added to the blockchain today will be going anywhere fast.