Could someone clarify what is the standard for OP_RETURN? As far as I understand the data is limited to 80B and only one OP_RETURN is allowed in one transaction, if not the tx is non standard, correct?

Then the debate can be to store in witness indeed

Or you can store in output addresses (with super big size), then you will never be able to spend the dust and we have a utxo forever

In any case there is a storage workaround, probably others exist, not sure why people are so opposed to a OP_RETURN bitcoin storage (I thought the max size was 512B, but apparently I am wrong, 80B is ridiculous, can't do anything with this, except bypassing this limit by other worse means)

Storage is the main difference between bitcoin and other systems (ethereum), without it, repeating myself here again the future of bitcoin is very limited

PS: I saw the answer of Peter, I am proposing something else for timestamp proofs

Le 01/02/2023 à 01:46, Christopher Allen via bitcoin-dev a écrit :
All other things being equal, which is better if you need to place a 64-bytes into the Bitcoin blockchain? A traditional OP_RETURN or a spent taproot transaction such as:

OP_FALSE
OP_IF 
OP_PUSH my64bytes
OP_ENDIF

I know that the anti-OP_RETURN folk would say “neither.” But if there was no other choice for a particular protocol, such as a timestamp or a commitment, which is better? Or is there a safer place to put 64 bytes that is more uncensorable but also does not clog UTXO space, only spent transaction `-txindex` space?

My best guess was that the taproot method is better, but I suspect there might be some who disagree. I'd love to hear all sides.

-- Christopher Allen



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