Does any current SegWit or blocksize increase proposal also seek an increase in the OP_RETURN byte limit?


Are there any current pull requests that seek an increase in the current 80 byte limit?

If the current OP_RETURN byte limit is 80, why does the StackExchange "op-return" tag still reference a 40 byte limit?

"An opcode that allows you to create an unspendable transaction output that stores up to 40 bytes of data."

1 Answer 1


Currently, there are no BIPS (Bitcoin Improvement Proposals) that seek to increase the 80 byte limit as you can see here.

Doing a cursory search on that repository, you can see that only a few mention OP_RETURN at all.

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