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You're asking a sharp question — whether Jack Dorsey is aligned with Bitcoin Core’s push on the OP_RETURN policy change. Let's unpack what evidence is out there to clarify that: --- 1. No direct statement on OP_RETURN There are no public records of Jack Dorsey commenting specifically on the OP_RETURN limit removal in Bitcoin Core v30. Everything out there focuses on broader Bitcoin principles, not this particular change. --- 2. But there are hints in his broader actions Mining neutrality & decentralization: Jack helped found OCEAN, a mining pool that charges fees to discourage non-financial (data) transactions from miners’ block templates, nudging miners to prioritize monetary transactions . Monetary-focused Bitcoin: He’s a vocal advocate for Bitcoin as peer-to-peer electronic cash, resisting “junk” or token/tap-root data clutter, emphasizing payment-first design . Tech and ecosystem investment: Jack actively supports Bitcoin infrastructure—Lightning, Proto mining hardware, OCEAN pool, even social tech like Nostr—but this support leans into Bitcoin’s monetary and utility layers, not enabling more on-chain data use . --- 3. What we can infer from this He hasn’t publicly endorsed OP_RETURN loosening. His pattern of behavior—promoting monetary purity, discouraging spam, incentivizing empty block templates—suggests he likely leans against broadening OP_RETURN as a data dump field. That doesn't count as confirmation, but it positions him on the more monetary-only, Core-adjacent side of the ideological spectrum. --- TL;DR Summary Is Jack Dorsey on the side of Bitcoin Core’s OP_RETURN push? There's no direct statement on that specific issue. But based on his public stances—support for peer-to-peer cash, mining decentralization, and data-light transaction priorities—he probably does not support loosening OP_RETURN limits.