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Home/Bitcoin News/Bitcoin Core Update Sparks Controversy Over OP_RETURN Limit
Bitcoin News

Bitcoin Core Update Sparks Controversy Over OP_RETURN Limit

Toby Morgan
Toby Morgan
Published:May 12, 2025
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Bitcoin Core’s removal of OP_RETURN size limit incites debate and node migration.

What to Know:
  • Bitcoin Core removes OP_RETURN size limits, prompting community debate.
  • Bitcoin Knots sees node migration surge.
  • Potential changes in BTC fee dynamics are anticipated.

Bitcoin Core developers announced a controversial decision to remove the OP_RETURN size limit, igniting significant debate within the Bitcoin community.

The update could impact Bitcoin’s fee market and node diversity, as community leaders voice strong opinions.

Bitcoin Core Lifts OP_RETURN Restrictions, Ignites Debate

The decision to remove the OP_RETURN size limit was made by Bitcoin Core developers. This change aligns with a minimalist rules philosophy, according to contributor Greg Sanders. In opposition, Luke Dashjr defended the existing limits as a part of Bitcoin Knots, emphasizing control over data storage and transaction relay.

This change is utter insanity. — Luke Dashjr, Lead, Bitcoin Knots

Bitcoin Knots Gains Popularity Amid Node Migration

Bitcoin Knots’ node share has risen to about 5% as some operators transition. Samson Mow encourages refusal of the update.

The update is expected to affect Bitcoin’s fee dynamics and might lead to increased mempool congestion, raising concerns about blockchain bloat.

Fee Market Implications and Community Concerns

Past blocksize debates led to client-side splits and fragmentation through forks, similar to current tensions. Potential outcomes include increased adoption of alternatives like Bitcoin Knots and altering fee market mechanics.

Disclaimer: The information on this website is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency markets are volatile, and investing involves risk. Always do your own research and consult a financial advisor.

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