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The decision to raise the OP_RETURN data limit to nearly 4 MB has sparked an ideological conflict over Bitcoin's identity as either a financial tool or a privacy‑enhancing platform

The OP_RETURN data limit expansion in Bitcoin Core 30 has led multiple developers and ecosystem leaders to raise the possibility of a hard fork, citing concerns over governance transparency and lack of community consensus

The removal of the OP_RETURN data limit in Bitcoin Core 30 has prompted criticism over potential network spam, centralization risks, and erosion of Bitcoin's founding principles, while advocates point to benefits such as cleaner UTXO sets and expanded programmability

Bitcoin Core version 30, scheduled for release in October 2025, will increase the OP_RETURN data limit from 80 bytes to nearly 4 MB

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