Bitcoin Core v30 Upgrade Sees Unexpected Change
Bitcoin Core developers have made a significant last-minute decision to reverse the deprecation of user configurability for OP_RETURN's default datacarriersize just hours before the release of Core version 30 (v30).
This change was merged into the master branch via GitHub and represents a notable victory for Knots node operators who had strongly opposed the original deprecation plan. The reversal demonstrates the ongoing collaborative development process within the Bitcoin ecosystem, where community feedback can directly influence core protocol decisions.

The decision to maintain user configurability ensures that node operators retain flexibility in how they handle OP_RETURN transactions, which are commonly used for embedding data on the Bitcoin blockchain. This preservation of functionality is particularly important for applications relying on data embedding capabilities and maintains backward compatibility for existing implementations.
The timing of this reversal—occurring literally hours before the v30 release—highlights the dynamic nature of Bitcoin protocol development and the importance of last-minute community consensus in shaping the network's evolution.





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