Bitcoin Core model 30.0 is now out there, marking the undertaking’s first main launch since v29 and shutting the ebook on legacy branches 27.x and older, which at the moment are designated “Finish of Life.” The maintainers’ launch notes state plainly: “With the discharge of this new main model, variations 27.x and older are at ‘Finish of Life’ and can now not obtain updates.” The brand new binaries and full notes are dwell on the undertaking website, with the staff additionally posting a quick launch affirmation on X.
Bitcoin Core V30 Is Right here
Probably the most disputed change in v30 is a coverage replace round OP_RETURN—the script path used for provably unspendable outputs that may carry arbitrary information. Bitcoin Core has raised the default -datacarriersize restrict to 100,000 bytes and now permits a number of data-carrier (OP_RETURN) outputs in a single transaction for relay and mining. Crucially, node operators can nonetheless restore the earlier habits: “It may be overridden with -datacarriersize=83 to revert to the restrict enforced in earlier variations.” The mixture dimension restrict applies throughout all OP_RETURN outputs in a transaction.
That default improve—functionally “uncapping” information service dimension as a result of the transaction-size ceiling will probably be encountered first—has kicked off a broader argument about what sorts of exercise Bitcoin’s coverage layer ought to favor or discourage. Builders and node operators who again the change body it as impartial plumbing that preserves operator selection; critics warn it invitations extra non-monetary inscriptions and potential spam, elevating storage and validation burdens for the typical node.
Past OP_RETURN, v30 delivers a protracted listing of community, pockets, and tooling updates. The P2P layer improves package deal relay in order that widespread topologies like grandparent-parent-child or multi-parent-one-child can propagate extra reliably when just one ancestor wants price bumping. The transaction orphanage introduces stronger DoS limits based mostly on complete entries and weight throughout friends, changing the now-retired -maxorphantx knob.
Miners achieve an experimental IPC mining interface accessible by a brand new umbrella bitcoin command that additionally supplies comfort aliases—“bitcoin node,” “bitcoin gui,” and “bitcoin rpc”—with out deprecating present binaries. Exterior signing on Home windows is re-enabled, and the coinstats index has been reworked to keep away from an overflow bug seen on default Signet, requiring a one-time resync of that index.
Price-policy defaults additionally shift. The minimal block feerate setting (-blockmintxfee) now defaults to 0.001 sat/vB, whereas each the minimal relay and incremental relay feerates default to 0.1 sat/vB. The notes stress that except these decrease defaults are broadly adopted, propagation and affirmation will not be assured; pockets feerates themselves are unchanged with out express configuration.
The OP_RETURN coverage change has shortly spilled past developer channels into Bitcoin’s public discourse, with long-time contributors and publication editors lining up on each side. Whereas Bitcoin Core 30.0’s bigger data-carrier default and allowance for a number of OP_RETURN outputs are considered by proponents as coverage impartial and adjustable on the node stage; detractors see a vector for abuse that blurs the community’s financial focus which might even spark a tough fork.
At press time, BTC traded at $114,455.
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