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TLDR Bitcoin Core has removed downloads for Version 30 (v30) due to a serious bug that could potentially wipe out funds in Satoshi-era wallets for users who did not back up their Berkeley DataBase (BDB) files prior to upgrading. This issue also exists in Version 30.1, which was intended to be a more secure release. Developers are urging users to back up their files and await Version 30.2, which will include a bug fix. The bug poses a risk to early coiners and those who have enabled pruning, as it could lead to the complete deletion of their wallets. The vulnerability does not affect node operators who use hardware wallets to store their private key data.

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