We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
This is a fiction/fan codex: entries describe an in-universe canon. Our audits check canon and internal consistency — external fact-checking does not apply the way it does on real-subject codexes.
Last full accuracy audit: 2026-08-18 · 29 entries checked · 14 flagged · 23 issues confirmed · 14 corrected · 9 still open
Ozzy Osbourne — The entry states Osbourne performed on Black Sabbath's first nine studio albums, but he actually performed on the first eight studio albums (up to and including Never Say Die! in 1978). The ninth studio album, Heaven and Hell (1980), featured Ronnie James Dio
Ozzy Osbourne — The entry says Osbourne's solo career produced thirteen studio albums, but as of the widely-known canon, he has released twelve studio solo albums (the most recent being Patient Number 9 in 2022).
Tony Martin — The entry states Martin's debut album 'The Eternal Idol' (1987) followed the Sun City, South Africa shows during the apartheid era, but those shows occurred in 1988, after the album's release.
Ian Gillan Era — The successor listing is factually wrong: after Gillan left, the next lead vocalist for a studio album was Tony Martin, not Glenn Hughes; Glenn Hughes sang on 'Seventh Star' which was a Tony Iommi solo project released under the Black Sabbath name.
Ronnie James Dio Years — The entry implies Dio was involved in the follow-up album to 'Mob Rules' ('Born Again'), but Dio did not record or perform on 'Born Again'.
Cozy Powell Drummer Years — The claim that 'the band was navigating the end of an era with their lead singer preparing to leave for solo work' is factually incorrect for the Cozy Powell years: Ronnie James Dio did not leave Black Sabbath for solo work during Powell's tenure; Dio left in
Vinny Appice Drummer Years — Vinny Appice did not play on the Heaven and Hell album; he joined Black Sabbath after that album's release and first appeared on the Mob Rules album.
Vinny Appice Drummer Years — Heaven and Hell should not be listed as a key album for Vinny Appice, as the drummer on that album was Bill Ward.
Eric Singer Drummer Period — Eric Singer did not replace Vinny Appice mid-tour; Vinny Appice completed the Dehumanizer tour. Singer replaced Appice after the tour ended, for a few shows in 1992 and then for the 1993 tour with Tony Martin.
Eric Singer Drummer Period — The claim that Singer did not perform on the Cross Purposes tour is incorrect; he performed on the 1993 tour that supported the Cross Purposes album.
Geezer Butler — The 'DID YOU KNOW' section states that Butler wrote the lyrics for 'Iron Man', but in established canon the lyrics were written by Ozzy Osbourne.
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