Searching/Refreshing disc data from Internet

Audio Components Transports
21

Hello,

Considering this example:

https://musicbrainz.org/cdtoc/d9tmxUeDMhGevF4iLGbcPt0aV28-

When requesting data for a newly inserted audio CD, does the DMP submit to MusicBrainz:

  1. the “standard” audio CD Disc ID? (8e0a880c) (used by FreeDB, Exact Audio Copy…)
  2. the MusicBrainz computed Disc ID? (d9tmxUeDMhGevF4iLGbcPt0aV28-)
  3. the full CD-TOC it self? ( 12 202393 150 10516 35975 48875 68137 84500 102319 120974 136025 154202 171275 180389)
  4. …
What happens if different albums are found with exactly the same Disc ID (= same TOC)?

Eg:

https://musicbrainz.org/cdtoc/lwHl8fGzJyLXQR33ug60E8jhf4k-

https://musicbrainz.org/cdtoc/rde4f945zNTeexyW9Z5cilAM2ig-

Does it return the first result?

Is the disc ID for a SACD layer also computed using the TOC (I mean TOC of the SACD layer (does this exist for SACD?), not the hybrid CD layer). Or is it computed differently?

Thank you in advance.

Kind regards.