The common Blu-Ray media (BD-R, not BD-R LTH) discs use a non-organic dye and should be more resilient than DVD-R or CD-R media. According to this source [1] 100-150 years data retention.
Edit: note also, BD-R writers immediately read back and check written data, re-writing damaged sectors to a spare area. This in-hardware defect management should make BD-R more resilient against data corruption than DVD-R or CD-R [2].