Originally posted by Popal
Is there a way to make the difference between them ?
What for ?
- Disc Identification Code
5-1-5. Registration and distribution of a permanent code
An issued permanent code is registered on a permanent code list by the secretariat...
Permanent code is valid perpetually.
5-1-6. Invalidation of a permanent code
A permanent code issued once shall not become invalid.
5-2. Type code
Each manufacturer controls a type code.
That is, each disc manufacturer defines characteristics of their own disc.