What is the latest write-once optical storage media?

Digital paper is a write once optical storage medium on which data can be recorded a single time.

A magneto optical disk is rewritable, so it is not a write once medium.

A WORM disk is write once but an older technology, not the latest.

A CD-ROM is factory pressed and read only, so users cannot write to it at all.

Write once media allow one recording that then stays permanent and unchangeable.

Such media suit archives where records must not be altered later.