Obscure (hidden/unique) knowledge/information is a level of the scaled Knowledge Hierarchy. Knowledge may be ciphered/encrypted by various means.
This is knowledge almost never part of any recorded information, or recorded in such a way as to render it virtually unknown to all within a given setting. Typically such information is for the Game Master or the most complete and highest quality sources only. It has no set, specific parameters for its discoverability or scope – it is simply not available as part of any typical body of knowledge.
Example Scope of Knowledge: Although expressed as myth and metaphor, knowledge of the ancient “firsts” of the iVerse is not known or disseminated by any in any literal or meaningful way.
Typical target difficulty is DC 30; Learning/Knowledge (skill/Trait) level(s) 21+.
i20 Skills REPLACE d20 skill proficiency: Add the skill level + modifiers to the check ( Proficiency Bonus not used).
A single Result Check to assess Success or Failure AND quality which may be impacted by conditions which indicate a Lack of Capability (Unfamiliar, Unproficient, etc.). The GM can { } Narrate it, and players may request an appropriate impact when anything other than a basic outcome is indicated. Character Points are Rewarded by the GM to improve Skills (and other Features).