Truth is derived solely from consistency where an inconsistent statement such as 2 + 2 = 5 still necessitates 2 and 5 as existing as true in the respect they exist. 2 and 5 show consistency through the replication of the counted phenomena which form them, yet it is also true that 2+2=5 is a contradiction. On one hand truth exists through consistency, on the other hand the truth of 2+2=5 is true as inconsistent.
Any contradiction, as inconsistent, is derived from truth values which are true as existing. This existence is consistency. This consistency is replication. 2+2=5 is true as a contradiction, in other words it is true to state a contradiction occurs. 2+2=5 repeats as a consistent contradiction.
One could state that truth value is necessitated by consistency, with there being multiple grades of consistency, but this does not negate the fact with the absence of consistency that consistency does not exist. One can have an inconsistent statement with multiple sub consistencies available thus necessitating that while consistency is necessary for truth an absence of consistency still allows for consistency to exist.