21. The non-transitory computer readable medium according to claim 19 , wherein the method performed by the computer system operating according to the executed computer instructions further comprises authenticating the corpus and corpora at a particular time as a function of the plurality of watermark trees, wherein the authenticating includes selecting a watermark tree from the plurality of watermark trees that has a time stamp that corresponds with the particular time designated in the authenticating of the corpus and corpora, recursively transversing the hierarchical pointers in the watermark tree to measure whether a feature watermark associated with each parent in the hierarchical relationship can be validated as having a valid feature watermark.
21. The non-transitory computer readable medium according to claim 19 , wherein the method performed by the computer system operating according to the executed computer instructions further comprises authenticating the corpus and corpora at a particular time as a function of the plurality of watermark trees, wherein the authenticating includes selecting a watermark tree from the plurality of watermark trees that has a time stamp that corresponds with the particular time designated in the authenticating of the corpus and corpora, recursively transversing the hierarchical pointers in the watermark tree to measure whether a feature watermark associated with each parent in the hierarchical relationship can be validated as having a valid feature watermark. 22. The non-transitory computer readable medium according to claim 21 , wherein the method performed by the computer system operating according to the executed computer instructions further comprises invalidating a parent in the hierarchical relationship that fails to have a valid feature watermark, and invalidating all children in the hierarchical relationship that depend from the invalidated parent.