All content is for entertainment purposes only and no guarantee is given as to its accuracy or fitness for any purpose. It is subject to change on a regular basis.

Rarity calculations are similar to those used by many other rarity sites. If you're interested in the theory behind the rarity calculations, this article gives a very good overview.

For most collections, each NFT is ranked by:

• Assigning a score to each attribute based on the number of other NFTs with the same value for the attribute. The exact formula is:
  attribute score = number minted / number with same value
• All attribute scores are summed to give a total score for the NFT.
• NFTs are ranked starting at rank 1 for the highest score (rarest) to lowest score (least rare).

The method used here to calculate an NFT's rarity based on individual attributes, while good, does have some shortcomings:

• At lower rarity levels, where the bulk of the NFTs sit, NFTs can be very different in rank despite having similar scores.
• As the combination of attributes possessed by an NFT aren't considered, the algorithm cannot determine the uniqueness or rarity of the NFT as a whole. If a particular combination of attributes is considered particular rare and valuable, this may not be reflected in the rarity ranking.

Meep Headz rarity ranks use the OpenRarity algorithm.

At Theta Rarity we choose not to use this algorithm as it has what we consider to be several significant shortcomings. However, for the sake of the community, and in order to avoid introducing unnecessary confusion by publishing a separate ranking system, we have adopted that method for this site.

The creators released the rankings for all Cyko Headz (including those not yet minted) at the time of the drop, so their rankings will not change as more Cyko Headz are minted.