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Trenzl Crypto Index Definition

Since there are many questions about the way the Trenzl Crypto Index is assembled, a special page is devoted to its definition. Basically the calculation comes down to counting hits for the search queries

+"<crypto> crypto"

In the next few sections it is explained what search engines qualify, what cryptos qualify and how the ratings are exactly calculated.

Search Engines

There are 25 search engines that are used to calculate the Trenzl Crypto Index. The selected search engines are the 25 highest ranked websites of Alexa that meet the following conditions:

Based on these criteria the following search engines are qualified:

The following search engines didn't qualify for the indicated reason:


In this section it is clarified what counts as a crypto for the Trenzl Crypto index. There are 2 requirements that should all hold:

In order to filter out false positives, two mechanisms are used. First of all a confidence is defined for a crypto. By default the confidence is 100%, but for some difficult search queries, the confidence will be lower. Apart from the confidence, sometimes also exceptions or mandatory additions are used to weed out false positives.

The following table contains all cryptos tracked including its groupings, confidences and exceptions.


The ratings are calculated by counting hits of the most popular search engines. The search queries that are used are

+"<crypto> crypto"

The number of hits determines the ratings of a crypto. The counted hits are normalized for each search engine for all cryptos in the list. In other words, all cryptos together have a score of 100%. Let's define "hits(SE)" as the sum of the number of hits for all cryptos for search engine SE and "hits(PL,SE)" as the number of hits for crypto PL for search engine SE. Possible false positives for a query are already filtered out in the definition of "hits(PL,SE)". This is done by using a manually determined confidence factor per query. The first 100 pages per search engine are checked for possible false positives and this is used to define the confidence factor. If this factor is 90%, then only 90% of the hits are used for "hits(PL,SE)".

The ratings are calculated with the following formula:

((hits(PL,SE1)/hits(SE1) + ... + hits(PL,SEn)/hits(SEn))/n

where n is the number of search engines used.

Artifacts or ideas on improving the calculation of the Trenzl Crypto Index will be received with gratitude (