> For the complete documentation index, see [llms.txt](https://docs.octan.network/octan-docs-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.octan.network/octan-docs-en/overview/octan-reputation-solutions/reputation-score-concepts.md).

# Reputation Score Concepts

## What is Reputation Score?

In the Web3 space, Reputation Score is a metric to measure the trustworthiness and reliability of an account within a group of users, under certain criteria. A higher score means the more important the account is.

## How is the Reputation Score calculated?

Octan Labs has developed innovative ranking algorithms, similar to PageRank algorithms, to calculate RS based on on-chain transactions. The algorithms take into account the frequency, priced value, age and types of transactions, as well as other factors such as community engagement and participation.

<figure><img src="/files/UoYYLNnJXuzr86UlwXBe" alt=""><figcaption></figcaption></figure>

## Related Concepts

**Global Reputation Score (GRS)** quantitatively measures the importance and quality of an account in relation to others entirely on a blockchain, regardless if the account is an EOA (External Own Account associated with private key) or contract (no private key). It is computed from on-chain transactions entirely on the blockchain. From GRS, it is partitioned into two disjoint groups: contracts vs EOAs. From the EOA group, exchange or custodial wallets are filtered out to obtain a pure list of end-users’ wallets for further classification, qualification and segmentation.&#x20;

**Category Reputation Score (CRS)** is computed from on-chain transactions related to a specific category (i.e. DeFi, NFT, DAO, SocialFi, GameFi subspaces) entirely on a blockchain. From CRS, we can partition into contract vs EOA groups, then obtain Wallet CRS and Contract CRS (hence project’s CRS) associated with a specific category (i.e. within a specific subspace) in a certain blockchain.

{% hint style="info" %}
**E.g.**&#x20;

DeFi Reputation Score is computed from on-chain transactions related to DeFi subspace in a blockchain.&#x20;

NFT Reputation Score is computed from on-chain transactions related to NFT subspace in a blockchain.
{% endhint %}

**Project/Dapp-based Reputation Score (PRS)** quantitatively measures the importance and quality of accounts interacting with a specific project’s contracts on a certain blockchain. This is actually a projection of the entire chain into a (smallest-type) subspace formed by the Dapp’s contracts. From PRS, we filter out EOAs to obtain a list of all project’s users.

{% hint style="info" %}
**DID YOU KNOW THAT:**

[Octan's Reputation Ranking System](https://docs.octan.network/octan-docs-en/reputation-scoring-and-analysis-services/inception) provide 3 distinct schemes regarding wallet reputation score and project-related reputation score, allowing various segmentation and filtering levels for different purposes such as marketing, market report or investment reference.&#x20;

[Contact us](https://docs.octan.network/octan-docs-en/support/contact-us) today to learn more!
{% endhint %}

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