Automize Talent Discovery – Guide to Hiring with Proof-of-Talent
December 19th, 2022

Proof-of-Talent protocol aggregates talent signals from GitHub, Stack Overflow, and various on-chain sources to web3 portfolios. Skill Scores measure previous work and showcase talent within narrowly defined areas of expertise. Combined with on-chain credentials and off-chain achievements, Proof-of-Talent enables effective talent sourcing for web3 jobs and objective skills measurement for better hiring decisions.

What is Proof-of-Talent?


Proof-of-Talent verifies skills with visual NFTs for web3 developer portfolios.

As a reputation protocol, Proof-of-Talent measures talent by storing achievements on the blockchain and calculating skill scores based on them. It empowers people to build their professional reputation and web3 resumes by aggregating achievements that are verified with on-chain and off-chain records.

Users can create Skill Scores with the help of Proof-of-Talent: the protocol aggregates achievements, assigns weights for them, and calculates skill-specific scores that can be minted as non-transferrable NFTs. The level of skill is determined by the quality and quantity of achievements and is represented by the number of tokens.

To calculate Skill Scores, we have issued +100 other Proof-of-Talent badges that represent various achievements. The protocol reads data from GitHub and Stack Overflow and stores verified records of one’s work on Polygon. Users can mint non-transferrable NFTs (”soulbound tokens”) based on successful attestations and use them to prove individual achievements and as the basis of Skill Scores.

How does Proof-of-Talent measure skills?

Skill Scores

Proof-of-Talent protocol combines and assigns weights to achievements from GitHub, Stack Overflow, and various on-chain data sources. Skill Scores represent skills based on these verified achievements, showcased by skill tokens (Polygon-based non-transferrable NFTs).

We have separated achievements into 4 categories – Activities, Courses, Contributions, and Shipping. Each category has a different weight that’s assigned for its achievements. Skill Scores are calculated as a weighted sum of all achievements a person has, applying category-specific weights. A user can mint as many NFTs as their score is.

Skill Scores measure both the quality and the quantity of development achievements. Category-based weights assign exponentially increasing importance to achievements that require more skill. The more you have these achievements, the deeper experience you have with the respective technology, leading to a higher Skill Score.

Currently we have issued 4 Skill Scores: Solidity, Rust, Python, and TypeScript development. We will issue new Skill Scores during 2023, looking also for expanding from development to other areas of expertise. Check out all Skill Scores here.


Achievements showcase valuable projects or contributions with badges. They store data from off-chain sources to blockchain and represent them with non-transferrable NFTs.

By December 2022, we have issued +100 different Proof-of-Talent badges for development achievements in various categories. To create a badge, our smart contracts check whether certain actions have happened; store proof of that on another smart contract; and enable the user to mint Polygon-based badges to visualize their achievements in their web3 resume. For technical details, check out our docs.

Today, we support GitHub and Stack Overflow-based achievements. Achievement categories are:

  • GitHub Stargazer: Level-based badges to showcase the cumulative number of GitHub stars in the user’s repositories

  • Organization Contributor: Open-source contributions to certain organizations’ public repositories with at least 1 successfully merged pull request

  • Project Contributor: Similar to Organization Contributor, but for contributions to certain reputable open-source projects

  • Builder, Contributor, and Reputable Contributor: Language-based badges, showcasing the creation of repositories, contribution to public repositories, or contribution to public repositories with at least 5 GitHub stars (respectively) using a specific technology

  • Stack Overflow Knowledge: Level-based badges for language-specific reputation in Stack Overflow

  • Courses: Completion of certain development courses, provided by reputable web3 projects

We will implement more achievement badges to additional categories in the future, looking also for adding new off-chain data sources for badges. Check out all badges here.

How can I use Proof-of-Talent for hiring?

Proof-of-Talent can be used as a talent measurement system to evaluate skills when hiring developers for web3 jobs.

Proof-of-Talent verifies all relevant developer achievements and combines them for Skill Scores. Thus, it complements traditional resumes and focuses primarily on the actual skills the developer has demonstrated.

The main benefits Proof-of-Talent offers recruiters:

  • Recruitment pipelines can be built with badges that give an actionable overview of one’s project history and experience

  • Different contributions are visible, verifiable, and comparable

  • Skills-based hiring is possible without extensive technical testing in the early phases of the recruitment process

Employers and recruiters can post jobs to Kleoverse, evaluate builders based on their Proof-of-Talent badges and web3 portfolios, and invite verifiably talented developers to interviews. We also represent the scores on our leaderboard and in users’ web3 portfolios to ensure frictionless and transparent talent discovery.

50,000 web3 builders are already building their web3 portfolios with Proof-of-Talent. They can be directly reached via Kleoverse. Learn more and get started here.


Proof-of-Talent enables transparent talent measurement and skills-based developer hiring with Skill Scores and +100 achievement badges. Kleoverse provides a toolkit for posting jobs, going through user profiles, and reaching out to 50,000 web3 builders with web3 portfolios.

You can start posting jobs and discovering builders today at Kleoverse, or schedule a demo with Kleoverse Founders to learn more!

Subscribe to Kleoverse
Receive new entries directly to your inbox.
View collectors
This entry has been permanently stored on-chain and signed by its creator.