The era of Polkadot 2.0 has arrived, with 219 developers completing the Solidity course.

Polkadot, with its modular and cross-chain interoperability design philosophy, lays the foundation for building the next generation of Web3 applications. With the full upgrade to Polkadot 2.0, Polkadot will soon fully support EVM-based smart contract development, opening the door to a multi-chain future for Solidity developers. Mastering the ability to build smart contracts using Solidity on Polkadot will be key for developers to gain a competitive edge.

The recently launched 【Blockchain Technology Development｜Solidity Development on Polkadot】 17th session course is designed to seize this opportunity. The course covers the full spectrum of content from the basics of the Solidity language to smart contract security, balancing theory and practice, helping developers build secure and reliable applications on Polkadot.

This course will start on March 7, 2025, and end on June 19, lasting more than 3 months. It consists of seven class sessions and 15 online events, building a complete skill system from language fundamentals to security practical training. A total of 219 developers registered, and 78 students successfully graduated.

During the hackathon held as part of the course setup, 81 developers submitted 18 exciting projects, and ultimately 15 projects stood out to share a prize of 2000U.

Key Data Overview

• Total Media Exposure: 78,628 times
• Course Registration: 219 people
• Graduated Students: 78 people
• Outstanding Students: 51 people
• Online Events: 15 sessions
• Assignment submission: 651
• Hackathon project submissions: 18

Course Enrollment Data

This course attracted a total of 219 developers from various regions across the country, with different backgrounds participating. The student profile shows several significant trends:

1. The student community is actively laying out Web3.

The proportion of post-00s reaches 32%, the proportion of students is 25%, and those with no development experience account for 20%, indicating that a large number of post-00s are treating Web3 as a starting point for their careers, actively seeking a growth path from learning to practice.

2. The trend of transition from Web2 to Web3 is significant.

The proportion of Web2 developers is 36%, with those having more than 5 years of development experience accounting for 31%. The most commonly mastered programming languages are Python 21%, JavaScript 18%, and Java 14%, indicating that a large number of traditional developers with programming backgrounds are transitioning into the Web3 field.

3. There is a strong demand for Web3 professional advancement learning.

21% of the developers are either employed or independent Web3 developers, with those proficient in Solidity and Rust accounting for 12% and 8% respectively. This indicates that many students already have a foundation in Web3 programming and hope to advance or supplement their learning through the course.

( Detailed Data of Student Profiles

Gender Ratio: In this course, the majority of the students are still male, accounting for 89%. There are 24 female students, accounting for 11%.

Age distribution: The overall trend of the students is showing a clear younger demographic, with those born in the 1990s and 2000s occupying a dominant position, accounting for a total of 80%), with 48% from the 1990s and 32% from the 2000s(. Moreover, there are still 18% of students from the 1980s and 2% from the 1970s, indicating that experienced developers are exploring career transitions.

Education Distribution: The overall educational level of the students in this course is relatively high, with 89% holding a bachelor's degree or higher ). The percentage of students with a bachelor's degree is 68%, master's degree is 20%, and doctoral degree is 1% (.

The position of learners: Web2 developers account for 36%, becoming the largest group, reflecting the talent flow trend of the traditional internet transitioning to Web3; the student group accounts for 25%, indicating that the course is an important way to cultivate newcomers in Web3; existing Web3 developers account for 21%, showing the willingness for advanced/supplementary learning in this field.

Development Experience: The development experience of students in this course shows diversity. Senior developers with over 5 years of experience account for the highest proportion at 31%, indicating that the course content has a certain appeal to experienced developers.

Students with less than 1 year of experience account for 18%, those with 1-3 years account for 17%, and those with 3-5 years account for 14%, indicating the demand for courses among developers in the early stages of their careers.

The proportion of inexperienced students is 20%, while the distribution of student positions shows that the student group accounts for 25%, indicating that some students are actively preparing for the Web3 track and plan to make Web3 the first stop in their career.

Programming Language Proficiency: In this course, the programming languages mastered by the students are diverse, with Python and JavaScript having the highest proportions at 21% and 18%, respectively. Java ranks third with a proportion of 14%. This structure indicates that the majority of students possess solid general programming skills.

Solidity accounts for 12%, Rust accounts for 8%, indicating that many students already have a basic understanding of Web3 programming and hope to advance or supplement their learning through the course.

Go and C/C++ each account for 10%, and overall, the programming foundation of the students is relatively solid.

City Distribution: The top-ranking provinces/municipalities are Guangdong )37 people ###, Shanghai (30 people ), Beijing (24 people ), Sichuan (21 people ), Jiangsu (20 people ), and Zhejiang (20 people ), concentrated in first-tier and coastal provinces.

Course Format

The course consists of 1 introductory lesson material + 6 recorded video lessons + 7 Task assignments + 2 live presentation sessions + a hackathon. During this 3-month period, we assisted 219 developers in delving into the Polkadot ecosystem and successfully embarked on their Web3 exploration journey.

( Course Outline

This course revolves around the development practice of Solidity on Polkadot, with content progressing from basic to advanced levels.

In the early stage, lead students to establish a basic understanding of Polkadot, Solidity, and EVM, mastering contract structure, syntax, and calling methods; the third lesson delves into advanced topics such as call and delegatecall, upgradable contracts, and the implementation logic of DEX; lessons four and five introduce commonly used smart contract libraries such as ether.js, web3.js, and viem.js, and enhance development skills through a practical DEX project; finally, the sixth lesson focuses on smart contract security, helping students identify common attack methods and master basic defense and auditing techniques.

) Online Event

During the more than three-month course, a total of 15 online events were held, including information sessions, workshops, office hours, opening ceremonies, and hackathon demo days, among other formats. The cumulative exposure of online events reached 12,429 times.

Two presentation sessions: Focus on hotspots, accurately address the issues.

1. Blockchain Beginner's Guide | Polkadot, Solidity & Smart Contracts, All in One

2. Transitioning from Web2 to Web3: The Path to Becoming a Solidity Expert

Four Workshops: Hands-on Practical Exercises

1. Hackathon: Rules Interpretation + Team Recruitment, One-Stop Competition Guide!

2. Compile Debug Secrets: The Correct Way to Efficiently Reproduce and Solve Bugs!

3. Mini DEX Development Practice: Build Your First On-Chain Application

4. Community Bug Reproduction and Solution Practice: Enhance Debugging Skills and Become a Community Contributor!

Six Office Hours: Stay on Track, Efficient Guidance

After each class, Office Hours are scheduled, which include knowledge review, homework feedback, explanation of difficult points, and interactive Q&A, helping students to identify gaps, deepen understanding, and create an effective learning loop.

Opening/Closing Ceremony + Hackathon Demo Day

In addition, the course kicked off with an opening ceremony and concluded successfully with a Hackathon Demo Day and a closing ceremony.

( Research and Development Team

This course is jointly taught and supported by 2 lecturers + 6 teaching assistants + 1 class leader.

Instructor

• Zhou Jun: Has extensive development experience in embedded systems, servers, and big data. He started exploring Ethereum in 2017 and began learning Substrate and developing open-source projects in 2019. He is currently dedicated to the research and promotion of Substrate.

• Wang Dachui: Originally a smart contract developer, now dedicated to developing blockchain infrastructure and decentralized networks, always full of interest in new technological adventures.

Teaching Assistant

• Liu Zhengyuan: A Web3 enthusiast who transitioned from the civil engineering industry, a Web3 developer starting from scratch.

• Wu Yanhui: Twelve years of development experience, including Java, Python, big data, and finance, full-stack front and back end. Started to understand and learn Web3 in August 2024.

• Yang Xinmin: Entered the blockchain industry in 2018, engaged in smart contract ) solidtity ### and backend ### golang ( development work, participated in the development of over 15 projects, holds PMP certification and Agile development coach certification.

• Liu Bo: Familiar with Rust and Go backend development, experienced in Solidity and Rust contract development, focusing on trading and the DeFi field.

• Jiang Hua: Familiar with the Polkadot tech stack, has independently developed projects such as dreamfactory and soccertoweb3, focusing on Parachain development.

• Magic: After being a coder for over ten years, I love tinkering with technology and believe that writing code can make the world a better place.

Class leader

• Emma: Urges everyone to study together, actively encourages classmates to complete each lesson's study tasks and assignments, tries to help everyone effectively address problems encountered during the learning process, and follows up on planning activities related to the course.

!["Solidity Development on Polkadot" course successfully concluded! 219 developers are gearing up for the Polkadot 2.0 era])https://img-cdn.gateio.im/webp-social/moments-c5f59aa66e39773c5a05fbd85e6bf033.webp###

Hackathon Practice: Ignite Innovation Potential

To enhance the learning effect and encourage application of knowledge, the course has specially set up a hackathon practical session, with a total prize pool of up to 2,000U, aimed at inspiring everyone to create innovative projects based on the Polkadot ecosystem.

This hackathon attracted 81 developers to actively participate, ultimately submitting 24 projects. After professional evaluation and selection, 18 projects successfully made it to Demo Day, and 15 award-winning projects were selected in the final roadshow, fully showcasing the technical strength and creativity of the participants.

The top three winning projects (

After intense competition, the top three winning projects stood out, receiving prizes of 500U, 300U, and 200U, respectively.

1. DAOLottery

A decentralized governance lottery application that combines DAO governance mechanisms with a lottery incentive system to enhance participation and interest in governance.

2. Launchpad

This is a Launchpad project based on Hardhat, used for creating and managing Token issuance projects.

3. DTrust

A data authenticity verification platform built on blockchain technology, specifically designed to address the risks of data tampering, lack of audit trust, and information silos faced by enterprises in contract management.

) Most Diligent Developer Award

Two trainees received the Most Diligent Developer award, with bonuses of 300U and 200U awarded respectively.

• 0neBlock-Academy: An online learning and rewards platform based on modern Web3 and blockchain technology, aimed at providing a one-stop solution for Web3 educational training institutions for student registration, course management, study notes, exam questions, grade evaluation, and graduation reward collection.

• NFTGame: A battle game based on the Polkadot ecosystem where users can mint emoji NFTs. Users use NFTs to battle, and the winner takes the staked tokens of the participants as loot.

( Best Developer / Best Team Award

In addition, 10 projects received the "Best Developer" and "Best Team" awards, sharing a total prize of 500U. The projects cover various cutting-edge sectors including RWA, AI, GameFi, wallets, etc., fully reflecting the students' exploration and practice of different application directions in blockchain.

!["Solidity Development on Polkadot" course successfully concluded! 219 developers gearing up for the Polkadot 2.0 new era])https://img-cdn.gateio.im/webp-social/moments-4aa767c6a1c2e7adf052e0fb2484c922.webp(

Graduates and Outstanding Students

A total of 78 students successfully graduated from this course, completing all course video learning and the "Introductory Course - Session Four" with a total of 5 Task assignments.

Among them, 51 students performed excellently, meeting the outstanding standards and completing 7 class hours.