Event Details
This cross-chain themed public lecture series is led by Whaler and co-organized by Peking University Blockchain Association, job platform Talentre, cross-chain infrastructure project Map Protocol, and blockchain media ChainB. The lectures will be held every Saturday (popular science) and Sunday (project-focused), combining theory with practical case studies to address real-world business needs, focusing on career development, and creating the highest quality and most comprehensive cross-chain public course through community collaboration. This event has received collaborative support from over 50 partners including university blockchain associations, blockchain media, projects, institutions, and DAOs & communities.
The full course spans 10 weeks with 20 sessions, launching every Saturday and Sunday at 16:00 (UTC+8). Lectures will be live-streamed simultaneously on Bilibili and YouTube. The program includes lectures, self-assessment quizzes, product interaction, and full job-seeking processes. All courses are free and open to anyone interested in cross-chain technology and the cross-chain ecosystem.

Cross-Chain Public Course #001 June 3, 16:00 (UTC+8)
Topic: What is Cross-Chain? Introduction and Analytical Framework
Content: Functions, types, classifications, and analytical framework of cross-chain
YouTube Live Link:
https://youtube.com/live/UXSX3DU50pE?feature=share
Bilibili Live Link:
http://live.bilibili.com/27945281

Cross-Chain Public Course #002 June 4, 16:00 (UTC+8)
Case Study: BOOL Network
Content: The Impossible Triangle of Cross-Chain and User Experience, Building Applications and Expanding Based on BOOL
YouTube Live Link:
https://youtube.com/live/UXSX3DU50pE?feature=share
Bilibili Live Link:
http://live.bilibili.com/27945281

Cross-Chain Public Course#003 Cross-Chain Technical Solutions
Speaker: JayLin
Content: Native Verification, On-Chain Verification, External Validation, Shared Validation
Course Introduction:
This public lecture will guide you through an in-depth exploration of cross-chain technology, discussing its fundamental principles and mechanisms. You'll learn about the concepts and designs of cross-chain protocols and how they enable information and value transfer between different blockchains. We will also introduce several popular cross-chain solutions and discuss their advantages and challenges in real-world applications. You’ll gain key knowledge on building cross-chain applications and platforms, as well as insights into how cross-chain technology can drive the evolution of the blockchain industry.
YouTube Link:
https://youtube.com/live/v4D-GGOMMPQ?feature=share
Bilibili Link:
http://live.bilibili.com/27945281

Cross-Chain Public Course#007 Light Node Special Topic
Speaker: MiddleX
Content: Principles, Optimization, Scalability, Case Analysis
Course Introduction:
As a key direction in blockchain technology, cross-chain enables interoperability between different blockchain networks, and light nodes are one of the critical technologies enabling this interoperability. In this live session, we will explain in detail how light nodes work—how they achieve data interaction and verification across chains without requiring full blockchain data. We’ll also share real-world application cases of cross-chain light nodes in finance, supply chain, IoT, and other fields, demonstrating the vast potential of this technology. Whether you’re a beginner or a blockchain expert, this session will deliver valuable insights. Thank you for watching!
YouTube Link:
https://youtube.com/live/ON0MOaTda0s?feature=share
Bilibili Link:
http://live.bilibili.com/27945281

Cross-Chain Public Course#008 Cosmos IBC – "Overview and Outlook of the Inter-Blockchain Communication Protocol"
Speaker: Uncle Hongjun
Course Introduction:
As a rising star in cross-chain technology, Cosmos IBC is attracting global attention within the blockchain community thanks to its unique design and functionality. In this live session, our speaker will thoroughly explain how Cosmos IBC achieves secure and reliable cross-chain communication and asset transfers using the Inter-Blockchain Communication Protocol (IBC), along with use cases in decentralized applications and financial services, showcasing the immense real-world potential of this technology.
Thank you for tuning in—let’s dive into this exciting technical deep-dive on Cosmos IBC!
YouTube Link:
https://youtube.com/live/8YYak9qgu10?feature=share
Bilibili Link:
http://live.bilibili.com/27945281
Registration Link:
https://docs.qq.com/form/page/DWXRab0dBS3RFTUhJ#/fill
#011 Message Passing Across Chains

Time: July 15, 16:00 (UTC+8)
Speaker: MiddleX
Content: Message Transmission, Message Channels, Message Formats, Message Trees
Course Introduction:
Message passing across chains is seen as a crucial link connecting different blockchain networks, offering innovative solutions for multi-chain interoperability and data sharing. This week’s cross-chain public lecture will analyze this important and challenging topic from the message layer, comprehensively explaining message passing across chains from four dimensions: message transmission, message channels, message formats, and message trees. We’ll gradually delve into the core concepts and principles of message-based cross-chain technology. You are sincerely invited to join our upcoming public course—come prepared with questions and ideas. We look forward to interacting with you!
YouTube Link:
https://youtube.com/live/lpk01ZCyV8M?feature=share
Bilibili Link:
http://live.bilibili.com/27945281
Tencent Meeting Link (Meeting ID: 129-682-700):
https://meeting.tencent.com/dm/FE3vd8011Tab
#012 AXELAR Turing-complete calls and messages

Time: July 16, 10:00 (UTC+8)
Speaker: Sergey Gorbunov
Course Introduction:
Axelar is a blockchain interoperability platform designed to connect different blockchain networks and enable seamless communication and transfer of assets across them. It aims to address the issue of blockchain fragmentation by providing a decentralized network that acts as a bridge between different blockchains. Axelar's vision is to create a seamless and interconnected blockchain ecosystem where different networks can communicate and collaborate, fostering innovation and expanding the capabilities of blockchain technology. Welcome to the WhalerDAO’s Cross-Chain Public Courses on Sunday. We are honored to have invited Sergey Gorbunov, the CEO of Axelar, to give a special sharing and look forward to your interaction!
Registration Link:
https://docs.qq.com/form/page/DWXRab0dBS3RFTUhJ#/fill
YouTube Link:
https://youtube.com/live/mEoBbTszPEo?feature=share
Bilibili Link:
http://live.bilibili.com/27945281
ZOOM Meeting Link (Meeting ID: 820 5044 9276 Passcode: 0716):
https://us06web.zoom.us/u/kbgrwGZX
#015 How to Implement Light Clients Across Multiple Chains

Time: 7.29 16:00 (UTC+8)
Speaker: Phil
Content: Principles, Development, and Applications of Light Clients
Course Introduction:
Whaler’s cross-chain public lecture series is now entering its final stage. This session will feature Phil, CTO of Map Protocol, who will provide hands-on instruction on implementing light clients across multiple chains. A cross-chain light client is a tool used to access multiple blockchain networks, allowing retrieval of blockchain data by connecting to other nodes without running a full node. Once successfully deployed and connected to target blockchains, projects can interact with other chains via the client interface—including querying blocks and sending transactions. We look forward to your participation—welcome to Week 8 of Whaler’s Cross-Chain Public Course, the hands-on module!
YouTube Live Link:
https://youtube.com/live/K-PzrHZ51Eo?feature=share
Bilibili Live Link:
http://live.bilibili.com/27945281
Tencent Meeting Live Link (Meeting ID: 354-311-898)
https://meeting.tencent.com/dm/rDIFTeXyO0Qk
#016 Kava: COSMOS and EVM

Time & Date: 7.30 10:00 (UTC+8)
Speaker: Karmel Elshinnawi
Introduction:
Kava is a secure, lightning-fast Layer-1 blockchain that combines the developer power of Ethereum with the speed and interoperability of Cosmos in a single, scalable network. Committed to fostering innovation and growth, Kava is a trusted choice for developers and users worldwide. Welcome to the WhalerDAO’s Cross-Chain Public Workshop on Sunday. We are honored to have invited Karmel Elshinnawi, the Product Lead of Kava, to give a special sharing. Karmel will discuss the following topics: 1. Kava Overview: COSMOS and EVM 2. Latest updates/releases/launches 3. How users can interact with our chain 4. Future outlook 5. Highlights of the Surge Campaign. Looking forward to your interaction!
YouTube: https://youtube.com/live/fXXRDEk8Uow?feature=share
Bilibili: http://live.bilibili.com/27945281
ZOOM (Meeting ID: 874 7896 2522 Passcode: 0000):
https://us06web.zoom.us/j/87478962522?pwd=SFZxMWMxbjVNaWJNYWU1UWhzcHNNUT09
#019 Current State and Outlook of the Cross-Chain Sector

Time: 8.12 16:00 (UTC+8)
Speakers: Loners Pengpeng, Master Cuimian, MiddleX, KunTai JamesXYC, JayLin
Content: Cross-chain sector, cross-chain technology, cross-chain applications, future outlook for cross-chain
Course Introduction:
Whaler’s cross-chain public lecture series has finally reached its concluding session. For this final roundtable discussion, we’ve re-invited previous lecturers and distinguished guests. We’ll focus on the cross-chain landscape and future prospects, summarizing and reflecting on the evolution of cross-chain technology, exploring the future path of the cross-chain sector, and discussing where cross-chain stands from a regulatory compliance perspective. We are honored to have Loners from ChainB VC moderating, joined by Master Cuimian (founder of Whaler Community), KunTai (core member of Map Protocol), and lead instructors Jaylin and MiddleX. We look forward to their insightful perspectives—welcome to the final episode of Whaler’s Cross-Chain Public Course. See you there!
YouTube Live Link:
https://youtube.com/live/kGD-hB8X7MU?feature=share
Bilibili Live Link:
http://live.bilibili.com/27945281
Tencent Meeting Live Link (Meeting ID: 131-926-281):
https://meeting.tencent.com/dm/E9mxUOSGmxMG
#020 Chainlink CCIP: Cross-Chain Service & Demo

Time: 8.13 16:00 (UTC+8)
Speaker: Frank
Content: Oracle Challenges, Chainlink Data & Computing Services, Chainlink Cross-Chain Services, Cross-Chain Service Demo
Course Introduction:
Industry-leading Web3 service platform Chainlink will participate in Whaler’s cross-chain public lecture series on August 13 at 16:00 Beijing time. Frank, Head of the APAC Developer Community at Chainlink Labs, will introduce Chainlink’s Cross-Chain Interoperability Protocol (CCIP) during the live session and demonstrate through use cases how CCIP helps developers build cross-chain applications and solve existing interoperability challenges. Currently, Chainlink’s Cross-Chain Interoperability Protocol (CCIP) has officially launched on Avalanche, Ethereum, Optimism, and Polygon, entering the mainnet early access phase. CCIP opened to all developers on five testnets on July 20, including Arbitrum Goerli, Avalanche Fuji, Ethereum Sepolia, Optimism Goerli, and Polygon Mumbai.,We welcome you to follow Frank and deploy on the testnet!
Youtube Live Link:
https://youtube.com/live/y0SLdL_jlz4?feature=share
Bilibili Live Link:
http://live.bilibili.com/27945281
Tencent Meeting (#Meeting ID: 239-773-291):





