All posts in the Crypto & Blockchain category

A practical guide sharing 7 tips for using AI (like Claude.ai and ChatGPT) to better understand whitepapers and technical documents of blockchain projects. From requesting simple summaries, explain-like-I'm-a-kid explanations, clarifying questions, using examples, creating hypothetical scenarios, converting terminology, to comparing multiple sources - helping investors make smarter crypto investment decisions.
![[Guest Post] Step into the Blockchain World: A Complete Guide to Building a dApp](/_next/image?url=https%3A%2F%2Fres.cloudinary.com%2Fkhoanguyen1505%2Fimage%2Fupload%2Fv1751208755%2Fkhoa_blog%2FGuest_Post_B%25C6%25B0%25E1%25BB%259Bc_v%25C3%25A0o_th%25E1%25BA%25BF_gi%25E1%25BB%259Bi_blockchain_H%25C6%25B0%25E1%25BB%259Bng_d%25E1%25BA%25ABn_%2F8a0c602d-1e79-4ae3-a446-9c86bfb7c239_300x284.png.jpg&w=3840&q=75)
A guest post from Hoang BA - a blockchain business analyst with over 2 years of experience in DEX, User Identity, and Token Swap projects. The author shares a comprehensive process for building decentralized applications (dApps) on blockchain, from technology selection, smart contract development to interface design and product deployment.
![[Case Study] Earning Thousands of Dollars from Blockchain Grants](/_next/image?url=https%3A%2F%2Fres.cloudinary.com%2Fkhoanguyen1505%2Fimage%2Fupload%2Fv1751208829%2Fkhoa_blog%2FCase_Study_Ki%25E1%25BA%25BFm_ng%25C3%25A0n_%25C4%2591%25C3%25B4_t%25E1%25BB%25AB_tham_gia_Blockchain_Gra%2F9a1da216-432c-4bdc-8de2-93103e607dbf_750x422.png.jpg&w=3840&q=75)
Discover how to earn income from blockchain grant programs. This post explains what blockchain grants are, why blockchain projects need them, and shares real experience from someone who successfully participated in these programs. A practical guide for developers wanting to leverage opportunities in the cryptocurrency market.

An overview of crypto staking - a method of earning passive income in the cryptocurrency market. I analyze how staking works, compare it to bank savings deposits, pros and cons, popular staking options like Ethereum and Solana, and choosing between centralized exchanges or decentralized staking.

Introducing a smart contract programming course with the Clarity language on Stacks blockchain. The course includes chapters on Stacks blockchain overview, programming a donation smart contract, creating tokens and NFTs, and deploying smart contracts. Suitable for those wanting to learn about blockchain technology built on Bitcoin.
![[Case Study] Traveling While Working - Earned $4250 in 80 Hours](/_next/image?url=https%3A%2F%2Fres.cloudinary.com%2Fkhoanguyen1505%2Fimage%2Fupload%2Fv1751208916%2Fkhoa_blog%2FCase_Study_V%25E1%25BB%25ABa_%25C4%2591i_du_l%25E1%25BB%258Bch_v%25E1%25BB%25ABa_l%25C3%25A0m_vi%25E1%25BB%2587c_ki%25E1%25BA%25BFm_4250_t%2F114e3cbb-4dae-4e41-aa63-f5742df3ce07_2240x1260.png.jpg&w=3840&q=75)
Real experience of remote working combined with backpacker-style travel across Southeast Asia. This post shares details on utilizing dead time to work effectively, participating in blockchain competitions to earn extra income, and practical lessons on work-travel balance without an ideal work environment.

Sharing about the IreneDAO NFT phenomenon by Irene Zhao - from free minting to skyrocketing to 3 ETH (around $8,000) in just two days, plus lessons about the advantages of good looks and the potential of NFTs in the crypto market.

A frank perspective on the success of Axie and Coin98 - two Vietnamese blockchain projects that raised millions of dollars and built extensive ecosystems. This article counters negative opinions and properly values these pioneers.

Discovering the journey of investing in Blockstack from a personal perspective, from participating in the App Mining program to analyzing the technology and potential of the project. This post shares real experiences building DApps and deep insights about this blockchain platform.
![[Case Study] Building a DApp for Saving Highlights More Conveniently](/_next/image?url=https%3A%2F%2Fres.cloudinary.com%2Fkhoanguyen1505%2Fimage%2Fupload%2Fv1751209392%2Fkhoa_blog%2FCase_Study_X%25C3%25A2y_d%25E1%25BB%25B1ng_DApp_l%25C6%25B0u_highlights_m%25E1%25BB%2599t_c%25C3%25A1ch_t%2Fdde22654-dd7d-450e-9e4c-37073a35f20f_2000x803.png.jpg&w=3840&q=75)
The journey of developing EmboldenIT - a blockchain app for storing and sharing highlights from web content. This post shares the process from idea to implementation, technical challenges building a DApp on Blockstack platform, and designing user experience with a Chrome extension to optimize saving important content.

This article presents the MVP of our blockchain-based electronic invoice solution in detail, including the workflow, two main applications (Admin App and Client App), implementation approach, and an actual demo with screenshots. This solution helps companies manage invoices more efficiently and transparently using blockchain technology.

This article analyzes the current situation and proposes a blockchain solution for the electronic invoice system in Vietnam. I present details about legal regulations, current implementation models, limitations of traditional systems, and propose a comprehensive solution using blockchain technology to address the issues.

Sharing my perspective on Bitcoin and blockchain, based on books by Andreas M. Antonopoulos. I suggest that instead of just investing in cryptocurrency, those without much capital can learn blockchain programming to get into this field, as it's technology with the potential to change financial systems and governments in the future.