Web3 Knowledge Hub

A structured guide to Web3 and blockchain, from fundamentals to implementation: RWA (real-world asset) tokenization, how DeFi (decentralized finance) works, DID (decentralized identity), enterprise NFT use cases, and tokenomics design. We organize the knowledge needed for Web3 adoption decisions and implementation, from the perspective of a company that builds these systems itself.

The articles are structured so you can work through internal discussion as you read — from the first question, "what is Web3" and "do we really need blockchain," through PoC design, production implementation, and operations.

Hands-on technical write-ups from our engineering work are published on our Tech Blog; talks, events, and other activity reports are on our blog. Both are currently Japanese-only.

Popular articles

• RWA: what it is and how companies tokenize real-world assets — fractional ownership of real estate, bonds, and art, and Japan's STO regulation (Popular)
• How to choose a Web3 consulting firm — five points to avoid a bad hire and typical cost ranges (For those considering adoption)
• What is DID (decentralized identity)? — the W3C standard, four use cases, and the technology stack (Introductory guide)

Web3 fundamentals

• What is implementation-led business development? — how it differs from the conventional approach, and how to practice it
• Why we advocate implementation-led business development — Netsujo's thinking (philosophy)
• Speeding up PoCs at large enterprises — moving small and fast by reusing existing assets
• Starting manufacturing DX with a small PoC — integrating with existing systems and involving the shop floor
• How to choose a PoC development company — differences between vendor types and five selection criteria
• Do you really need Web3? — five criteria for the adoption decision
• How to choose a Web3 consulting firm — five points to avoid a bad hire
• How to run a PoC and what it costs — explained in five steps
• Choosing a blockchain — Ethereum, Cosmos, Symbol
• Web3 requirements definition — a 10-item checklist

Development & technology

• How to choose a Web3 development company — comparing contractors and a pre-engagement checklist
• Offshore development in Vietnam — contract types, choosing a partner, and things to watch for
• The cost of blockchain development — typical ranges across four phases
• Smart contract audits — methods, how to choose an auditor, and cost
• Smart contract design — the basics of security-first development
• Designing a token economy — four elements and common patterns

Finance & assets

• How DeFi works and how companies use it — the basics of decentralized finance
• 10 DeFi hacking cases — classifying attack methods and how to prevent a repeat
• The basics of RWA tokenization — digitizing real-world assets
• Japan's STO regulation and outlook — the legal status of security tokens

Use cases & trends

• 5 enterprise NFT use cases — adoption benefits and implementation points
• How DID works and how it is used — from the basics of decentralized identity to development
• AI × blockchain — five transformations for enterprises
• A guide to government × Web3 — how to run a pilot project
• Web3 market trends 2026 — enterprise adoption trends and areas to watch

Columns & commentary

• Where the essential value of Web3 and blockchain lies — trust cost, decentralization, DePIN, and the connection to YaseiGrid
• What is DePIN? — the Web3 infrastructure business Netsujo is pursuing with YaseiGrid, and where domestic and international DePIN activity stands
• How we are approaching DePIN — the current state of YaseiGrid R&D, disclosed honestly at the concept and proof-of-concept-preparation stage
• Five issues we mapped out after a local-government inquiry about "tourism × Web3" — brainstorming case #03
• The exit criteria you should set before starting a PoC — issues mapped out in a 30-minute session, case #02
• Three design decisions to settle before using an NFT as a "certificate" — brainstorming case #01
• Five common reasons companies get stuck at the PoC stage — an analysis of five patterns and how to avoid them
• Common misunderstandings about Web3 — points worth checking before adoption

Learning paths by goal

If you are not sure where to start, follow one of these three-step paths based on your goal.

Considering Web3 adoption

Start with "Do you really need Web3?" → then "How to run a PoC and what it costs" → then go deeper with "The cost of blockchain development."

Interested in DeFi and RWA

Start with "How DeFi works" → then "RWA tokenization" → then go deeper with "Japan's STO regulation."

Ready to start building

Start with "Choosing a blockchain" → then "Smart contract design" → then go deeper with "How to run a smart contract audit."

Guides & checklists

Practical resources you can use for internal review and pre-engagement checks — no membership required, and all are printable.

• Web3 adoption decision and vendor-selection checklist — 50 items, roughly 12 A4 pages, from the concept stage through RFP drafting
• Web3 PoC design template — 7 elements, roughly 14 A4 pages, so a PoC does not end as just a PoC
• Smart contract pre-procurement security checklist — 40 items, roughly 16 A4 pages, covering design, tokenomics, infrastructure, and audit

Netsujo Lab is our technical research layer, where we publish research hypotheses, reference designs, and failure conditions on Web3, AI, and distributed systems.

Ready to talk?

It is fine to reach out while your idea is still unshaped — we will help structure the problem from there.