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HOR-12 · Tech Horizons · Living entry

Learn Web3 & Decentralised Systems with any AI

Trust without a middleman

Web3 is the attempt to rebuild parts of the internet on decentralised foundations — blockchains, tokens and smart contracts — so that trust need not depend on a central authority. It is genuinely divisive, and this node deliberately gives the critics equal time, because much of the space has been hype and worse.

Approach it with curiosity and a healthy dose of scepticism. Set your level below.

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§01

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HOR-12 · Web3 & Decentralised Systems
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§02

A map of Web3

Trust without a middleman

The pieces of the decentralised vision.

  • Blockchain fundamentals — the shared, tamper-resistant ledger at the core.
  • Smart contracts — code that executes agreements automatically.
  • Digital assets & CBDCs — cryptocurrencies, tokens and central-bank digital money.
  • Decentralised identity — controlling your own credentials.
  • Critiques & risks — given real weight here, not treated as an afterthought.
§03

The canon

The ideas behind the technology

Real foundations.

  • Public-key cryptography — the older maths that makes any of it possible.
  • The Bitcoin whitepaper (2008) — Satoshi Nakamoto's design for decentralised digital cash.
  • The blockchain — the core idea of a distributed, append-only ledger.
  • Smart contracts — the term coined by Nick Szabo, later realised on platforms like Ethereum.
  • Decentralised consensus — the mechanisms by which strangers agree without a central authority.
§04

The live debates

The debates — with the critics heard

Real, sharp disagreements.

  • Does decentralisation actually deliver? Or does it quietly recreate the middlemen it promised to remove?
  • Environmental cost. The heavy energy use of some ("proof-of-work") systems.
  • Useful, or mostly speculation and fraud? An honest question given the sector's record.
  • CBDCs. Convenient digital money, or a tool for surveillance and control?
  • Regulation. How to protect people without strangling genuine innovation.
§05

Where to start

A route in

A route in — everything runs from the panel above.

  1. Run Orientation on "what a blockchain actually is" — the tech beneath the noise.
  2. Use Great Debates on whether decentralisation delivers on its promises.
  3. Connect to Cybersecurity and Economics.
  4. Read both the advocates and the sharpest critics — this field needs both.

Separate the technology from the speculation: the ideas are interesting; the market has been a minefield.