# From Zero to GenLayer: An Introductory GenLayer Tutorial

**URL:** <https://talks.genlayer.foundation/t/from-zero-to-genlayer-an-introductory-genlayer-tutorial/21>\
**Category:** Builders\
**Tags:** mission\
**Created:** [October 8, 2025, 12:40pm UTC](https://talks.genlayer.foundation/t/from-zero-to-genlayer-an-introductory-genlayer-tutorial/21 "2025-10-08T12:40:42Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![TooRop](https://avatars.discourse-cdn.com/v4/letter/t/9e8a1a/32.png) [@TooRop](https://talks.genlayer.foundation/u/TooRop)\
**Post date:** [March 20, 2026, 9:40am UTC](https://talks.genlayer.foundation/t/from-zero-to-genlayer-an-introductory-genlayer-tutorial/21/6 "2026-03-20T09:40:23Z")

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I built **RealWorldOracle** — a trustless on-chain oracle that resolves real-world yes/no questions (sports results, news events, price checks) by fetching live web data and running an LLM jury via GenLayer’s Optimistic Democracy consensus.

No Chainlink, no trusted third party — the validators **are** the oracle.

The tutorial covers:

- Optimistic Democracy & Equivalence Principle explained with diagrams

- Writing a Python Intelligent Contract with `gl.get_webpage` + `gl.exec_prompt`

- Non-deterministic blocks with `eq_principle_strict_eq`

- Step-by-step deploy via GenLayer Studio

Repo: [https://github.com/LuanXich/genlayer-realworld-oracle](https://github.com/LuanXich/genlayer-realworld-oracle)

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_[View the full topic](https://talks.genlayer.foundation/t/from-zero-to-genlayer-an-introductory-genlayer-tutorial/21)._