On 30 July 2015, the Ethereum mainnet went live with the mining of its genesis block. In 2026, Ethereum turns 11, eleven years of a network that started as an experiment and grew into the base layer for a global builder economy.

To mark that, this initiative runs 11 weeks of Build Battles, each week spotlighting a different piece of what Ethereum has become: identity, payments, AI, gaming, privacy, public goods, storage, and culture. The series closes on 31 October 2026, three days before the global community gathers again at Devcon 8 in Mumbai (3–6 Nov 2026), turning eleven years of history into eleven weeks of building, right on India's own doorstep.

Overview

• Format: 48-hours Virtual Build Battles, every weekend, for 11 consecutive weeks
• Window: Friday 11:11 PM → Sunday 11:11 PM
• Start: 22 August 2026 · End: 31 October 2026

Marketing Cadence

How it works:

Build Battles is a competitive, hands-on arena hosted on Loops House, a solo-builder participation platform where each builder can use AI agents to build on Ethereum against a given problem statement, using the tech stack related to that week's Problem Statement.

• Weekly Problem Statements: Every week, 3 distinct problem statements are released, each tied to the tech stack of a specific Ethereum topic. The builder submits 3 different Github repos as part of submission.
• Solo & AI-Native Building: Builders participate individually, leveraging their own custom AI agents to build full-stack dApps on Ethereum.
• LeetCode-Style Execution: Think LeetCode or Codeforces, but for full dApps instead of DSA questions: builders build complete, working applications, and submissions are evaluated against test cases rather than judged subjectively. Build Battles automatically evaluates entire dApp submissions, testing smart contract logic, RPC calls, and front-end integration.
• Submissions & Leaderboards: Builders submit one dedicated GitHub repository per problem statement. Every submission generates a detailed evaluation report alongside a live, verifiable leaderboard.

Full Schedule

Week-by-Week Detail

Each toggle below has the tech research, India-context problem statements for that weekend.

Week 1 · Reading Ethereum