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Hackathon Winner Tech Stacks Decoded

Stop guessing what judges actually reward. Study the exact architecture decisions, trade-offs, and implementation patterns from projects that beat 100+ competitors, skip the trial-and-error.

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Why This Choice Wins A DeFi oracle aggregator beat 100+ projects by storing only the latest 10 price points on-chain instead of unlimited history. One decision: circular buffer with a pointer index. Result: reduced storage writes from O(n) to O(1), cutting gas costs by 73% per update. Judges saw this and understood the architect wasn't just coding, they were designing for cost efficiency and query patterns upfront.

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