Arbitrum Open House São Paulo: Online Buildathon

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What you'll build

Arbitrum Foundation lists Arbitrum Open House São Paulo: Online Buildathon for builders working on web3, hackquest. $115K prize value listed at the source (may include cash, credits and in-kind rewards). Source deadline: Mon, 1 Mar 2027 (date only; confirm cutoff at source). Check the host rules before submitting.

Why it's on the index

• $115K prize value listed at the source (may include cash, credits and in-kind rewards).
• Source deadline: Mon, 1 Mar 2027 (date only; confirm cutoff at source).
• Host rules and application details remain authoritative.

< source-linked listing · register at source · index record 3 Nov 2026 >

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