# Arbitrum launches $115K Buildathon, reserving a podium spot for Robinhood Chain builders

In Brief: On Sept. 14 Arbitrum kicked off a three-week online Buildathon, the opening phase of Open House Singapore, dangling $115K in prizes and grants until Oct. 4. Anyone who wins is guaranteed a seat at Founder House in Singapore on Oct. 23-25, an event with another $300K attached. Combined acro

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| Published | 14 September 2026 |

Source: https://egamers.io/arbitrum-launches-115k-buildathon-reserving-a-podium-spot-for-robinhood-chain-builders/