| Bitcoin Cash · BCH | Dec.10, 2025 - Feb.26, 2026 (Extended) |
| | Starknet · Bitcoin · Ethereum · Cairo · ZK-rollups | Feb.1 - 28, 2026 |
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| AWS Prompt the Planet Challenge |
Amazon Web Services | Feb.28 - May.31, 2026 |
| | Somnia Reactivity Mini Hackathon |
Somnia | Feb.25 - Mar.20, 2026 |
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| Polkadot Solidity Hackathon 2026 |
Polkadot · Solidity | Mar.1 - 20, 2026 |
| | BUIDL BATTLE #2 | The Bitcoin Builders Tournament |
Stacks | Mar.2 - 20, 2026 |
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| StableHacks: Build Infra on Solana |
Solana, Tenity | Mar.13 - 22, 2026 |
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| Stellar | Feb.9 - 23, 2026 |
| | Build on Stellar Chile Ideatón |
Stellar | Feb.10 - 28, 2026 (Extended) |
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| Ethereum · Base · Arbitrum | Jan.20 - Feb.28, 2026 |
| | Bitcoin · Ethereum | Feb.9 - 23, 2026 |
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| The Self-Driving Yield Engine |
BNB Chain | Feb.1 - 28, 2026 (Extended) |
| | Creditcoin · CTC · EVM | Feb.1 - Mar.7, 2026 |
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