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Important: If you're encountering any problem declaring contracts, please read the Blake Hash Support information.

Blake Hash Support

Starting from Starknet version 0.14.1, the network switched from Poseidon hash to Blake hash for compiled class hashes.

Starknet Foundry version 0.53.0 and later includes support for Blake hash, ensuring compatibility with the new Starknet version.

Common Issue: Mismatch Compiled Class Hash

If you encounter a Mismatch compiled class hash error, it likely means you're using an older version of Starknet Foundry that doesn't support Blake hash.

Solution: Upgrade to Starknet Foundry version 0.53.0 or later:

asdf install starknet-foundry latest

asdf set --home starknet-foundry latest

This will update your installation to the latest version with Blake hash support.

📝 Note

For more detailed installation instructions, see the Installation guide.