Protocol-level Constants
When building dApps on Alephium, it's important to be aware of certain protocol-level constants, such as the minimum required gas and the maximum number of tokens allowed per contract. This guide compiles some of the key constants for Alephium.
| Description | Value |
|---|---|
| Maximal transactions per block | 500 |
| Minimal gas per transaction | 20000 |
| Minimal gas price per transaction | 0.0000001 ALPH |
| Minimal gas fee per transaction | 0.002 ALPH |
| Maximal gas per block | 10000000 |
| Maximal gas per transaction | 5000000 |
| Minimal ALPH per asset utxo (dust amount) | 0.001 ALPH |
| Minimal ALPH per contract utxo (contract deposit) | 0.1 ALPH |
| Maximal number of token per asset utxo | 1 |
| Maximal number of token per contract utxo | 8 |
| Maximal contract code size | 32 KB |
| Maximal contract total fields size | 3 KB |