Instantiating Lucid Evolution

Lucid Evolution is a transaction building framework for Cardano which provides flexible off-chain development patterns. The library is designed with modularity in mind, allowing you to:

• Build and simulate transactions
• Work with different Cardano networks (Mainnet, Preprod, Preview, or Custom networks)
• Choose from multiple provider options for blockchain interaction

Custom network slot configuration

Non-standard networks should supply their Shelley genesis slot mapping when the Lucid instance is created. The mapping is copied and kept per instance, so different Custom networks can safely coexist in one process.

const lucid = await Lucid(provider, "Custom", {
  slotConfig: {
    zeroTime: 1710000000000, // Unix time in milliseconds at zeroSlot
    zeroSlot: 0,
    slotLength: 1000, // milliseconds
  },
});

Emulator instances derive this mapping automatically. Existing code that has initialized SLOT_CONFIG_NETWORK.Custom remains supported as a compatibility snapshot, but new Custom-network integrations should pass slotConfig directly.