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Enter your Blockfrost Preview API key to connect.
🧪 Preview Network Only
Get a free key at blockfrost.io → Create Project → Select "Preview"
Preview Testnet uses Blockfrost Preview API only.
Koios does not support testnets.
Testing Ground for Scrolls
A viewer for preview testnet scrolls on Cardano Preview network. These are proof-of-concept scrolls for testing before mainnet deployment.
Koios API only supports mainnet. For testnet access, we use Blockfrost Preview API which requires a free API key.