Miden: Testnet faucet and playground

Miden currently provides public testnet access and tooling.

Available resources include a testnet faucet (https://faucet.testnet.miden.io/) and the Miden Playground (https://playground.miden.xyz/) for hands-on experimentation. The roadmap notes a TGE expected at the end of March. The author is still exploring the platform and plans to publish a full guide once they complete testing.

These resources make Miden a practical option for those who want to test and learn onchain tooling now.