The calibration network is the most realistic testnet simulation of the Filecoin mainnet.

Prospective storage providers can experience more realistic sealing performance and hardware requirements using final proofs constructions and parameters. Storage clients can store and retrieve real data on the network. Clients can also participate in deal-making workflows and storage and retrieval functionality. The sector size on the Calibration testnet is the same as on the Filecoin mainnet; 32 GiB and 64 GiB sectors are supported. This testnet also includes the Filecoin EVM-runtime features found on the Filecoin mainnet.

Developers can reference pre-existing deals that are already available on the network. See the #fil-net-calibration-discuss channel in the Filecoin Slack for support.

Maintainer: Protocol Labs


  • CAR File: QmbHZuVjgtxvgtcE5H3FpE1ywEyawYmZcbx4Eh47WZ7YF8

  • Reset Timestamp: 1667326380 (2022-11-01T18:13:00Z)

  • Genesis Block CID: bafy2bzacecyaggy24wol5ruvs6qm73gjibs2l2iyhcqmvi7r7a4ph7zx3yqd4

  • SHA-1 Digest: f9004d1266e0b023a018eb2fe6bb403cb8204df4

Network parameters

  • Supported Sector Sizes: 32 GiB and 64 GiB

  • Consensus Miner Min Power: 32 GiB

  • Epoch Duration Seconds: 30

  • Expected Leaders per Epoch: 5

  • WindowPoSt Proving Period: 2880

  • WindowPoSt Challenge Window: 60

  • WindowPoSt Period Deadlines: 48

  • Pre-Commit Challenge Delay: 150

Bootstrap peers

Bootstrap peers for Calibration testnet can be found at:[latest release]/build/bootstrap/calibnet.pi

The latest Lotus release can be found at


Active storage providers

The following storage providers are running on the Calibration testnet.

  • t017840: Every deal accepted by this SP will be aggregated into 32 GiB sectors, which is the minimum size for calibration network. This miner has a preset sealing capacity of 2x 32 GiB sectors per day, defined as sectors in waitdeals will be flushed every 12 hours. More information


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