# Calibration

{% hint style="info" %}
Also see [Calibration RPCs](/networks/calibration/rpcs.md) and [Calibration Explorers](/networks/calibration/explorers.md).
{% endhint %}

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

## Quick Start Commands

### Download Latest Snapshot

```bash
# Fast download with aria2c (recommended)
aria2c -x5 https://forest-archive.chainsafe.dev/latest/calibnet/

# Alternative: wget method
wget https://forest-archive.chainsafe.dev/latest/calibnet/
```

### Connect to Calibration Network

```bash
# Lite node (fastest startup)
FULLNODE_API_INFO=wss://wss.calibration.node.glif.io/apigw/lotus lotus daemon --lite

# Full node with snapshot import
lotus daemon --import-snapshot <calibnet-snapshot-file>

# Connect to RPC endpoint
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"Filecoin.ChainHead","params":[],"id":1}' https://api.calibration.node.glif.io/rpc/v1
```

### Get Test FIL

Quick access to faucets:

* **Chainsafe**: <https://faucet.calibnet.chainsafe-fil.io>
* **Zondax**: <https://beryx.zondax.ch/faucet/>
* **Forest**: <https://forest-explorer.chainsafe.dev/faucet/calibnet>

### Essential Network Info

* **Chain ID**: `314159` (for MetaMask/wallets)
* **RPC**: `https://api.calibration.node.glif.io/rpc/v1`
* **WebSocket**: `wss://wss.calibration.node.glif.io/apigw/lotus/rpc/v1`
* **Minimum Power**: `32 GiB`

## About Calibration

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](https://filecoinproject.slack.com/archives/C01D42NNLMS) for support.

**Maintainer**: [Protocol Labs](https://protocol.ai/)

## Genesis <a href="#genesis" id="genesis"></a>

* CAR File: `QmbHZuVjgtxvgtcE5H3FpE1ywEyawYmZcbx4Eh47WZ7YF8`
* Reset Timestamp: `1667326380` (`2022-11-01T18:13:00Z`)
* Genesis Block CID: `bafy2bzacecyaggy24wol5ruvs6qm73gjibs2l2iyhcqmvi7r7a4ph7zx3yqd4`
* SHA-1 Digest: `f9004d1266e0b023a018eb2fe6bb403cb8204df4`

## Network parameters <a href="#network-parameters" id="network-parameters"></a>

* 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 <a href="#bootstrap-peers" id="bootstrap-peers"></a>

Bootstrap peers for Calibration testnet can be found at:

`https://github.com/filecoin-project/lotus/blob/release/`**\[latest release]**`/build/bootstrap/calibnet.pi`

The latest Lotus release can be found at <https://github.com/filecoin-project/lotus/releases/latest/>

## Snapshots <a href="#snapshots" id="snapshots"></a>

* [Latest minimal snapshot](https://forest-archive.chainsafe.dev/latest/calibnet) (note, as of March 2024, this is a 3.5GB download)

## Active storage providers <a href="#active-storage-providers" id="active-storage-providers"></a>

The following storage providers are running on the Calibration testnet.

### [PiKNiK](https://github.com/benjaminh83/fvm-calib-deal-miners) <a href="#piknikhttpsgithubcombenjaminh83fvm-calib-deal-miners" id="piknikhttpsgithubcombenjaminh83fvm-calib-deal-miners"></a>

* **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](https://github.com/benjaminh83/fvm-calib-deal-miners)

## Resources <a href="#resources" id="resources"></a>

* [Calibration Faucet - Chainsafe](https://faucet.calibnet.chainsafe-fil.io)
* [Calibration Faucet - Zondax](https://beryx.zondax.ch/faucet/)
* [Calibration Faucet - Forest Explorer](https://forest-explorer.chainsafe.dev/faucet/calibnet)
* [Calibration USDFC Faucet - Chainsafe](https://forest-explorer.chainsafe.dev/faucet/calibnet_usdfc)
* [DataCap allocation](https://faucet.calibnet.chainsafe-fil.io)
* [Slack Channel for Updates: #fil-network-announcements](https://filecoinproject.slack.com/archives/C01AC6999KQ)
* [Slack Channel for Questions: #fil-help](https://filecoinproject.slack.com/archives/CEGN061C5)
* [Latest lightweight snapshot](https://forest-archive.chainsafe.dev/latest/calibnet/) generated with [Forest](http://github.com/ChainSafe/forest) by [ChainSafe](https://chainsafe.io/)
* [Complete calibration net archival data](https://forest-archive.chainsafe.dev/list/) generated with [Forest](http://github.com/ChainSafe/forest) by [ChainSafe](https://chainsafe.io/)

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