Mammoth testnet ​

The Mammoth testnet is designed to demonstrate Celestia's high throughput capabilities with a larger validator set that closely mirrors real network conditions. This testnet will allow teams to stress test the network and verify our scaling capabilities. Read more about mamo-1 in the blog post.

Overview ​

Chain details ​

The Mammoth testnet runs across 3 regions (Paris, Warsaw, Amsterdam) with 7 validators and 2 bridge nodes in each region (21 validators & 6 bridge nodes total). It includes an archival node to assist bridge nodes in network synchronization.

Block explorer ​

Explorer for Mammoth testnet is available at mammoth.celenium.io

Software versions ​

The testnet includes custom versions with:

• Datastore sharding
• 1-day sampling and pruning window
• Optimized block time consistency
• Maximum transaction size of 32MB, specifically where max_tx_bytes: 33554400

RPC Endpoints ​

Status: https://rpc.ams.mamochain.com/status

Post data to Mammoth testnet ​

Set up your light node ​

Install celestia-node version v0.21.9-mammoth-v0.0.16, by using this quick install command:

# quick install
bash -c "$(curl -sL https://docs.celestia.org/celestia-node.sh)" -- -v v0.21.9-mammoth-v0.0.16

# quick install
bash -c "$(curl -sL https://docs.celestia.org/celestia-node.sh)" -- -v v0.21.9-mammoth-v0.0.16

If you'd like to build from source, checkout to v0.21.9-mammoth-v0.0.16 and run the commands from the celestia-node page.

Once installed, initialize your node:

celestia light init --p2p.network mammoth

celestia light init --p2p.network mammoth

Start your light node with state access (with a consensus endpoint):

celestia light start --p2p.network mammoth --core.ip global.grpc.mamochain.com --core.port 9090 --rpc.skip-auth

celestia light start --p2p.network mammoth --core.ip global.grpc.mamochain.com --core.port 9090 --rpc.skip-auth

Find your account address:

celestia state account-address

celestia state account-address

Visit the faucet ​

Head to the faucet at mammoth.celenium.io/faucet to request tokens for the Mammoth testnet.

Check your balance:

celestia state balance

celestia state balance

Post your first blob ​

Send the blob ​

Use the CLI to post your first blob.

celestia blob submit 676d 676d

celestia blob submit 676d 676d

Where the response will look similar to:

{
  "result": {
    "height": 39651,
    "commitments": [
      "0xb4774f791439fb1c09ee293812bf7dc7cfc75f20c49dd16d061459dc8f5febff"
    ]
  }
}

{
  "result": {
    "height": 39651,
    "commitments": [
      "0xb4774f791439fb1c09ee293812bf7dc7cfc75f20c49dd16d061459dc8f5febff"
    ]
  }
}

Retrieve the blob ​

Retrieve your blob with the data from the response from your submission:

# example
# celestia blob get <height> <namespace> <commitment>
celestia blob get 5235704 0x676d 0xb4774f791439fb1c09ee293812bf7dc7cfc75f20c49dd16d061459dc8f5febff

# example
# celestia blob get <height> <namespace> <commitment>
celestia blob get 5235704 0x676d 0xb4774f791439fb1c09ee293812bf7dc7cfc75f20c49dd16d061459dc8f5febff

Your result should look similar to:

{
  "result": {
    "namespace": "0x676d",
    "data": "0x676d",
    "share_version": 0,
    "commitment": "0xb4774f791439fb1c09ee293812bf7dc7cfc75f20c49dd16d061459dc8f5febff",
    "index": 9
  }
}

{
  "result": {
    "namespace": "0x676d",
    "data": "0x676d",
    "share_version": 0,
    "commitment": "0xb4774f791439fb1c09ee293812bf7dc7cfc75f20c49dd16d061459dc8f5febff",
    "index": 9
  }
}

Optional: Post and retrieve the blob in one command ​

This command will post and retrieve the blob immediately:

celestia blob submit 676d 676d | tee /dev/tty | jq -r '"\(.result.height) 676d \(.result.commitments[0])"' | xargs -n3 celestia blob get

celestia blob submit 676d 676d | tee /dev/tty | jq -r '"\(.result.height) 676d \(.result.commitments[0])"' | xargs -n3 celestia blob get

Optional: Post a blob with a frontend ​

Head to gmamo.vercel.app to explore an interactive UI that offers several features:

• View your node information and transfer TIA
• Monitor sampling statistics
• Upload and retrieve blobs or images
• Create encrypted database rollups

See your node's info ​

The dashboard tab provides a comprehensive view of your node's information and allows you to send TIA to other addresses:

See your node's sampling stats ​

Monitor your light node's performance and sampling statistics in real-time:

Upload and retrieve blob or image to Mammoth ​

Use the blob management interface to upload and retrieve data, supporting images up to 32 MB:

Here's what the process looks like in action:

When uploading an image:

When retrieving an image:

Create a private database rollup ​

Create and manage your own encrypted database rollup with a custom schema. Your encryption key is securely stored in your browser's local storage for private access:

After setting up your database, you can add entries according to your defined schema: