Mint node

It currently supports Optimism’s open-source OP Stack.

This repository contains the relevant Docker builds to run your own RPC node for Mint Blockchain.

Software requirements

• Docker
• Python 3

Hardware requirements

We recommend you have this configuration to run a node:

• at least 2 Core * 8 GB RAM
• an SSD drive with at least 200 GB free

Usage

1. ensure you have an Ethereum L1 full node RPC available:

• setting OP_NODE_L1_ETH_RPC. If running your own L1 node, it needs to be fully synced.
• You also need a Beacon API RPC which can be set in OP_NODE_L1_ETH_RPC.

Example:

# .env file
OP_NODE_L1_ETH_RPC=https://eth-mainnet.g.alchemy.com/v2/<your key>
OP_NODE_L1_BEACON=<beacon api rpc>

2. Start the node

• for Mint Mainnet

docker compose -f docker-compose-mainnet.yml up --build

• for Mint Sepolia

docker compose -f docker-compose-testnet-sepolia.yml up --build

3. Test your node:

curl -d '{"id":0,"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["latest",false]}' -H "Content-Type: application/json" http://localhost:8545

Note

1. Some L1 nodes (e.g. Erigon) do not support fetching storage proofs. You can work around this by specifying --l1.trustrpc when starting op-node (add it in op-node-entrypoint and rebuild the docker image with docker compose build.) Do not do this unless you fully trust the L1 node provider.

2. You can map a local data directory for op-geth by adding a volume mapping to docker-compose-xxx.yml:

services:
  geth: # this is Optimism's geth client
    ...
    volumes:
      - ./geth-data:/data

3. By default, the node type is Archive. you can change the type of node via modify the value of --gcmode in the op-geth-entrypoint file.

# for full node
--gcmode=full

Snapshots

Download latest snapshot from Mint

• Mainnet

  • Archive https://storage.googleapis.com/mint-snapshot/mint-mainnet-archive-snapshot-20241226.tar.zst
  • Full https://storage.googleapis.com/mint-snapshot/mint-mainnet-full-snapshot-20250102.tar.zst

• Sepolia

  Not yet available. We're working on it

Example:

mkdir -p ./data/mainnet-geth

# Download latest snapshot tarball
# You can choose one of two ways to download，Using aria2c to download can improve download speed, but you need to install aria2
1.
wget -c  https://storage.googleapis.com/mint-snapshot/mint-mainnet-archive-snapshot-20241226.tar.zst 
2.
aria2c -x 16 -s 16 -k 100M  https://storage.googleapis.com/mint-mainnet-archive-snapshot-20241226.tar.zst 

# unzip snapshot to the ledger path:
tar --use-compress-program=unzstd -xvf mint-mainnet-archive-snapshot-20241226.tar.zst -C ./data/mainnet-geth

Check the data was unarchived successfully:

$ ls ./data/mainnet-geth
chaindata

Syncing

Sync speed depends on your L1 node, as the majority of the chain is derived from data submitted to the L1. You can check your syncing status using the optimism_syncStatus RPC on the op-node container. Example:

command -v jq  &> /dev/null || { echo "jq is not installed" 1>&2 ; }
echo Latest synced block behind by: $((($( date +%s )-\
$( curl -s -d '{"id":0,"jsonrpc":"2.0","method":"optimism_syncStatus"}' -H "Content-Type: application/json" http://localhost:7545 | jq -r .result.unsafe_l2.timestamp))/60)) minutes

Network Stats

You can see how many nodes you are connected with the following command:

curl -d '{"id":0,"jsonrpc":"2.0","method":"opp2p_peerStats","params":[]}' -H "Content-Type: application/json" http://localhost:7545

Troubleshooting

If you encounter problems with your node, please open a GitHub issue or reach out on our Discord: