Juno is a golang Starknet node implementation by Nethermind with the aim of decentralising Starknet.
π Looking for a Starknet RPC Provider?
Access Nethermind's Starknet RPC service for free at https://data.voyager.online.
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Golang 1.22 or higher is required to build and run the project. You can find the installer on the official Golang download page.
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Rust.
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A C compiler:
gcc
orclang
. -
Install
jemalloc
andpkg-config
on your system:-
macOS
brew install jemalloc brew install pkg-config
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Ubuntu
sudo apt-get install -y libjemalloc-dev sudo apt-get install -y pkg-config
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To ensure a successful build, you either need to synchronize the tags from the upstream repository or create a new tag.
make juno
./build/juno
Use the --help
flag for configuration information.
Flags and their values can also be placed in a .yaml
file that is passed in through --config
.
To run Juno with Docker, use the following command. Make sure to create the $HOME/juno
directory on your local machine before running the command.
docker run -d \
--name juno \
-p 6060:6060 \
-v $HOME/juno:/var/lib/juno \
nethermind/juno \
--http \
--http-port 6060 \
--http-host 0.0.0.0 \
--db-path /var/lib/juno \
--eth-node <YOUR-ETH-NODE>
You should replace <YOUR-ETH-NODE>
with your actual Ethereum node address.
If you're using Infura, your Ethereum node address might look something like: wss://mainnet.infura.io/ws/v3/your-infura-project-id
.
Make sure you are using the websocket URL ws
/wss
and not the http URL http
/https
.
To view logs from the Docker container, use the following command:
docker logs -f juno
Use the provided snapshots to quickly sync your Juno node with the current state of the network.
Version | Download Link |
---|---|
>=v0.9.2 | juno_mainnet.tar |
Version | Download Link |
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>=v0.9.2 | juno_sepolia.tar |
$date
Thu 1 Aug 2024 09:49:30 BST
$curl -s -I -L https://juno-snapshots.nethermind.dev/files/mainnet/latest | gawk -v IGNORECASE=1 '/^Content-Length/ { printf "%.2f GB\n", $2/1024/1024/1024 }'
172.47 GB
$curl -s -I -L https://juno-snapshots.nethermind.dev/files/sepolia/latest | gawk -v IGNORECASE=1 '/^Content-Length/ { printf "%.2f GB\n", $2/1024/1024/1024 }'
5.67 GB
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Download Snapshot
Fetch the snapshot from the provided URL:
wget -O juno_mainnet.tar https://juno-snapshots.nethermind.dev/files/mainnet/latest
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Prepare Directory
Ensure you have a directory at
$HOME/snapshots
. If it doesn't exist yet, create it:mkdir -p $HOME/snapshots
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Extract Tarball
Extract the contents of the
.tar
file:tar -xvf juno_mainnet.tar -C $HOME/snapshots
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Run Juno
Execute the Docker command to run Juno, ensuring that you're using the correct snapshot path
$HOME/snapshots/juno_mainnet
:docker run -d \ --name juno \ -p 6060:6060 \ -v $HOME/snapshots/juno_mainnet:/var/lib/juno \ nethermind/juno \ --http \ --http-port 6060 \ --http-host 0.0.0.0 \ --db-path /var/lib/juno \ --eth-node <YOUR-ETH-NODE>
After following these steps, Juno should be up and running on your machine, utilizing the provided snapshot.
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Starknet v0.13.1 support.
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JSON-RPC v0.7.0 (Available under
/v0_7
and default/
endpoints)starknet_chainId
starknet_blockNumber
starknet_blockHashAndNumber
starknet_getBlockWithTxHashes
starknet_getBlockWithTxs
starknet_getBlockWithReceipts
starknet_getTransactionByHash
starknet_getTransactionReceipt
starknet_getBlockTransactionCount
starknet_getTransactionByBlockIdAndIndex
starknet_getStateUpdate
starknet_getNonce
starknet_getStorageAt
starknet_getTransactionStatus
starknet_getClassHashAt
starknet_getClass
starknet_getClassAt
starknet_syncing
starknet_getEvents
starknet_call
starknet_estimateFee
starknet_addInvokeTransaction
starknet_addDeclareTransaction
starknet_addDeployAccountTransaction
starkent_estimateMessageFee
starknet_traceTransaction
starknet_traceBlockTransactions
starknet_simulateTransactions
starknet_specVersion
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Juno's JSON-RPC:
juno_version
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JSON-RPC v0.6.0 (Available under
/v0_6
endpoint) -
Integration of CairoVM.
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Verification of State from L1.
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Handle L1 and L2 Reorgs.
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Starknet state construction and storage using a path-based Merkle Patricia trie.
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Feeder gateway synchronisation of Blocks, Transactions, Receipts, State Updates and Classes.
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Block and Transaction hash verification.
- Flat DB implementation of trie
- Go implementation of crypto primitives
- Pedersen hash
- Starknet_Keccak
- Felt
- Feeder gateway synchronisation
- State Update
- Blocks
- Transactions
- Class
- Implement the following core data structures, and their Hash calculations
- Blocks
- Transactions and Transaction Receipts
- Contracts and Classes
- Storing blocks, transactions and State updates in a local DB
- Basic RPC (in progress)
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starknet_chainId
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starknet_blockNumber
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starknet_blockHashAndNumber
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starknet_getBlockWithTxHashes
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starknet_getBlockWithTxs
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starknet_getTransactionByHash
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starknet_getTransactionReceipt
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starknet_getBlockTransactionCount
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starknet_getTransactionByBlockIdAndIndex
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starknet_getStateUpdate
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The focus of Phase 2 will be to Verify the state from layer 1 and implement the remaining JSON-RPC endpoints.
- Starknet v0.11.0 support
- Poseidon state trie support
- Blockchain: implement blockchain reorganization logic.
- Synchronisation: implement verification of state from layer 1.
- JSON-RPC API v0.3.0:
- Implement the remaining endpoints:
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starknet_syncing
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starknet_getNonce
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starknet_getStorageAt
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starknet_getClassHashAt
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starknet_getClass
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starknet_getClassAt
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starknet_getEvents
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- Implement the remaining endpoints:
- Integration of CairoVM:
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starknet_call
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starknet_estimateFee
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- JSON-RPC Write API v0.3.0:
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starknet_addInvokeTransaction
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starknet_addDeclareTransaction
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starknet_addDeployAccountTransaction
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Juno can synchronize Starknet state from other full nodes with the aim of decentralizing Starknet by removing the dependency from the centralized sequencer.
Snap sync is implemented, significantly reducing sync times.
The decentralization of Starknet is complete! Juno becomes a sequencer and participates in L2 consensus to secure the network. Juno has multiple modes of operation: β
β’ Light client: provides fast permissionless access to Starknet with minimal verification.
β’ Full Node: complete verification of Starknet state along with transaction execution.
β’ Sequencer: secure the network by taking part in the L2 consensus mechanism.
We welcome PRs from external contributors and would love to help you get up to speed. Let us know you're interested in the Discord server and we can discuss good first issues. There are also many other ways to contribute. Here are some ideas:
- Run a node.
- Add a GitHub Star to the project.
- Tweet about Juno.
- Add a Github issue if you find a bug, or you need or want a new feature.
To establish a partnership with the Juno team, or if you have any suggestion or special request, feel free to reach us via email.
Copyright (c) 2022-present, with the following contributors.
Juno is open-source software licensed under the Apache-2.0 License.