Nuffle

At this initial testnet stage, operators need to be whitelisted . If you are interested and have not already been whitelisted, please contact the NFFL team!

Minimal Hardware Specifications

Component	Specifications
CPU	x86_64 (Intel, AMD) processor with at least 8 physical cores
CPU Features	CMPXCHG16B, POPCNT, SSE4.1, SSE4.2, AVX
RAM	32GB DDR4
Storage	1.5TB SSD (NVMe SSD is recommended)
Operating System	Linux (tested on Ubuntu 22.04 LTS)

Introduction

Rollups on the Ethereum network are gaining traction, indicating a new phase in the development of decentralized applications (dApps) and smart contracts. However, as the ecosystem continues to evolve towards a rollup-centric roadmap, it confronts new challenges such as state and liquidity fragmentation and extended finality time.

In order to solve this problem, the Nuffle Fast Finality Layer (NFFL, formerly SFFL) was designed. Through it, various chains can, while supplying block data to NEAR DA, rely on the economic security of an EigenLayer AVS to provide a faster block finality to various protocols and use-cases while also including an additional public DA layer into their stack.

This universal, secure and fast finality leads to major advancements in interoperability protocols, enabling or improving designs such as general bridging and chain abstraction.

For more details, refer to Protocol Design. NFFL is under active development and is not yet available on any publicly accessible environments.

1. Install Docker & Docker compose

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io
docker version

VER=$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep tag_name | cut -d '"' -f 4)
curl -L "https://github.com/docker/compose/releases/download/"$VER"/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

chmod +x /usr/local/bin/docker-compose
docker-compose --version

2. Install EigenLayer CLI

curl -sSfL https://raw.githubusercontent.com/layr-labs/eigenlayer-cli/master/scripts/install.sh | sh -s
export PATH=$PATH:~/bin
eigenlayer --version

3. Clone NFFL repo

git clone https://github.com/NethermindEth/near-sffl.git
cd near-sffl/setup/plugin
cp .env.example .env

4. Create/Import Eigenlayer wallet

# Generate encrypted ECDSA and BLS keys using the CLI:

eigenlayer operator keys create --key-type ecdsa "wallet_name"

!!! Set password & save your private key

eigenlayer operator keys create --key-type bls "wallet_name"

!!! Set password & save your private key

# Import an old key (optional)

eigenlayer operator keys import --key-type ecdsa "wallet_name" PRIVATEKEY

eigenlayer operator keys import --key-type bls "wallet_name" PRIVATEKEY

5. Fund your Eigen wallet

You’ll need at least 1 Holesky ETH to cover the gas cost of the operator registration.

Link faucet Holesky ETH: https://cloud.google.com/application/web3/faucet/ethereum/holesky
https://holesky-faucet.pk910.de/

6. Config & register operator

eigenlayer operator config create

Enter your operator address: your Eigenlayer address
Enter your earnings address (default to your operator address): `your Eigenlayer address`
Enter your ETH rpc url: https://ethereum-holesky-rpc.publicnode.com
Select your network: `holesky`
Select your signer type: `local_keystore`
Enter your ecdsa key path: /root/.eigenlayer/operator_keys/joseph-test1.ecdsa.key.json

7. Edit metadata.json

nano /root/chainbase-avs-setup/holesky/metadata.json

Sample:

{
  "name": "JosephTran",
  "website": "https://www.josephtran.xyz",
  "description": "Blockchain enthusiast and validator",
  "logo": "https://raw.githubusercontent.com/Josephtran102/chainbase/main/Jlogo.png",
  "twitter": "https://x.com/josephtran102"
}

Create a Public repositry in github
Upload logo.png and metadata.jsonthere.

8. Edit operator.yaml

nano /root/chainbase-avs-setup/holesky/operator.yaml

Set URL metadatar with raw file link:

metadata_url: https://raw.githubusercontent.com/Josephtran102/chainbase/main/metadata.json

9. Register Eigenlayer Operator (holesky)

eigenlayer operator register operator.yaml

You Operator link:
https://holesky.eigenlayer.xyz/operator/0xeE6226ceF7c173665dC55E3194D11FB7993d8215

Check status:

eigenlayer operator status operator.yaml

10. Setup & Register NFFL Operator