Full-Node Requirements

Full nodes share all the features of the basic nodes and additionally facilitate Cross-Chain Communication. To do that, they must keep access to external blockchains and off-chain data feed for price oracles. Full node rewards consist of:

• Self-staking rewards which accrue in proportion to the number of staked tokens

• Transaction fees

• Fees from cross-chain transactions

• A portion of nominators' staking rewards (optional)

Technical Requirements

Hardware

Testnet

Resource	Minimum	Recommended
CPU	4 cores	8+ cores
RAM	16 GB	32+ GB
Disk	500 GB	1+ TB

Mainnet

Bonding Requirements

Testnet

Requirements	Amount
Minimum self-bond	100,000 BFC
Minimum voting power (self-bond + total nominated BFC)	100,000 BFC

Mainnet

Operating Performance Standards

To guarantee network stability and fast finality, all node operators are required to meet the published hardware specifications.

Actionable Warning for Validators

Effective immediately, Validator-Nodes must be capable of consistently performing block creation within a 3-second timeframe (the target block time). Validators who fail to maintain this performance standard due to inadequate hardware will be subject to monitoring and have a possibility of being penalized (slashed).

To avoid penalties and ensure optimal block creation performance, your setup must meet or exceed the requirements above.

Operating Requirements

Account Management

Validators should securely manage three accounts, Stash, Controller, and Relayer accounts, for self-bonding deposit and consensus participation, respectively.

• Stash account: An EVM account for the self-bonding deposit.

• Controller account: An EVM account for consensus participation. It should have enough balance for transaction fees used in operations.

• Relayer account: An EVM account for cross-chain action participation. It should have enough balance for transaction fees used in operations.

Required Credentials

Validators require three types of keys as follows:

• AURA key for block production

• GRANDPA key for block finalization

• “Imonline” key to check the node availability

External Source Access

Full nodes should set up Web3 providers to all the external blockchains supported by the Bifrost Network via reusing their blockchain RPC nodes or employing external services (e.g. Infura or NodeReal).

Price Feed

The full-node validators collect on-chain and off-chain data for price oracles.

• On-chain price feed: ChainLink

• Off-chain API: CoinGecko, Upbit, Binance, Gate.io, Kucoin