Node Guides

Proof-of-Proof Miners (PoP Miners)

PoP Miners embed Hemi headers — L2 keystones — into Bitcoin blocks, effectively “anchoring” Hemi state to Bitcoin’s security.
PoP Miners receive Hemi headers from a BFG, create BTC transactions with those headers, and forward them to Bitcoin for inclusion in blocks.
Successful PoP Miners are earn rewards on the Hemi network, incentivizing them to maintain network operation.

Network Miners and Operators: Operators or enthusiasts who want to earn rewards by using their Bitcoin node connectivity. More PoP miners = stronger finality guarantees.

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BFG nodes look for Proof-of-Proof (PoP) transactions that embed Hemi headers into Bitcoin, determining if Hemi blocks have attained Bitcoin-level finality.
BFG nodes serve as the “checkpoint” mechanism for finality by confirming whether competing versions of Hemi blocks exist on-chain and identifying possible reorgs. The nodes then supply Hemi data to PoP Miners, parse resulting PoP transactions and communicate finality info to BSS nodes.

PoP Miners: A custom BFG deamon can notify your local PoP miner and this will broadcast them to your Electrs+bitcoind setup so you don't rely on Hemi Labs — or any third party — which may be congested.
Enterprise Node Operators: Exchanges, large dApp platforms, or custodial services that need independent, verifiable finality checks on Hemi transactions.

A PostgreSQL database, bfgd expects the sql scripts in ./database/bfgd/scripts/ to be run to set up your schema.
A connection to:
- An Electrs node on the proper Bitcoin network (testnet or mainnet).
- bitcoind
- bfgd

BSS nodes combine Hemi transactions with Ethereum mainnet batches, creating a hybrid solution that inherits Bitcoin security signals (via BFG) and uses Ethereum’s smart contract capabilities.
These nodes coordinate staking, unstaking, and slashing operations to secure the network, while incorporating finality checkpoints from the BFG. BSS nodes also facilitate cross-chain asset transfers by ensuring that Hemi’s on-chain transactions align with Ethereum-based bridging logic.

Validator/Sequencer Operators: Entities responsible for generating Hemi blocks and maintaining chain consensus.

Hemi Network runs a specialized Geth implementation that supports extended functionalities, enabling seamless interaction between Hemi’s chain state and Ethereum’s mainnet.
This modified Geth node manages Ethereum transactions and block headers in a way tailored for Hemi’s bridging protocols. The node also consolidates Ethereum state so that BSS nodes (and other Hemi components) can quickly verify or execute cross-chain logic.

Last updated 3 months ago

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