Comparing Alpen and Ethereum

EVM compatibility

Alpen is an EVM-compatible blockchain. The execution client used by the Alpen batch producer is based on Reth and is fully compatible with the EVM spec up to the Prague release, excluding type 3 transactions and blob-related upgrades (EIP-4844). With these exclusions, Alpen can be considered a Type 2.5 zkEVM.

Blockchain functionality

Comparing differences in how Alpen and Ethereum functionally operate:

	Alpen	Ethereum
Consensus:	Proof of Authority	Proof of Stake
Gas asset:	BTC	ETH
Block gas limit:	36,000,000	60,000,000
Block time:	~5s	~12s
Finality:	Probabilistic; blocks are confirmed in checkpoints on a private bitcoin signet about once per hour.	~15m