Specifications

This document is not a full system spec, it's instead intended to be a brief description of externally-facing behavior that is useful for application developers.

Consensus parameters

Block time	5 seconds
Block gas limit	36,000,000
EVM Chain ID	8150

These numbers will change in the future as Alpen's design evolves.

Upstream precompiles

All upstream precompiles supported as of Prague, except 0x0a for KZG proofs.

See execution-specs or evm.codes/precompiled for more information.

Other notable addresses

• 0x5400000000000000000000000000000000000001: Bridge withdrawal precompile. See the bridge documentation for more information.

• 0x5400000000000000000000000000000000000002: Schnorr signature verification precompile.