A preset file contains all the constants known for its target. Later-fork constants can be ignored, e.g. ignore phase1 constants as a client that only supports phase 0 currently.

Format

Each preset is a key-value mapping.

Key: an UPPER_SNAKE_CASE (a.k.a. "macro case") formatted string, name of the constant.

Value can be either:

an unsigned integer number, can be up to 64 bits (incl.)
a hexadecimal string, prefixed with 0x

Presets may contain comments to describe the values.

See mainnet.yaml for a complete example.