Crate cow_primitives 

cow-primitives — Layer 0 foundational constants for the CoW Protocol SDK.

This crate sits at the bottom of the workspace DAG and has no internal dependencies. It exposes:

• Numeric constants (ZERO, ONE, MAX_UINT256, ONE_HUNDRED_BPS, …)
• The zero address and zero hash helpers
• Near Intents attestation constants

Protocol enums (OrderKind, SigningScheme, TokenBalance, …) live in cow-types (Layer 1) because their TryFrom<&str> impls depend on cow-errors.

Constants

ATTESTATION_PREFIX_CONST

Near Intents attestation prefix constant.

ATTESTATOR_ADDRESS

Near Intents attestator address.

ATTESTION_VERSION_BYTE

Near Intents attestation version byte.

HUNDRED_THOUSANDS

Scale factor: 100 000.

LIMIT_CONCURRENT_REQUESTS

Maximum concurrent requests to the CoW Protocol API.

MAX_UINT32

Maximum u32 value as a U256 (2^32 - 1 = 4 294 967 295).

MAX_UINT256

Maximum U256 value (2^256 - 1).

ONE

U256 one.

ONE_HUNDRED_BPS

One hundred basis points expressed as a U256 (100 * 100 = 10 000).

ZERO

U256 zero.

ZERO_ADDRESS

The zero address (0x0000…0000).

ZERO_HASH

The 32-byte zero hash.