Module consts 

Locked constants for mk1 per design/SPEC_mk_v0_1.md v0.1.

All values are closure-locked (see docs/superpowers/specs/2026-04-29-mk1-open-questions-closure-design.md). Reproducer for the NUMS-derived target constants is documented in the BIP draft’s “Why new target constants?” section.

Constants

CHUNKED_FRAGMENT_LONG_BYTES

Chunked-fragment long-code payload bytes per chunk.

CHUNKED_FRAGMENT_REGULAR_BYTES

Chunked-fragment regular-code payload bytes per chunk.

CROSS_CHUNK_HASH_BYTES

Cross-chunk integrity hash size in bytes.

GENERATOR_FAMILY

Family-stable generator string (closure Q-10) for vector-corpus SHA-256 anchoring. Patch-version bumps don’t roll the token; minor- or major-version bumps do.

HRP

HRP for mk1 strings (BIP 173 separator 1 follows: prefix is mk1).

MAX_CHUNKS

Maximum chunks per card.

MAX_PATH_COMPONENTS

Maximum components in an explicit-path encoding (closure Q-3).

MK_LONG_CONST

Top 75 bits of SHA-256(NUMS_DOMAIN). Long-code target residue.

MK_REGULAR_CONST

Top 65 bits of SHA-256(NUMS_DOMAIN). Regular-code target residue.

NUMS_DOMAIN

Domain string for NUMS-derived target constants (closure Q-1).

ORIGIN_FINGERPRINT_BYTES

Origin fingerprint size in bytes.

POLICY_ID_STUB_BYTES

Policy ID stub size in bytes (closure Q-2).

SINGLE_STRING_LONG_BYTES

Single-string long-code payload bytes.

SINGLE_STRING_REGULAR_BYTES

Single-string regular-code payload bytes.

XPUB_COMPACT_BYTES

Compact-73 xpub byte size (closure Q-7).