#Glossary

• Origin — package with the current generation’s random blocks.
• Signature — package proving that one Origin descends from the previous according to the chosen ladder.
• Ladder — the deterministic linking rule (S or X).
• Generation index (age) — big-endian counter stored in header.
• Gap (g) — difference between indices of two verified signatures.
• Origin size — bit length of each raw block.
• Hasher descriptor — { func/output/size/cdn } definition of a custom digest.
• ULDAPack-Min v1 — minimal binary header used by Origin and Signature packages.
• External hasher registry — runtime map where custom digests are stored.
• Export format — one of bytes, hex, base64 that controls encoding of packages.