Semantic Tokenization extends the architecture introduced in Canonical Tokenization: A New Architecture for Trustless Document Permanence by defining the missing layer of meaning required for long‑form legal documents to operate across decentralized systems. While canonical tokenization establishes the reversible, schema‑defined structural representation of a document, semantic tokenization formalizes the intent, clauses, roles, obligations, and legal effect that give a document its real‑world meaning. This paper introduces a deterministic semantic mapping framework in which every clause, condition, and identity reference is expressed as a formally defined semantic field. These fields are normalized, versioned, and bound to canonical representations, enabling documents to retain their meaning across chains, execution environments, and multi-decade lifecycles. Semantic tokenization provides the interpretive layer that bytecode‑centric systems lack, ensuring that legal instruments remain intelligible to courts, counterparties, auditors, and identity systems without reliance on proprietary platforms or opaque parsing logic. Key contributions include: Semantic Field Definitions: A structured vocabulary for clauses, obligations, conditions, roles, and legal semantics. Semantic Normalization: Rules that unify equivalent expressions into a single, deterministic meaning representation. Semantic Provenance: DID‑anchored identity semantics that bind parties, signatures, and authority to document meaning. Semantic Lifecycle: A delta‑based evolution model that preserves meaning across amendments, renewals, revocations, and migrations. Semantic Equivalence: A formal method for determining when two documents express the same legal meaning despite structural differences. Semantic → Canonical → Reconstruction Pipeline: A layered architecture enabling full document reconstruction with preserved meaning. Cross‑Rail Semantic Interoperability: A chain‑agnostic semantic layer that operates consistently across Bitcoin, Stellar, EVM chains, and WASM environments. Together with canonical tokenization, semantic tokenization completes the Universal Bridge — a two‑layer architecture enabling trustless, permanent, human‑readable, legally defensible documents anchored to deterministic on‑chain primitives such as Satoshi containers. This work provides the meaning layer required for decentralized legal infrastructure, cross‑border settlement systems, identity frameworks, and long‑term digital preservation. This paper is published as public prior art and as a companion to the author’s canonical tokenization work. It is intended for legal technologists, blockchain architects, standards bodies, and practitioners designing next‑generation document systems that must remain intelligible, enforceable, and reconstructible over decades
Leon Calvin II long (Sun,) studied this question.