Tokenize the contracts that define RWA

The tokenization of real-world assets represents one of the most significant opportunities in financial infrastructure—projected to reach $16 trillion by 2030. BlackRock calls it "the next generation for markets." JPMorgan processes billions in tokenized transactions. Yet a fundamental problem remains unsolved: the trust gap between tokens and the legal documents that give them meaning.

Every real-world asset is ultimately represented by a legal document. A deed proves you own land. A share certificate proves you own equity. A bill of lading proves you have claim to cargo. Without these documents, there is no legal ownership—only a claim.

Trust-Me Tokenization

Today's tokenization is, at best, "trust-me tokenization." Consider the typical NFT implementation:

• Token references metadata that may reference a document
• No cryptographic binding exists between token and document
• Metadata can change; document can change
• Verification requires trusting the issuer completely and indefinitely

When someone claims a token "represents" a house, what does that actually mean? How is the token connected to the deed? What happens if the deed is modified? How does a buyer verify the connection? How does a regulator audit the relationship?

The answer in most implementations: trust the issuer.

Why This Matters

Regulators will not accept "the issuer says so" as proof of asset backing. Institutional investors will not accept unverifiable claims. Auditors will not sign off on systems without documentation trails. The result is a ceiling on adoption that prevents tokenized assets from achieving mainstream acceptance.

Real World Contracts break through this ceiling by providing the verification infrastructure that regulators, institutions, and auditors require.

The Formal Definition

Real World Contracts (RWC) are legal documents—deeds, contracts, titles, certificates, and other instruments of legal significance—that have been given cryptographic blockchain identity, enabling them to serve as the verifiable legal foundation for Real World Assets.

This definition has three critical components:

Legal documents: RWC applies to documents that have legal significance—documents that create, transfer, or evidence rights, obligations, or ownership. This includes deeds, contracts, certificates, licenses, and countless other instruments that form the legal infrastructure of commerce.

Cryptographic blockchain identity: The document is represented on-chain not by its content (which remains private) but by cryptographic identifiers derived from its content. These identifiers are immutable, verifiable, and permanently anchored to the blockchain.

Verifiable legal foundation: The blockchain identity enables verification—any party can confirm that a token is bound to a specific, unaltered document, and can verify this independently without trusting the issuer.

The integraHash: Your Document's Blockchain Identity

Every Real World Contract receives a unique integraHash—a cryptographic fingerprint that serves as its permanent on-chain identifier. The integraHash is:

• Deterministic: Derived from the document's content and registration parameters
• Unique: No two documents can have the same integraHash
• Permanent: Once registered, the identity cannot be changed or revoked
• Verifiable: Anyone can verify that a document corresponds to its integraHash

From Trust to Verification

Traditional tokenization requires trust. RWC enables verification.

Traditional Tokenization	Real World Contracts
Token references metadata that may reference a document	Token cryptographically references a document identity
No cryptographic binding exists	Document identity contains a content hash
Metadata can change	Neither token binding nor document hash can change
Verification requires trusting the issuer	Verification is trustless and permanent

This is the paradigm shift: from trust to verification. Hash the document, compare to the on-chain integraHash, and you have mathematical proof of authenticity. No phone calls. No waiting. No trust required.

The integraHash Algorithm

The integraHash serves as your document's unique blockchain identifier. It is computed as:

documentHash = SHA-256(documentContent)
integraHash = keccak256(documentHash + owner + tokenizer + nonce)

The SHA-256 algorithm is cryptographically secure—any change to the document, even a single character, produces a completely different hash. This enables instant tamper detection: if someone modifies the document, the hash no longer matches, and the forgery is immediately detectable.

Document Privacy Architecture

Documents never go on blockchain—only cryptographic hashes. This is fundamental to our privacy-first architecture:

• Document content: Stored privately by owner (local storage, cloud, or enterprise systems)
• Document hash: Stored on blockchain (reveals nothing about content)
• Verification: Anyone with the document can compute hash and compare

This achieves what we call "public proof of private information"—the blockchain provides permanent, public verification capability while the document itself remains completely private.

The Two-Layer Architecture

Integra separates two distinct concerns:

Layer 1: Document Identity (Immutable)
The IntegraDocumentRegistry stores document hashes, ownership, and bindings. Once registered, document identity cannot be altered. This permanence is essential for legal standing.

Layer 2: Token Economics (Flexible)
Tokenizer contracts create tokens bound to document identities, implementing standard ERC interfaces (ERC-721, ERC-1155, ERC-20). This layer can accommodate diverse use cases while the underlying document identity remains immutable.

Verification Mathematics

Verification is straightforward and trustless:

1. Obtain the document you wish to verify
2. Compute SHA-256(document content) locally
3. Query the IntegraDocumentRegistry for the registered documentHash
4. Compare: if hashes match, document is authentic

This verification works for anyone, anywhere, at any time—no API keys, no permissions, no trust required. The mathematics don't lie.