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Pactvera VDT (Validated Data Token)

What is a Pactvera VDT?​

A Validated Data Token (VDT) is the cryptographic container that captures and seals all execution data related to a Pactvera.

Each VDT is minted on a public blockchain and serves as the source of truth for identity, integrity, context, and execution.

VDTs follow a 1:1 ERC-721 minting model with strict privacy and PII-gating rules.

The 4W Model of a Pactvera VDT​

1. Who (Identity)​

  • ChainIT ID of the signer
  • Biometric authentication proof
  • BeingID Level (1–10)
  • Optional organizational authority (ARP)

2. What (Document)​

  • Cryptographic hash of the document (SHA-256 or equivalent)
  • Document metadata (title, category, type)
  • Immutable post-minting

3. When (Time)​

  • Native blockchain timestamp
  • No external or user-provided timestamps
  • Cryptographically verifiable

4. Where (Location & Device)​

  • Device GPS and carrier-derived data (CDR)
  • Device unique identifier
  • Location stored as hashed coordinates
  • Combined device + location assurance

Additional VDT Attributes​

Token Grade​

Each VDT includes a Token Grade (e.g., A+, B–), derived from:

  • BeingID Level
  • CDR confidence
  • Proof-of-Identity (POI) tier

This grade communicates the strength and reliability of the agreement at a glance.

Ownership & Signatures​

  • Token owner is the signer’s blockchain address
  • Supports delegated or proxy signing with authorization
  • Multi-sig compatible for enterprise use

Off-Chain Linkage​

  • IPFS hash or secure URI for document retrieval
  • Full documents are never stored on-chain
  • Ensures privacy and cost efficiency

Smart Contract Guarantees​

The Pactvera smart contract enforces:

  • Identity verification before minting
  • Document immutability
  • Blockchain-native timestamping
  • Location and device binding
  • One-way state finalization
  • Transparent read access for auditors

Public View Functions​

  • getVDT(tokenId)
  • getGrade(tokenId)
  • getSignerHistory(address)

These enable regulators, courts, and third parties to independently verify execution.