Glossary
Quick reference for terminology used across the DPO2U documentation.
| Term | Definition | First appears in |
|---|---|---|
| Attestation | An immutable on-chain record certifying a company's compliance score, timestamp, and auditor DID. Stored on the Midnight blockchain via ComplianceRegistry.compact. | Architecture |
| CID | Content Identifier — a cryptographic hash generated by IPFS that uniquely identifies a stored document. Used to link Attestations to their source privacy policies. | Smart Contracts |
| Compact | Midnight's purpose-built smart contract language. Compiles to zero-knowledge circuits — every operation is privacy-preserving by default. | Smart Contracts |
| DID | Decentralized Identifier — a self-sovereign identity standard (W3C). Each DPO2U agent has a DID in the format did:midnight:agent:<name>. | Smart Contracts |
| $DUST | A non-transferable Midnight-layer token used exclusively for gas fees and privacy operations (shielding, zk-SNARK generation). Subject to decay over time. | Tokenomics |
| ERC-8004 | An Ethereum standard for Trustless Agents — on-chain registration of autonomous entities with wallets and permission bitfields. | One Person Unicorn |
| FHE | Fully Homomorphic Encryption — allows computation on encrypted data without decryption. Planned for the Analytical Layer using OpenFHE. | Architecture |
| GDPR | General Data Protection Regulation — the EU's data privacy law. DPO2U schemas are designed to satisfy both LGPD and GDPR requirements. | Schemas |
| IPFS | InterPlanetary File System — a decentralized storage network. DPO2U uses Lighthouse (IPFS pinning service) to store encrypted compliance documents. | Architecture |
| LGPD | Lei Geral de Proteção de Dados — Brazil's data protection law (Lei 13.709/2018). The primary regulatory framework that DPO2U automates. | Introduction |
| MCP | Model Context Protocol — a standard that exposes tools (functions) to AI agents. The DPO2U MCP Server allows any LLM to query compliance status natively. | MCP Server |
| Midnight Network | A data-protection blockchain from the Cardano ecosystem. Uses Compact smart contracts and zk-SNARKs for zero-knowledge verification. | Introduction |
| $NIGHT | A Cardano Native Asset that serves as the economic backbone of DPO2U — used for service fees, agent rewards, and future staking. | Tokenomics |
| Proof Server | A Midnight infrastructure component that generates and verifies zk-SNARK proofs for Compact contract transitions. | Smart Contracts |
| zk-SNARKs | Zero-Knowledge Succinct Non-Interactive Arguments of Knowledge — cryptographic proofs that verify a statement is true without revealing the underlying data. Core to Midnight's privacy model. | Smart Contracts |