• Identity & Verification: Sponsor attestations; cryptographic identity; progressive disclosure; biometrics optional (bonus only).
• Relationship Graph: Context-tagged interaction history; trust path computation.
• Trust Computation: Multi-dimensional (reliability/competence/integrity/care) with confidence intervals and network propagation.
• Exchange Layer: Smart-contract enforcement, escrow, automatic settlement, dispute triggers.
• Data model: Pseudonymized participants, encrypted agreement text, minimal PII by design.
• Security: Zero-knowledge proofs for threshold attestations; homomorphic encryption for private aggregation; model kill-switches; auditable logs.
• Staging: Start centralized for speed/safety; introduce blockchain only for critical records once protocols stabilize (immutability where helpful).