use cases · 17 implementations
Where trust is personal, here's what it lets you build.
Each use case is a self-contained plan: problem statement, architecture with sequence diagrams, concrete SDK code, and a threat model. Pick your category, read the design, clone the examples.
FinTech 5
B2B Invoice Financing
**FinTech · Supply chain · Multi-party validation**
DeFi Oracle Network
**FinTech · DeFi · Decentralized data feeds · Aggregation trust**
Institutional Crypto Custody
**FinTech · High-value · Full key lifecycle management**
Interbank Wire Authorization
**FinTech · High-value · M-of-N signing · Guardian recovery**
Merchant Fraud Consortium
**FinTech · Cross-organization data sharing · Relational trust**
AI 4
AI Agent Capability Authorization
**AI · Agent safety · Time-locked grants · Emergency revocation**
AI Content Authenticity
**AI · Media provenance · C2PA+ · Editing chain of custody**
AI Model Provenance and Supply Chain
**AI · Provenance · Audit trails · Copyright attestation**
Federated Learning Gradient Attestation
**AI · Federated learning · Multi-party cryptographic attestation**
Consumer rights 1
Government 1
Cross-industry 6
Credential Verification Network
**Cross-industry · Education · Licensing · Certifications**
Developer Artifact Signing
**Open source · Supply-chain security · GPG replacement**
DNS Replacement
**Cross-industry · Critical internet infrastructure · Anti-centralization**
Enterprise Domain Authority
**Infrastructure · Split-horizon · Private records · Federated-by-default**
Healthcare Consent Management
**Cross-industry · Patient-controlled access · Emergency override**
Trust-weighted reviews on Quidnug
A global, cross-site review substrate where every rating is weighted by **the observer's** trust graph, not by an average that treats every reviewer as identical. Reviewer identity is portable; reputation is per-vertical; sites and revie…