Deep dive into the architecture and concepts behind Fairway's compliance infrastructure
Fairway acts as a bridge between traditional compliance systems and blockchain infrastructure, enabling seamless regulatory compliance without sacrificing decentralization.
Fairway uses advanced cryptographic techniques to prove compliance without revealing sensitive personal information.
// Prove age >= 18 without revealing birthdate
circuit AgeVerification {
private input birthdate;
private input current_date;
public input minimum_age;
component age_calc = AgeCalculator();
age_calc.birthdate <== birthdate;
age_calc.current_date <== current_date;
component gte = GreaterEqualThan(8);
gte.in[0] <== age_calc.age;
gte.in[1] <== minimum_age;
gte.out === 1;
}Fairway uses state machines to manage the complete lifecycle of user identities and compliance status.
type ComplianceRule = {
id: string;
jurisdiction: string;
conditions: Condition[];
actions: Action[];
priority: number;
};
type Condition =
| { type: "age_minimum"; value: number }
| { type: "sanctions_check"; lists: string[] }
| { type: "jurisdiction_allowed"; countries: string[] }
| { type: "transaction_limit"; amount: number };
// Example rule evaluation
const evaluateCompliance = (user: User, action: Action): boolean => {
const applicableRules = getRulesForJurisdiction(user.jurisdiction);
return applicableRules.every(rule =>
rule.conditions.every(condition =>
evaluateCondition(condition, user, action)
)
);
};Fairway enables identity verification across multiple blockchain networks while maintaining consistency and security.
Native tokens, Plutus validators
ERC-3643, EAS attestations
Low-cost verification
// Cross-chain identity sync
interface ChainConnector {
deployIdentityToken(proof: ZKProof): Promise<string>;
verifyCompliance(tokenId: string): Promise<boolean>;
syncIdentityState(updates: IdentityUpdate[]): Promise<void>;
}
class MultiChainIdentity {
private connectors: Map<string, ChainConnector>;
async syncAcrossChains(identityId: string) {
const updates = await this.getIdentityUpdates(identityId);
await Promise.all(
Array.from(this.connectors.values()).map(connector =>
connector.syncIdentityState(updates)
)
);
}
}Fairway implements comprehensive error handling to ensure system reliability and user experience.
System failures, security breaches
Invalid data, failed verification
Connectivity issues, timeouts
Invalid input, missing permissions
class ComplianceService {
async verifyWithRetry(userId: string, maxRetries = 3): Promise<ComplianceResult> {
for (let attempt = 1; attempt <= maxRetries; attempt++) {
try {
return await this.verify(userId);
} catch (error) {
if (attempt === maxRetries) throw error;
// Exponential backoff
await this.delay(Math.pow(2, attempt) * 1000);
// Circuit breaker pattern
if (this.circuitBreaker.isOpen()) {
throw new ServiceUnavailableError();
}
}
}
}
}