anya-core 1.2.0

use std::error::Error;
#[dao_label(DaoLabel::OPENBANK)]
impl ComplianceManager {
    /// Automated regulatory checks
    pub fn verify_transaction(&self, tx: &FiatTransaction) -> Result<ComplianceStatus> {
        let kyc_status = self.kyc_provider.check_status(tx.user_id)?;
        let aml_check = self.aml_engine.scan_transaction(tx)?;
        let sca_proof = self.auth_provider.verify_sca(&tx.auth_data)?;
        
        Ok(ComplianceStatus {
            kyc: kyc_status,
            aml: aml_check,
            sca: sca_proof,
            jurisdiction_rules: self.load_jurisdiction(tx.country_code)?
        })
    }
}

#[dao_label(DaoLabel::ENTERPRISE_4)]
impl ComplianceManager {
    /// Enterprise-grade transaction screening
    pub fn enterprise_screening(&self, tx: &EnterpriseTransaction) -> Result<ComplianceCert> {
        // Added Bitcoin transaction validation
        let bitcoin_proof = verify_bitcoin_anchor(&tx.bitcoin_spv)?; // BPC-3 compliance
        // Multi-jurisdictional checks
        let rules = self.load_all_jurisdictions(tx.affected_countries)?;
        
        // Real-time sanctions screening
        let sanction_check = self.sanctions_engine.check(
            tx.parties.clone(),
            SanctionScope::Global
        )?;
        
        // Transaction pattern analysis
        let behavior = self.ai_analyzer.detect_anomalies(tx)?;
        
        Ok(ComplianceCert {
            tx_hash: tx.hash(),
            rules,
            sanction_check,
            risk_score: behavior.risk_score,
            approval_path: self.generate_approval_path(tx)?
        })
    }

    /// Multi-sig enterprise approval workflow
    #[multi_sig(threshold = 3)]
    pub fn approve_enterprise_tx(&self, tx: EnterpriseTransaction) -> Result<ApprovalProof> {
        let compliance_cert = self.enterprise_screening(&tx)?;
        let taproot_proof = self.create_taproot_commitment(&compliance_cert)?;
        
        Ok(ApprovalProof {
            compliance_cert,
            blockchain_proof: taproot_proof,
            signers: self.get_approvers()
        })
    }

    pub fn multi_sig_authorization(&self, transaction: &Transaction) -> Result<AuthProof> {
        // BPC-3 compliance - verify Bitcoin signatures
        let bitcoin_signatures = verify_taproot_signatures(&transaction.signatures)?;
        
        // DAO-4 compliance - institutional approval flow
        let dao_approval = self.dao_governance.verify_institutional_approval(
            &transaction.id,
            &bitcoin_signatures
        )?;
        
        Ok(AuthProof {
            signatures: bitcoin_signatures,
            dao_approval,
            timestamp: Utc::now(),
            protocol_level: ProtocolLevel::BPC3
        })
    }
}

// Key Features:
- Parallel KYC/AML/Sanctions Checks
- Blockchain Proof Verification
- GDPR-Compliant Redaction