What are best practices for implementing Supply chain attestations?

// Example implementation of supply chain attestation
class SupplyChainAttestation {
    public function attestComponent($component) {
        // Perform signature verification
        if ($this->verifySignature($component)) {
            // Log the attestation
            $this->logAttestation($component);
            return "Attestation successful for " . $component->name;
        } else {
            return "Attestation failed for " . $component->name;
        }
    }

    private function verifySignature($component) {
        // Add logic to verify component's signature
        // Return true if valid, false otherwise
    }

    private function logAttestation($component) {
        // Log successful attestations for auditing
    }
}

// Usage
$attestation = new SupplyChainAttestation();
echo $attestation->attestComponent($someComponent);