interface AttestationResult {
  /** Agent ID from the evidence */
  agentId: string;
  /** Whether the evidence was verified successfully */
  verified: boolean;
  /** Channel token for authenticated communication */
  channelToken: string;
  /** Verifier's Ed25519 session public key for signing verification */
  sessionPublicKey: string;
  /** Verifier's X25519 session public key for ECDH encryption */
  sessionX25519PublicKey?: string;
  /** When the attestation expires */
  expiresAt: number;
  /** Token rotation policy */
  rotationPolicy?: {
    /** Maximum age before rotation (milliseconds) */
    maxAge: number;
    /** Endpoint to call for token refresh */
    refreshEndpoint: string;
  };
  /** Verifier's own attestation type */
  verifierAttestationType?: 'nitro' | 'phala' | 'internal' | 'mock';
}

interface RegisteredAgent {
  /** Unique identifier for the agent */
  agentId: string;
  /** Agent's callback endpoint URL */
  endpoint: string;
  /** URL to the agent's A2A Agent Card */
  agentCardUrl: string;
  /** Hash of the agent's code */
  codeHash: string;
  /** Channel token for authenticated communication */
  channelToken: string;
  /** When the agent was registered */
  registeredAt: number;
  /** When the registration expires */
  expiresAt: number;
}