Query Validation

DA3N's query validation system uses ZK proofs to verify natural language processing accuracy across DeFi operations. The system validates the entire query lifecycle:

Translation Process

• NLP to SQL conversion with proof generation

• Semantic validation through specialized circuits

• Query optimization path verification

• Execution validation across protocols

Each query generates multiple proofs:

1. Input integrity proof

2. Translation accuracy proof

3. Optimization verification proof

4. Execution path proof

Performance:

• Proof generation: <50ms

• Verification: <20ms

• Success rate: >99.9%

// // Core types for ZK query validation
interface ZKQueryValidation {
   queryHash: string;
   proofs: ProofBundle;
   chainData: ChainContext;
}

interface ProofBundle {
   nlpProof: Uint8Array;
   sqlProof: Uint8Array;
   executionProof: Uint8Array;
}

interface ChainContext {
   chainId: number;
   blockNumber: number;
   timestamp: number;
}

// Integration with Ethereum networks
class QueryValidator {
   private web3: Web3;
   private circuits: Map<string, any>;

   constructor(rpcUrl: string) {
       this.web3 = new Web3(rpcUrl);
       this.initCircuits();
   }

   async validateQuery(
       naturalLanguage: string, 
       sqlQuery: string,
       chainId: number
   ): Promise<ZKQueryValidation> {
       // Get current chain context
       const block = await this.web3.eth.getBlock('latest');
       
       // Generate proofs using ZK circuits
       const nlpProof = await this.generateNLPProof(naturalLanguage);
       const sqlProof = await this.generateSQLProof(sqlQuery);
       const execProof = await this.generateExecutionProof(sqlQuery, block.number);

       return {
           queryHash: this.web3.utils.keccak256(naturalLanguage),
           proofs: {
               nlpProof,
               sqlProof,
               executionProof: execProof
           },
           chainData: {
               chainId,
               blockNumber: block.number,
               timestamp: block.timestamp
           }
       };
   }

   // Private circuit methods
   private async generateNLPProof(input: string): Promise<Uint8Array> {
       const circuit = this.circuits.get('nlp');
       return await circuit.prove(input);
   }

   private async generateSQLProof(sql: string): Promise<Uint8Array> {
       const circuit = this.circuits.get('sql'); 
       return await circuit.prove(sql);
   }

   private async generateExecutionProof(
       sql: string,
       blockNumber: number
   ): Promise<Uint8Array> {
       const circuit = this.circuits.get('execution');
       return await circuit.prove(sql, blockNumber);
   }

   private initCircuits() {
       // Initialize ZK circuits for each proof type
       this.circuits = new Map([
           ['nlp', loadCircuit('nlp.zkey')],
           ['sql', loadCircuit('sql.zkey')],
           ['execution', loadCircuit('execution.zkey')]
       ]);
   }
}

// Usage
const validator = new QueryValidator('https://ethereum.rpc.url');

async function verifyDeFiQuery(query: string) {
   const sql = translateToSQL(query); // Translation function
   const validation = await validator.validateQuery(
       query,
       sql,
       1 // Ethereum mainnet
   );
   return validation;
}