CREATE TABLE cbdc_transactions (     id NUMBER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,     type VARCHAR2(50),     recipient VARCHAR2(50),     bank VARCHAR2(50),     amount NUMBER,     status VARCHAR2(20),     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ); --- 3. Oracle Blockchain (Hyperledger Fabric) Smart Contract (cbdcContract.js) 'use strict'; const { Contract } = require('fabric-contract-api'); class CBDCContract extends Contract {     async sendToBank(ctx, bank