slot index is zero for merklized credentials (#114)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@0xpolygonid/js-sdk",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "SDK to work with Polygon ID",
   "main": "dist/cjs/index.js",
   "module": "dist/esm_esbuild/index.js",

src/proof/proof-service.ts

@@ -705,11 +705,11 @@ export class ProofService implements IProofService {
     }
     parsedQuery.query.valueProof.value = mtEntry;
 
-    if (merklizedPosition == MerklizedRootPosition.Index) {
-      parsedQuery.query.slotIndex = 2; // value data slot a
-    } else {
-      parsedQuery.query.slotIndex = 5; // value data slot b
-    }
+    // for merklized credentials slotIndex in query must be equal to zero
+    // and not a position of merklization root.
+    // it has no influence on check in the off-chain circuits, but it aligns with onchain verification standard
+    parsedQuery.query.slotIndex = 0;
+
     if (!parsedQuery.fieldName) {
       const resultQuery = parsedQuery.query;
       resultQuery.operator = QueryOperators.$eq;

tests/proofs/sig-onchain.test.ts

@@ -151,8 +151,8 @@ describe('sig onchain proofs', () => {
         context:
           'https://raw.githubusercontent.com/iden3/claim-schema-vocab/main/schemas/json-ld/kyc-v3.json-ld',
         credentialSubject: {
-          documentType: {
-            $eq: 99
+          birthday: {
+            $lt: 20020101
           }
         }
       }
@@ -164,12 +164,17 @@ describe('sig onchain proofs', () => {
     const credsForMyUserDID = await credWallet.filterByCredentialSubject(creds, userDID);
     expect(credsForMyUserDID.length).to.equal(1);
 
-    const { proof, vp } = await proofService.generateProof(proofReq, userDID, {
+    const { proof, vp, pub_signals } = await proofService.generateProof(proofReq, userDID, {
       challenge: BigInt(2),
       skipRevocation: false
     });
     console.log(proof);
 
     expect(vp).to.be.undefined;
+
+    // query hash test
+    expect(pub_signals[2]).to.be.equal(
+      '15045271939084694661437431358729281571840804299863053791890179002991342242959'
+    );
   });
 });