Remove nonce from serialization/deserialization of offchain attestations

CHANGELOG.md

@@ -8,3 +8,7 @@
 ## 1.4.1 (2024-02-02)
 
 - Check for ethers v6 compatibility
+
+## 1.4.2 (2024-02-03)
+
+- Remove nonce from serialization/deserialization of offchain attestations

README.md

@@ -172,12 +172,9 @@ const signer = new ethers.Wallet(privateKey, provider);
 
 const offchainAttestation = await offchain.signOffchainAttestation({
   recipient: '0xFD50b031E778fAb33DfD2Fc3Ca66a1EeF0652165',
-  // Unix timestamp of when attestation expires. (0 for no expiration)
-  expirationTime: 0n,
-  // Unix timestamp of current time
-  time: BigInt(Math.floor(Date.now() / 1000)),
+  expirationTime: 0n, // Unix timestamp of when attestation expires. (0 for no expiration)
+  time: BigInt(Math.floor(Date.now() / 1000)), // Unix timestamp of current time
   revocable: true, // Be aware that if your schema is not revocable, this MUST be false
-  nonce: 0n, // This variable is optional
   schema: "0xb16fa048b0d597f5a821747eba64efa4762ee5143e9a80600d0005386edfc995",
   refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
   data: encodedData,

dist/offchain/offchain-utils.d.ts

@@ -24,7 +24,7 @@ export type CompactAttestationShareablePackageObject = [
     refUID: string,
     revocable: boolean,
     data: string,
-    nonce: number,
+    reserved: number,
     offchainVersion?: number,
     salt?: string
 ];

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ethereum-attestation-service/eas-sdk",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "description": "Ethereum Attestation Service - TypeScript/JavaScript SDK",
   "repository": "[email protected]:ethereum-attestation-service/eas-sdk.git",
   "author": "Leonid Beder <[email protected]>",

src/offchain/offchain-utils.ts

@@ -33,7 +33,7 @@ export type CompactAttestationShareablePackageObject = [
   refUID: string,
   revocable: boolean,
   data: string,
-  nonce: number,
+  reserved: number, // This field is currently unused and will serialized as 0
   offchainVersion?: number,
   salt?: string
 ];
@@ -88,7 +88,7 @@ export const compactOffchainAttestationPackage = (
     sig.message.refUID === ZeroHash ? '0' : sig.message.refUID,
     sig.message.revocable,
     sig.message.data,
-    Number(sig.message.nonce),
+    0,
     sig.message.version,
     sig.message.salt
   ];
@@ -192,7 +192,6 @@ export const uncompactOffchainAttestationPackage = (
         refUID: compacted[12] === '0' ? ZeroHash : compacted[12],
         revocable: compacted[13],
         data: compacted[14],
-        nonce: BigInt(compacted[15]),
         salt: compacted[17]
       }
     },

test/test/offchain-utils.ts

@@ -71,8 +71,7 @@ const TEST_ATTESTATIONS: Spec[] = [
           revocable: true,
           refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
           data: '0x',
-          salt: '0x0000000000000000000000000000000000000000000000000000000000000123',
-          nonce: 0n
+          salt: '0x0000000000000000000000000000000000000000000000000000000000000123'
         }
       },
       signer: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266'
@@ -126,8 +125,7 @@ const TEST_ATTESTATIONS: Spec[] = [
           expirationTime: 1692891810n,
           revocable: true,
           refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
-          data: '0x',
-          nonce: 0n
+          data: '0x'
         }
       } as unknown as SignedOffchainAttestation,
       signer: '0x8f80b8f45cA0F036da46fFA4D9e5e42D086fB302'