fix: declareV0 hash computation (#1179)

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Next release
 
+- fix: fixed declare V0 placeholder with the hash of an empty list of felts
 - feat(cli): `run` is the by default command when running the `madara` bin
 - refacto(cli): `run` and `setup` commands are defined in their own files
 - refacto(cli): `run.testnet` argument removed in favor of the substrate native

README.md

@@ -252,6 +252,7 @@ Thanks goes to these wonderful people
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/kasteph"><img src="https://avatars.githubusercontent.com/u/3408478?v=4?s=100" width="100px;" alt="kasteph"/><br /><sub><b>kasteph</b></sub></a><br /><a href="https://github.com/keep-starknet-strange/madara/commits?author=kasteph" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/ayushtom"><img src="https://avatars.githubusercontent.com/u/41674634?v=4?s=100" width="100px;" alt="Ayush Tomar"/><br /><sub><b>Ayush Tomar</b></sub></a><br /><a href="https://github.com/keep-starknet-strange/madara/commits?author=ayushtom" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/tchataigner"><img src="https://avatars.githubusercontent.com/u/9974198?v=4?s=100" width="100px;" alt="tchataigner"/><br /><sub><b>tchataigner</b></sub></a><br /><a href="https://github.com/keep-starknet-strange/madara/commits?author=tchataigner" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/antiyro"><img src="https://avatars.githubusercontent.com/u/74653697?v=4?s=100" width="100px;" alt="antiyro"/><br /><sub><b>antiyro</b></sub></a><br /><a href="https://github.com/keep-starknet-strange/madara/commits?author=antiyro" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>

crates/primitives/transactions/src/compute_hash.rs

@@ -91,7 +91,7 @@ impl ComputeTransactionHash for DeclareTransactionV0 {
         let version = if is_query { SIMULATE_TX_VERSION_OFFSET } else { FieldElement::ZERO };
         let sender_address = self.sender_address.into();
         let entrypoint_selector = FieldElement::ZERO;
-        let alignment_placeholder = FieldElement::ZERO;
+        let alignment_placeholder = compute_hash_on_elements(&[]);
         let max_fee = FieldElement::from(self.max_fee);
         let chain_id = chain_id.into();
         let class_hash = self.class_hash.into();