Queries Verification on Cosmwasm PoC

This is a demo of verifying and parsing Wormhole Queries on Cosmwasm.

This example uses the Wormhole Core contract to get the current guardian set.

Since the core contract does not expose a function to verify signatures against a payload, this example replicates that code from the parse_and_verify_vaa core contract method in verify_signatures_from_hash.

This example also uses the wormhole-query-sdk-rust repo from Wormhole Labs to parse the query responses.

It provides a trivial example of parsing a query response for a totalSupply call on the WETH contract.

Running the Tests

To run the tests do:

$ cargo test

Building the Artifact

To build the wasm file for deployment do:

$ scripts/build.sh

Testing in Tilt

You can play with this contract in the tilt environment using the sample query program.

Deploying to Tilt

Before deploying this contract to tilt, do the following:

• Build the artifact as described in the previous step.
• Bring up tilt with the --terra2 option.
• Check the terra2-terrad output in tilt and verify the address in the Instantiated cw_wormhole.wasm at line matches the value of wormhole_contract in scripts/deploy_to_tilt.sh. Update the script if necessary.

The first time you do the deployment, you need to do:

$ cd scripts
$ npm ci

Then you can deploy the contract by doing:

$ script/node deploy_to_tilt.js

Run the example query

Once you have deployed the contract, you can run the sample query by doing the following.

First, verify the value of the contract in scripts/query.js matches the deployed address in the previous step. Update the script if necessary.

Then run the script by doing:

$ scripts/node query.js

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⚠ This software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.