EAS Service

Running the service

To run the service listening at a specific port (e.g. 4000), do:

yarn start 4000

Using a .env file

You can configure environment variables for the service by creating a .env file in the root of your project. This file should contain the key-value pairs for your configuration:

• PORT: The port on which the service will run.
• PRIVATE_KEY: The signer (gas payer) private key.
• OP_PROVIDER: The RPC URL for the Optimism network.
• SCHEMA_UID: The schema UID for the Optimism network.

Using the service

Publish an attestation

An example call to the service that will publish the attestation.

curl
-X POST
-H "Content-Type: application/json"
-d '{"userID":"0x1234","portOrCompanyName":"Porto de Santos","portOrCompanyCoordinates":["-23.9833","-46.3333"],"actionType":"Entrada","actionDate":"2021-07-01","actionCoordinates":["-23.9833","-46.3333"],"collectorName":"João","incomingMaterials":["Plástico"],"incomingWeightsKg":["100"],"incomingCodes":["123"],"outgoingMaterials":[""],"outgoingWeightsKg":[""],"outgoingCodes":[""],"productName":"Plástico","batchQuantity":"100","weightPerItemKg":"1"}'
http://localhost:3000/attest

Check that the service is alive

curl http://localhost:3000/ping