Hermes Network Hyperledger Demo

Models within this business network

Participants

Company, Customer, GroundStation, Regulator, Satellite

Assets

ServiceRequest

Transactions

InitialApplication, approveRequest, RejectRequest, SendToGroundStation, ReceivedByGroundStation, SatelliteConfirmation, GroundStationDownload, ReadyForPayment, Close

Events

InitialApplicationEvent, approveRequestEvent, RejectRequestEvent, SendToGroundStationEvent, ReceivedByGroundStationEvent, SatelliteConfirmationEvent, GroundStationDownloadEvent, ReadyForPaymentEvent, CloseEvent

Testing this network within composer playground

The steps below will simulate the above scenario within composer playground.

Navigate to the Test tab and then submit a CreateDemoParticipants transaction:

{
  "$class": "org.example.loc.CreateDemoParticipants"
}

Navigate to the Test tab and then submit an InitialApplication transaction to request satellite services.

{
    "$class": "org.example.loc.InitialApplication",
    "requestId": "REQUEST-REF-123",
    "applicant": "resource:org.example.loc.Customer#Startup",
    "beneficiary": "resource:org.example.loc.Company#ESA",
    "issuingSatellite": "resource:org.example.loc.Satellite#ESA1",
    "rules": [
      {
        "ruleId": "REQUEST-REF-123-RULE-1",
        "ruleText": "Description of rule 1"
      },
      {
        "ruleId": "REQUEST-REF-123-RULE-2",
        "ruleText": "Description of rule 2"
      }
    ],
    "requestDetails": {
        "$class": "org.example.loc.RequestDetails",
        "productType": "Imagery",
        "targetCountry": "UK",
        "lat": 876554,
        "long": 764769,
        "timestampRange": 1549969957
      }
  }

This creates a ServiceRequest asset.

---

Regulator needs to Approve request, if it's compliant to the regulators law. Request is validated by “law & regulation” enforcement smart contract (chaincode) and status is set to APPROVED or REJECTED.

Approve the request by submitting an approveRequest transaction:

  {
    "$class": "org.example.loc.approveRequest",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123",
    "approvingParty": "resource:org.example.loc.Regulator#EU"
  }

---

Hermes receives validated and approved request and selects ground station based on the closest communication to the requested satellite.

Submit SendToGroundStation transaction:

 {
    "$class": "org.example.loc.SendToGroundStation",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123",
    "evidence": "GS_SIGNATURE_116527"
  }

---

Ground station receives validated request with specific parameters and starts broadcasting it to the satellite.

Submit ReceivedByGroundStation transaction:

  {
    "$class": "org.example.loc.ReceivedByGroundStation",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123",
    "evidence": "GS_SIGNATURE_116527_CONFIRMED"
  }

---

Satellite receives broadcasted command with parameters and sends back confirmation of understanding to the ground station.

Submit SatelliteConfirmation transaction:

  {
    "$class": "org.example.loc.SatelliteConfirmation",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123",
    "evidence": "SAT_SIGNATURE_6853474_CONFIRMED"
  }

---

Satellite has performed the required work and it’s broadcasting the results to the nearest ground station. Ground station receives data from satellite, saves confirmation to the blockchain and uploads data to the Hermes Cloud.

Submit GroundStationDownload transaction:

  {
    "$class": "org.example.loc.GroundStationDownload",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123",
    "evidence": "GS_SIGNATURE_116527_RECEIVING_DOWNLOADING",
    "requestedData": "[{data: 011010000110010101110010011011010110010101110011}]"
  }

---

Data are available for customer in Hermes Cloud and service is ready for payment.

Submit ReadyForPayment transaction:

  {
    "$class": "org.example.loc.ReadyForPayment",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123"
  }

---

Request of service is complete.

Submit Close transaction:

  {
    "$class": "org.example.loc.Close",
    "loc": "resource:org.example.loc.ServiceRequest#REQUEST-REF-123",
    "closeReason": "ISSUED_AND_COMPLETED"
  }