You can copy the data and past on SHA256 online tool. Remember to leave any space from input

{
  "@context": [
    "https://gs1.github.io/EPCIS/epcis-context.jsonld",
    {
      "example": "http://ns.example.com/epcis/"
    }
  ],
  "id": "https://id.example.org/document1",
  "type": "EPCISDocument",
  "schemaVersion": "2.0",
  "creationDate": "2005-07-11T11:30:47.0Z",
  "epcisBody": {
    "eventList": [
      {
        "eventID": "ni:///sha-256;df7bb3c352fef055578554f09f5e2aa41782150ced7bd0b8af24dd3ccb30ba69?ver=CBV2.0",
        "type": "ObjectEvent",
        "action": "OBSERVE",
        "bizStep": "shipping",
        "disposition": "in_transit",
        "epcList": [
          "urn:epc:id:sgtin:0614141.107346.2017",
          "urn:epc:id:sgtin:0614141.107346.2018"
        ],
        "eventTime": "2005-04-03T20:33:31.116000-06:00",
        "eventTimeZoneOffset": "-06:00",
        "readPoint": {
          "id": "urn:epc:id:sgln:0614141.07346.1234"
        },
        "bizTransactionList": [
          {
            "type": "po",
            "bizTransaction": "http://transaction.acme.com/po/12345678"
          }
        ]
      },
      {
        "eventID": "ni:///sha-256;00e1e6eba3a7cc6125be4793a631f0af50f8322e0ab5f2c0bab994a11cec1d79?ver=CBV2.0",
        "type": "ObjectEvent",
        "action": "OBSERVE",
        "bizStep": "receiving",
        "disposition": "in_progress",
        "epcList": [
          "urn:epc:id:sgtin:0614141.107346.2018"
        ],
        "eventTime": "2005-04-04T20:33:31.116-06:00",
        "eventTimeZoneOffset": "-06:00",
        "readPoint": {
          "id": "urn:epc:id:sgln:0012345.11111.400"
        },
        "bizLocation": {
          "id": "urn:epc:id:sgln:0012345.11111.0"
        },
        "bizTransactionList": [
          {
            "type": "po",
            "bizTransaction": "http://transaction.acme.com/po/12345678"
          },
          {
            "type": "desadv",
            "bizTransaction": "urn:epcglobal:cbv:bt:0614141073467:1152"
          }
        ],
        "example:myField": "Example of a vendor/user extension"
      }
    ]
  }
}

This is the Hash inserted in the Blockchain Transaction that you can see from Blockchain Explorer

1a447ffeb4df0a29eaa61324b90aa8149453f17331b7f5a3b83d98f0f7f98c53

This is the Date and Time of the Transaction

6:21:00 PM - Wed Apr 20 2022

Transaction Hash: 0x6fe4...d38