A proposed definition for an OCFL inventory file

inventory

{
    "type": "Object",
    "head": "#v6",
    "previous": { "#v5": "bv65gh98" } // OPTIONAL. The "head" value and checksum of previous version of this file, if it exists.
    "checksum": "md5" // OPTIONAL; default value is sha512. A string describing the checksum algo used in this file. 

	// For validation & object reconsitution, a scan of all version directories
	// MUST contain at least 1 file that matches every checksum here,
	// but we don't actually care what the filename is - just that the content
	// is present.
	
    "manifest": [ 
      "a83e3633",
      "bb123efc",
      "f4abe741",
      "ee983ac4"
      ]

   // Here we use forward diffs to construct the object history through
   // various versions. ADD, COPY, RENAME and DELETE actions are demonstrated.
   // The intention is that the most recent inventory file should be capable
   // of re-constituting the object to any prior delta or version level.

  // It presumes that a scan of all the version directories has taken place,
  // and that at least one file that matches every checksum referenced above has been found.

  "deltas": [
    // An array of delta objects.
    {
      "id": "#d1", // The first delta; initial add of 3 files
      "version": "#v1" // This delta represents the object at v1.
      "checksums": [ 
        { "a83e3633": ["file1"] },
        { "bb123efc": ["file2"] },
        { "f4abe741": ["file3"] }
        ]
    },
    {
      "id": "#d2" // 2nd delta
      "version": "#v2" // v2 copy file2 to file4 
      "checksums": [ 
        { "bb123efc": ["file2","file4"] }
        ]      
    },
    {
      "id": "#d3" // 3rd delta
      "version": "#v3" //v3 rename file1 to file5
      "checksums": [ 
        { "a83e3633": ["file5"] }
        ]      
    },
    {
      "id": "#d4" // 4th delta
      "version": "#v4" // v4 add file6
      "checksums": [ 
        { "ee983ac4": ["file6"] }
        ]      
    },
    {
      "id": "#d5" // 5th delta
      "version": "#v5" // v5 delete file3
      "checksums": [ 
        { "f4abe741": [""] }
        ]      
    },
    {
      "id": "#d6" // 6th delta
      "version": "#v6" // v6 delete file4, rename file2 to file7
      "checksums": [ 
        { "bb123efc": ["file7"] }
        ]            
    },
  ]
  
  // currentState is OPTIONAL, and is a convenience object that represents the state of underlying perservation object at #head.
  "currentState": { 
    "checksums": [
        { "a83e3633": ["file5"] },
	{ "bb123efc": ["file7"] },
	{ "ee983ac4": ["file6"] }
      ]
  }
  
}

"manifest": {
"checksums": [
{ "a83e3633": ["v1/file5", "v3/file19"] },
{ "bb123efc": ["v2/file7"] },
{ "ee983ac4": ["v3/file6"] }
]

Adds example of 2 files in 2 different versions with the same digest.