The Digital Media Project
Source	GA20	Date	2009/04/25
Title	Preliminary working draft of Open Media Marketplace	No.	1228/OMM

Preliminary working draft of Open Media Marketplace

1 Introduction

DMP has developed its Interoperable DRM Platform (IDP) specification as a toolkit. AD #2 describes the process

Study how media value chains are built and run
Single out the DRM functions that are required in value chains handling digital media (primitive functions)
Standardise such DRM primitive functions (tools)
Integrate the tools in a specification (toolkit)
Check that the toolkit can actually be used to implement a large number of representative digital media value chains (use cases)
Make a reference software implementation (Chillout)
Repackage the reference software as a middleware (MXM) with specified API for each tool (MXM Engine)

As is well known the last step was triggered by DMP but actually executed in MPEG.

At the last two DMP meetings the idea of Open Media Marketplace has been discussed. The target of OMM is to provide more tools than those provided by the IDP that only are relevant to the DRM aspect of value chains. However, we believe that a similar process as used for IDP can be adopted for OMM.

The purpose is to identify and characterise the primitive functions that are needed by the Content Users and the Service Providers listed above, so that it becomes possible to

Standardise technologies for each of the primitive functions
Develop the OMM toolkit.

2 An initial OMM walkthrough

On a second thought the separation between Content Users and Service Providers appears rather artificial. Therefore in the following we will try to develop a model that only makes reference to Users. This will be achieved by first developing a walkthrough.

User A wants to assume an OMM Role. The initial Open Media Marketplace can be described by the following walkthrough.

Table 1 –Initial OMM walkthrough

Need	Service
User A must/may in general pay/be paid for the services offered by/to OMM Users	Convert Unit (CU) converts real money into accounting units and vice versa
User A must be Identified in OMM	Identify User (IU) Identifies other Users
User A may need to pay IU (or any other User)	Record Transaction (RT) records all Transactions of a subscribed User with other Users
RT may need to check that a User’s virtual account is backed up by real guarantee	Record Default (RD) is notified by RT if a User has insufficient guarantee
User A may need to describe himself in order to do good business in OMM	Manage Metadata (MM) lets User CRUD Metadata
User A may need to Store some Resources	Manage Resource (MR) lets User CRUD Resources
User A may need to describe some Resources in order to be able to offer them to the OMM	MM lets User CRUD Resource Metadata
A User performs a recordable action	Record Event (RE) records the User Event
An Event related to a Content Item happens	RE records the Content Event
User A needs to Identify Resources, Metadata and their combination	Identify Content (IC) Identifies Content and Content Elements
User A may want to Post his Resources on some delivery system (web, mobile, broadcast)	Host Site (HS) lets User Post Content
User A makes searches on Users and Content	MM respond to User’s Search
User A may find Content C of User B and may want to use it with another Content of his (Content D)	Negotiate Rights (NR) lets User Negotiate Rights to Content C of User B
User A may want to make appropriate edits to Content C and D	Edit Resource (ER) lets User CRUD Product
User A may need to move Content C and D to ER in order to edit	Deliver Content (DC) lets User move Content
User A may want to give licence to his Product and may need somebody to promote it	Promote Content (PC) promotes a Product to prospective Users based on guidelines received
User A may want to Consume Content	Render Content presents Content to a User

Summarising Table 1 provides an initial list of OMM Users along with their definition.

Table 1 – Initial list of OMM Users

User	Acr.	Informal definition: A User who
Convert Unit	CU	Converts money↔accounting units
Identify User	IU	Identifies Users
Record Transaction	RT	Records point transactions
Record Default	RD	Records defaulted transactions
Manage Metadata	MM	CRUDs Metadata of Entities in OMM
Manage Resource	MR	CRUDs Resources
Record Event	RE	Records Events related to Entities in OMM
Identify Content	IC	Identifies Content
Host Site	HS	Offers sites for a specific delivery technology
Negotiate Rights	NR	Offers rights negotiation services between two Users
Edit Resource	ER	Offers audio-visual editing services
Deliver Content	DC	Delivers Content via a specific delivery system
Promote Content	PM	Promotes Content of other Users
Render Content	RC	Presents Content for consumption

3 Analysis of User to User interactions

3.1 Introduction

In this chapter we explore all relationships that exist between two interacting Users by identifying the relevant primitive functions for each pair of Users.

3.2 Between any two Users

Primitive Function	Users	Description
Request Initiation of Service	USnUS	US1 requests US2 to initiate Service Contract
Request Termination of Service	USnUS	US1 requests US2 to terminate Service Contract
Request to Purchase	USnUS	US1 requests US2 to purchase a Content Item
Notify Payment Received	USnUS	US1 notifies US2 that payment has been received

3.3 Between a User and a specific User

3.3.1 USnCU

Primitive Function	Users	Description
Request Conversion	USnCU	US requests CU to convert real money into Units or vice versa

3.3.2 USnIU

Primitive Function	Users	Description
Request User Identification	USnIU	US requests IU to be Identified
Request User Authentication	USnIU	US1 requests IU to Authenticate US2

3.3.3 USnRT

Primitive Function	Users	Description
CRUD Account	USnRT	US requests RT to CRUD Account
Request Availability to Cash	USnRT	US1 requests RT to notify US2 that he awaits payment
Request to Pay	RTnUS	RT request US2 to pay US1
Request to Remunerate	USnRT	US1 requests RT to Remunerate US2
Notify Payment Performed	RTnUS	RT notifies US2 that US1 has paid
Request Transaction Log	USnRT	US requests RT to provide a Transaction log
Notify Transaction	RTnUS	RT notifies US that Account has been Credited/Debited

3.3.4 USnRD

Primitive Function	Users	Description
Request Default	USnRD	US1 requests RD defaulted Transactions of US2

3.3.5 USnMM

Primitive Function	Users	Description
CRUD Metadata	USnMM	US requests MM to CRUD Metadata of an Entity
Request Metadata	USnMM	US requests MM Metadata of a given instance of an Entity
CRUD Playlist	USnMM	US requests MM to CRUD a Playlist
Rate Entity	USnMM	US requests MM to Rate an Entity
Search Entity	USnMM	US requests MM to provide a list of Entities satisfying a matching criterion

3.3.6 USnMR

Primitive Function	Users	Description
CRUD Resource	USnMR	US requests MR to CRUD a Resource
Request User Resource	USnMR	US1 requests MR a specific Resource of US2

3.3.7 USnRE

Primitive Function	Users	Description
Request Record Event	USnRE	US requests RE to record a specific event (e.g. page view)
Request Event	USnRE	US requests RE Events of the desired Entity
Request Notification	USnRE	US requests RE to be Notified of specific Events
Notify Event	REnUS	RE Notifies US of the requested specific Events

3.3.8 USnIC

Primitive Function	Users	Description
Request Content Identification	USnIC	US requests IC to Identify a Content Item
Request Content Authentication	USnIC	US requests IC to Authenticate Content Item

3.3.9 USnHS

Primitive Function	Users	Description
CRUD Site	USnHS	US requests HS to CRUD a Site to Post Content

3.3.10 USnNR

Primitive Function	Users	Description
Request Negotiation	USnNR	US1 requests NR to Negotiate Rights to CI2 of US2

3.3.11 USnER

Primitive Function	Users	Description
Request Edit	USnER	US requests ER to Edit Resources

3.3.12 USnDC

Primitive Function	Users	Description
Request Delivery	USnDC	US1 requests DC to Deliver Content Item to/from US2

3.3.13 USnPM

Primitive Function	Users	Description
Request Promotion	USnPM	US requests PM to Promote use of Content Item

3.4 Between two Users of the same type

3.4.1 RTnRT

Primitive Function	Users	Description
Notify Cash Disposition	RTnRT	RT1 notifies RT2 readiness to cash
Authorise Payment	RTnRT	RT2 authorises RT1 to add specified Unit amount to US1

3.4.2 RDnRD

Primitive Function	Users	Description
Request Default	RDnRD	RD1 requests defaulted Transactions of US2 to RD2

3.4.3 MMnMM

Primitive Function	Users	Description
Request Metadata	MMnMM	MM1 requests Metadata of desired Entity MM2

3.4.4 MRnMR

Primitive Function	Users	Description
Request User Resource	MRnMR	MR1 requests Resource to MR2

3.4.5 REnRE

Primitive Function	Users	Description
Request Event	REnRE	RE1 requests Events of desired Entity to RE2

3.4.6 ICnIC

Primitive Function	Users	Description
Request Content Authentication	ICnIC	IC1 requests Authentication of CI2 to IC2

3.4.7 DCnDC

Primitive Function	Users	Description
Request Delivery	DCnDC	DC1 (e.g. web D.) requests DC2 (e.g. mobile D.) to Deliver Content Item to/from US2

3.5 Between CU and some specific User

3.5.1 CUnRT

Primitive Function	Users	Description
Request Credit Unit	CUnRT	CU requests RT to add/subtract a Unit amount to/from US Account

3.6 Between RT and some specific User

3.6.1 RTnCU

Primitive Function	Users	Description
Request Account Status	RTnCU	RT requests CU the status of US real account

3.6.2 RTnRD

Primitive Function	Users	Description
Communicate Default	RTnRD	RT communicates to RD that US has defaulted

4 Terminology

Account	A ledger of Transactions in Units
CRUD	Create, Read, Update, Delete
Default	An event caused by a User who does not have enough Units to cope with his OMM obligations
Delivery	The moving of Content from an OMM User to another OMM User
Entity	Any of Content Event Group Metadata Playlist Resource Site User