Electronic Copyright Management System Testbed

Judith Grass - CNRI

Deposit of copyrighted materials
- Currently hard copy at Library of Congress
- Move to electronic repository
Registration and automated filing of copyright claims
- Currently a manual process at the L.O.C.
Rights, permissions and recordation
Process validation

System Components and Information Flow

Figure (GIF - 14790 bytes)

Digital Objects

May incorporate works subject to copyright
May be performances of works subject to copyright
May be works unto themselves
May contain confidential or proprietary material

Examples of Works Incorporated in Digital Objects

Literary Works
Movies
Pictures and Graphics
VLSI Designs
Software
Simulations
Knowledge Structures

Fingerprinting a Digital Object

           _________
          |         |
          |         |                 _
          |         |   =========>   |_|  
          |         |
          |         |              Tiny Fingerprint
          |_________|
      Large Digital Object

Fingerprints are maintained in an IR Server (known as the Registration and Recordation Server) along with Properties Records of all Copyright Registration claims; they may be used to authenticate digital objects at any time in the future.

Digital Objects and Handles

A Sequence of bits & a handle
A Handle is
- An object identifier
- Unique
- Essentially permanent
- Location independent
- Scalable
- Support retrieval

Handle Syntax

hdl://auth_name/time_stamp:num/descriptor
Authority Name
- Hierarchical: techmemo.lib.megacorp
Time stamp
- yyyymmdd.hhmmss: 19940718.203255
- serial number
- unique in combo with authority name
Descriptor

Handle Examples

hdl://cs.berkeley.edu/19991202.145532/cstr_5782
hdl://dls.cnri.us/20100530232323:5/
hdl://lib_of_cong.us/19930401.020000/isbn0-201-62224-6
hdl://tech_memo.lib.megacorp/2000.1131.235959/tm-775-22