Hash file system and method for use in a commonality factoring system

A method for establishing an identifier for at least a portion of a digital sequence comprising:

• performing a function on said at least a portion of said digital sequence to produce a probabilistically unique symbol therefore;
• establishing a correspondence between said at least a portion of said digital sequence and said probabilistically unique symbol;
• and
• utilizing said probabilistically unique symbol as said identifier.

A computer program product comprising:

• a computer usable medium having computer readable code embodied therein for establishing an identifier for at least a portion of a digital sequence comprising:
• computer readable program code devices configured to cause a computer to effect performing a function on said at least a portion of said digital sequence to produce a probabilistically unique symbol therefore;
• computer readable program code devices configured to cause a computer to effect establishing a correspondence between said at least a portion of said digital sequence and said probabilistically unique symbol;
• and
• computer readable program code devices configured to cause a to effect utilizing said probabilistically unique symbol as said identifier.