Like the DNA database that the Government wants, the coincidences can occur (identical twins have identical DNA) but in this case additional forensic research confirmed the fraud.

Music released on CDs, at least by major producers, generally has embedded/encoded track data for identification of the source, but the old tracks used in the Hatto releases probably came from vinyl or tape, where there was no such information.

For the old releases, apparently a very precise track length is used, but for a newer one where there's additional info, it may be somewhat looser and used only if an indy release omitted the encoded identification(?).

We may have an expert who can explain it all to us, perhaps.

The effort/ability to "identify" individual tunes in the absence of standard release data certainly explains why all the "online sellers/renters" insist on constantly pushing their "latest versions" with new and improved spyware usage tracking built in.

John