[Joeboy]

> CDR's never match perfectly

With a blockchain based system, what happens if two telcos send CDRs that don't match?

[zeroxfe]

Typically a conflict-resolution mechanism will be built into the consensus mechanism, with the rules set by the peers.

But there will always be transparency (even the bad CDRs will be logged) and accountability (you know who said what, so the incentive for fraud is significantly decreased.)