POC: Implement trust chain verification

Create Proof-of-Concept based on Trust Chain Verification sequence.

changed milestone to %Sprint 2

added DevInProgress label

assigned to @yordan.kinkov

added 1 design

mentioned in commit 3b371a45

mentioned in commit daeacb84

removed DevInProgress label

added DevCompleted label

closed

changed milestone to %Sprint 3

mentioned in commit 1a8ea0db