FIDUCIA is technology company developing a high frequency distributed ledger technology (DLT) platform delivering transparency, accountability and efficiency for the digital advertising marketplace over the TAG TrustNet industry consortium network, launched as a global initiative jointly with the Trustworthy Accountability Group (TAG), the world’s leading programme to fight criminal activity and protect brand safety in digital advertising. TAG TrustNet enables programmatic marketplace participants to share, harmonize, map and automate the reconciliation of impression log-file data to come up with Shared Truth: a single record of every ad impression across the digital advertising supply chain recorded in an immutable distributed ledger. TAG TrustNet’s launch follows the conclusion of a successful 2-year cross-industry pilot run with major industry players and a subsequent industry consultation, both conducted in coordination and under the supervision of major trade associations and industry experts.