Fraud Expert Witnesses: 32

Jack Holowczak is a Luxury Goods Authentication and Valuation Expert and USPAP-compliant Personal Property Appraiser. As Founding Director of PROVENANCE, he has examined 2,000,000+ items across 50+ luxury houses since 2016 — Hermès, Chanel, Louis Vuitton, Goyard, Chrome Hearts — with documented counterfeit and superfake detection protocols.

He serves counsel in counterfeit, trademark, insurance, estate, customs, and criminal matters in all U.S. and Canadian jurisdictions. Fees never contingent.

Seasoned Gambling and Sports Integrity professional and former Chair of the International Betting Integrity Association, with 30 years of experience in prediction markets, sportsbook trading, online sports betting platforms, odds and pricing, integrity monitoring, and governance across multiple jurisdictions.

Mr. Russell provides independent, data-driven analysis of betting markets, sports integrity risks, platform design, and operator conduct in civil, regulatory, and criminal proceedings.