Wow! what a cliff hanger. It seemed like Mr. Davidson was itching to ask that question for the entire meeting. Perhaps he lost some bitcoin to MTGOX...
I could not find a video of the whole testimony given by Chainalysis and others present for the hearing including: Jerry Brito, executive director of the non-profit advocacy group CoinCenter; Scott Dueweke, president of the Identity and Payments Association; Kathryn Haun, assistant US Attorney and Digital Currency Coordinator for the Department of Justice; and Luke Wilson of Elliptic.
"According to a memorandum published a few days ago, the US House of Representatives Financial Services Committee organized a new Bitcoin Congressional Hearing. The event – dubbed “Virtual Currency: Financial Innovation and National Security Implications” – was held on Thursday (June 8th, 2017) and hosted by the Terrorism and Illicit Finance Subcommittee."
This info was taken from: http://bitcoinchaser.com/bitcoin-congressional-hearing and Amelia Tomasicchio. She writes:
According to the published memorandum, this bitcoin congressional hearing focused on exploring how terrorists use of Fintech and bitcoin:
“This hearing will explore terrorists and illicit use of financial technology (FinTech), the national security implications of virtual currencies such as Bitcoin, and the use of “blockchain” technologies to record transactions and uncover illicit activities. Witnesses will provide testimony about the exploitation of virtual currency by terrorists and transnational criminal groups, as well as provide risk assessments and policy considerations to mitigate illicit financing but not to impede the development of FinTech innovations”.