The Department of the Treasury, specifically the Internal Revenue Service (IRS), is seeking to extend its contract for Chainalysis tools and support, focusing on cryptocurrency tracking services. This procurement is justified as a sole-source acquisition due to the unique and proprietary nature of the tools, which are critical for law enforcement operations and must remain confidential to protect ongoing investigations and undercover agents. The IRS anticipates that the cost for this extension is fair and reasonable based on prior contract evaluations, and plans to enhance competition in future acquisitions through market research. Interested parties can reach out to Ezilda Warthaw at ezilda.u.warthaw@irs.gov for further information.