The National Institute of Standards and Technology (NIST) invites organizations to provide products and technical expertise to support and demonstrate security platforms for the Derived Personal Identity Verification (PIV) Credentials Building Block. This notice is the initial step for the National Cybersecurity Center of Excellence (NCCoE) in collaborating with technology companies to address cybersecurity challenges identified under the Derived PIV Credentials Building Block. Participation in the building block is open to all interested organizations.