John Callahan
John Callahan
Chief Technology Officer (CTO), VeridiumJohn Callahan is currently serving in the capacity of Chief Technology Officer (CTO) at Veridium. He has previously worked as Senior Computer Scientist at John Hopkins University - Applied Physics Laboratory and as Chief Technology Officer at Sphere Software Corporation. John is an alumnus of the prestigious University of Maryland, College Park.
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In March 2021, the U.S. National Institute of Standards and Technology (NIST) released Special Publication 500-334, which provides guidance on implementing the technology that allows the use of contac...
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