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Distributed Ledger Workgroup

Business Intelligence, timeliness and efficiency are important to MLS participants.  Whereas the RESO Web API provides a signaling mechanism and the RESO Data Dictionary provides elemental definition, lifecycle events allow information to be consumed in a more natural form.

The purpose of the RESO Distributed Ledger Workgroup is to identify and document property lifecycle events. These events could be recorded in a distributed ledger by the industry participants to support accountability, provide instant notifications and identify rules/patterns that are valuable to real estate professionals. The catalog will use RESO Data Dictionary fields wherever possible and utilizes the RESO Web API wherever possible.

The Workgroup will work closely with other RESO workgroups to maintain alignment with their work.


  • The Distributed Ledger Workgroup meets the 4th Tuesday of every month from  12:00 – 1:00 PM EST.  | JOIN A RESO WORKGROUP!


Distributed Ledger Workgroup Chair – Mark Lesswing, CTO, T3 Sixty & Founder, Lesswing LLC

Mark Lesswing is a Blockchain Entrepreneur and Founder of Lesswing that focuses on Market Development, Asset Management and Supply Chain. He has worked with companies in the real estate industry to prepare them for blockchains and his work includes hands-on efforts, presentations as well as creating executive briefings. Prior to this he was the Senior Vice President and Chief Technology Officer of the National Association of REALTORS.

Education: Lehigh University and obtained a BSIE, Industrial Engineering.

Contact Information – Email: I Office: (630) 788-8658


Distributed Ledger Workgroup Vice-Chair – Ashish Antal, Director of Architecture, MLSListings, Inc.

Ashish Antal was promoted from Director or Technology in July 2018 and has been with MLSListings, Inc. since January 2010.  Prior to this he was the Sr. Software Engineer for RE InfoLink, a division of MLSListings, from September 2005 to December 2009.

Education: Indira Gandhi National Open University, Uptron Academy of Computer Learning and the Centre for Development of Advanced Computing where he obtained a PGD Advanced Computing.

Contact Information – Email: I Office: (408) 874-0245




DLU July 20th, 2020