Art is Everywhere.
Be a Collector.

Jason Rosenstein

CEO

Jason Rosenstein is an entrepreneur, developer, and builder. Drawn by the disruptive potential of blockchain technology in 2011, Jason founded his first company building powerful machines to generate cryptocurrencies.

As a previous founder of two companies and an experienced developer, Jason finished his degree in computer science with specialization of cryptography at NYU. Utilizing his expertise in system architecture, financial systems, and project management, he has co-founded Portion, where he is tapping into the power of blockchain technology to reimagine the online auction house.

Peter Engleman

COO

Peter holds a MBA from NYU Stern with specializations in: finance, business analytics, and management. With over 10 years of experience in the technology sector, Peter has initiated, developed, and led new divisions, teams, and products. These efforts assisted in over $100M in venture funding and multiple successful exits. Peter’s experience and passion for entrepreneurship has enabled him to serve as a mentor to a number of startups through his involvement with accelerators and non­profit organizations.

Michael Colson

Blockchain Developer

Michael first discovered Bitcoin in 2011 and started mining and trading shortly thereafter. His enthusiasm of the protocol & for software development lead him to discover Ethereum, and he now develops decentralized applications on the platform using Solidity and web3.

Jared Robin

VP, Growth

Jared leads growth and business development by building partnerships within the Creator Community. He has over 10 years of experience in fashion, media, eCommerce, marketplace development, and logistics. Jared has experience working for and building venture backed technology startups, such as Granify, backed by Peter Thiel, Swipecast, a digital fashion marketplace, and co-founded Deux Hommes, an internationally recognized digital fashion publication that featured a curated list of emerging fashion designers.

Vlad Panov

CTO

Vlad is a finance and technology professional with over 12 years of experience in top tier financial institutions (JPMorgan, Morgan Stanley, Citigroup). He developed a large number of software and data solutions for internal operations and clients while managing diverse teams of corporate professionals in high-pressure environments. Vlad co-founded a fintech startup for regulatory and compliance application which was successfully incubated into Techstars London with POCs for Barclays Capital and other organizations.

Lydia Moon

VP, Marketing

Lydia is an accomplished luxury and lifestyle marketing strategist with experience in brand management and campaign developments. Previously at Sotheby’s, Lydia led the auction house’s jewelry and watch categories, overseeing all integrated cross-platform marketing activities such as content partnerships, advertising and promotion. Prior to Sotheby’s, Lydia spearheaded business development and marketing for watch brands Maurice Lacroix and Glycine at DKSH Luxury and Lifestyle North America Inc.

Angela Redai

VP, Strategy

Angela spent many years as an attorney advising art collectors, galleries, dealers, artists, investors, entrepreneurs and creatives. With a hybrid background in art law, IP, and corporate deals focused on new media and tech, she has a deep understanding of the workings of the art market—and how to effectively navigate its unique nuances, risks and pitfalls. A creative thinker and strategist, Ange is passionate about art, and enthusiastic about Portion's applications of blockchain tech in disrupting the space.

Tal Cohen

Tal is a serial entrepreneur and blockchain enthusiast. In 2013, he co-founded and led Sirin Labs, one of the most exciting luxury and technology start-ups of the decade, which developed Solarin, the most technologically advanced, secure, and luxurious mobile phone of its time. In 2017, he left Sirin to set up Compass Blockchain Solutions, a NY-Tel Aviv-Hong Kong global blockchain advisory group.

Christopher Vroom

Christopher is the Founder and CEO of CollectorIQ, a New York-based asset management platform for fine art and collectibles. He also founded Art+Culture Projects, a publisher of high-quality, limited-edition prints that are produced for museums and cultural institutions around the world. Previously, he founded Artspace.com, the world’s leading marketplace for fine art, sold to Phaidon Press in 2014. As a patron of the arts, Vroom founded of the New York-based non-profit, Artadia, which for about 20 years has provided nearly $7 million in support to artists from the United States.

Barbara Strongin

Barbara is a 38-year veteran of the Global Fine Art Auction Industry where she held a number of executive level positions.  served as the Director of Administration and a lecturer for Sotheby’s Institute of Art for ten years. Prior to that, she served as the Senior Vice President/Director of Operations for Christie’s Auction House over the course of twenty-six years where she was responsible for the day-to-day operations for Christie’s flagship NY auction site. She is a licensed auctioneer in New York, and as a senior auctioneer for Christie’s, was tasked with auctioneering a multitude of sale categories. She also assisted the New York City Consumer Affairs Department in rewriting several regulations governing auctions.

Nimrod May

Nimrod’s extensive hi-tech experience includes serving as: VP of marketing at Gett, CEO at RDSeed investment fund, and an investor and CMO at Woo.io. In 2017, he joined Sirin Labs, which has concluded the 4th largest token crowdsale in history, raising nearly $160M. The company is now working on FINNEY,the blockchain smartphone with an embedded cold storage crypto-wallet that promises to give users safe, reliable, and uncomplicated access to its blockchain.

Jason Bailey

Jason Bailey is an entrepreneur and researcher exploring the intersection of art and tech. He is best known for his work on his analytical art database and for his writings and interviews on blockchain and art which can be found on artnome.com. Jason has an MFA in digital media, a BA in studio art, and two decades' experience working in the cutting edge of tech. Jason has worked with over a dozen companies in the tech sector on marketing strategy and enjoys advising mission-driven art/tech startups on their growth, branding, and communications. Prior to his current position at Boston-based ML/AI startup Tamr, Jason was responsible the global GTM strategy for HP's Big Data Division. As a thought leader in art and tech, Jason a sought-after speaker, most recently having moderated panels on digital art and and provenance at Christie's "Art + Tech summit: Exploring the Blockchain.

Dermot McCormack

Dermot operates as an innovator at the intersection of content, technology, and new distribution. As a corporate strategist, he also leads change through engendering collaboration, teamwork, and excellence—driving large corporations while building consensus around game-changing strategies. He has inspired large content teams while building multi-platform distribution and monetization strategies, and other types of projects supporting major global brands. Dermot has held senior executive roles at Viacom, AOL and Cablevison and has founded several startups from Flooz.com to SNKRINC.

Thomai Serdari

Dr. Thomaï Serdari, a strategist in luxury marketing and branding, holds her PhD in Art History and Archaeology from NYU Institute of Fine Arts. She heads Brand(x)Lux, a brand consultancy, and teaches at New York University’s Stern School of Business. At Stern, she teaches MBA students about luxury marketing, branding, and retail.

Alan Ket

Alan Ket is an arts professional with over 20 years of experience in publishing, advertising, auctions, and fashion. He has been at the forefront at the intersection of street culture, art, and music launching publishing companies, fashion brands, and consumer products. As an arts consultant he has worked with art institutions and corporations in the development of products and arts programming to increase audience growth, engagement, and sales. He is an advocate for the arts as a board member of the Brooklyn Arts Council and director of the GGA gallery at the Wynwood Walls in Miami.

Chris Boundikas

Chris’ roots come from Wall Street, where he was a prop trader before the crash of 2009. He then turned to Bitcoin and traded it in its infancy on the Canadian Cavirtex Exchange. He co-founded a cryptocurrency mining farm called CoinDriller based in Michigan, and has permanently moved to the Caribbean island of Anguilla, where he is spearheading a major fintech transformation for the nation. His regulated ICO consulting firm, Enigma Blockchain Inc., is very active in the artificial intelligence and ICO space.

Lenise Logan

As an Art Advisor and Exhibitions Producer, Lenise has been immersed in the Auction House and Art World for over 15 years. She has worked with some of the worlds’ most successful Auctioneers’ Operations and Logistics departments at companies such as Christie’s, Sotheby’s, and Phillips, and has been responsible for selling some of the most valuable works of art in the world. She has worked with prolific collectors such as Swizz Beatz and the Dean Collection. She’s produced exhibitions in Los Angeles for SWOON, in New York and Miami for Jonathan Mannion at Marlborough Gallery, and at the inaugural ‘No Commission’ in 2015. Lenise is a senior advisor and principal at Kalpa Art Advisors, where she supports community driven art collecting. Before this, Lenise served on the White House’s Act Art Advisory Board for Justice and Contemporary Art.

Lisa Skye Hain

Lisa is the CEO and co-founder of Primary, a New York City-based co-working and shared office space featuring an array of amenities designed to help people be their best selves at work. Having spent a lifetime amidst thriving small businesses, Lisa managed two restaurants in Danny Meyer’s hospitality empire, worked on a top residential and commercial real estate sales team with The Corcoran Group, built one of the world’s largest and most prosperous BNI (Business Network International) chapters based in Manhattan, and served as WeWork’s founding Head of Community, overseeing operations for its first two locations in New York City.

Robert Michael

Rob Michael is an early adopter of Bitcoin and other blockchain technologies. He attended Rutgers University where he studied economics and pre-medical sciences. He began his career in capital markets for the catastrophic risk industry before taking an entrepreneurial route. Today, he acts as an advisor, leaning on his experience building businesses and consulting start-ups in blockchain technology, social networks, and e-commerce.

Derrick Lewis

Derrick has over ten years of experience in entrepreneurial, c-level, operational, human capital, technology, and management consulting roles working with diverse organizations in the public and private sectors.