25+ years of experience in the software and IT industry as a developer, engineer, product manager, CTO, CEO and entrepreneur. BS degree in Electrical and Electronics Engineering from the Bogazici University. Prior to Inventuna Ersin co-founded KodA, reported by ICT500 as one of the top ten software companies in Turkey, and market leader in Document Capture, Imaging and Records Management software and services sectors. Ersin worked as the Chief Software Architect and Lead Developer in KodA, and has been studying and experimenting with the blockchain technology with a special focus on NFT, document/records management implementations, and consensus mechanisms since 2017. He is the author of Super-Rational Attack, and the anchor to iceberg problem in PoW and PoS on the Cryptography mail-list.