June 9, 2026 - Fidesium

Abraham Polishchuk

Abraham Polishchuk is Co-Founder and CTO of Fidesium, the UK smart contract security firm he co-founded with Greg Bock in March 2023. He spent fifteen years leading development teams and computing actuarial risk on large data sets in real time, writing and auditing smart contracts along the way. He writes most of Fidesium's published engineering work, including the Adrena and Sumvin audit case studies and the quarterly platform updates. He is based in London.

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Fidesium audit of Sumvin, a soulbound identity protocol on Sei

Fidesium × Sumvin: Auditing a Soulbound Identity Protocol on Sei

June 9, 2026 No Comments

Fidesium’s latest customer, Sumvin, is a soulbound ERC-721 identity protocol. Our engagement covered the full Solidity codebase, the UUPS upgrade path, and the Safe-based governance

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Abraham Polishchuk

Fidesium × Sumvin: Auditing a Soulbound Identity Protocol on Sei

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