Founder, RareSkills
Jeffrey Scholz is the founder of RareSkills. Public RareSkills materials describe him as a former Yahoo senior engineering manager who built a video machine-learning team, earned two AI patents, and holds graduate training in computational theory from Columbia University. RareSkills teaches advanced Solidity, DeFi codebases, smart contract auditing, and zero-knowledge topics, with a cohort model built around direct feedback and active recall.
These notes summarize public roles, published work, and subject matter experience relevant to wallet security, DeFi risk, and crypto market research.
RareSkills identifies Scholz as its founder and instructor for advanced Solidity training. The Advanced Solidity + DeFi Bootcamp is built for blockchain engineers, technical founders, CTOs, and engineering leaders who already have Solidity and Foundry experience.
RareSkills lists course work on ERC-20 interaction patterns, Solidity arithmetic, vault pricing, accumulator accounting, ERC-4626-style vaults, lending protocols, Morpho, Compound V2, and Uniswap V2 mechanics.
RareSkills and interview profiles describe his prior Yahoo work as leading video machine-learning engineering, with two AI patents, top-10 machine-learning competition results, and Columbia graduate study in computational theory or theoretical computer science.
Public interviews emphasize deliberate developer upskilling, code review, and structured feedback as the training model that shaped RareSkills.
RareSkills public materials also associate Scholz with The RareSkills Book of ZK, extending the profile beyond Solidity into zero-knowledge education for blockchain engineers.
These Scroll Wallet resources are attributed to this author profile for clearer editorial accountability and topical expertise.
An Ethereum wallet recovery guide covering account abstraction, social recovery, recovery-service costs, user mistakes, and Scroll Wallet restore flow.
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Read ArticleApril 11, 2026A practical guide to crypto wallet checks in 2026 covering balance verification, compliance context, fee comparison, fraud detection, and secure self-custody workflows.
Read ArticleApril 10, 2026A practical Scroll Network wallet guide for Ethereum users covering L2 architecture, fee savings, key security controls, and setup best practices.
Read ArticleApril 9, 2026Learn how XRP paper wallets work in 2026, including offline key storage, legal and tax context in the US, core risks, and modern wallet alternatives.
Read ArticleFebruary 15, 2026Recently, there has been confusion across blockchain media around market cycles and Ethereum’s long-term direction. In this update, we explain why we still see strong longevity in Ethereum as a critical foundation. At the same time, we outline why full dependency on one framework is not our target architecture. Scroll will continue to build native compatibility where it creates clear user and ecosystem value. In parallel, we will keep extending independent layers that improve flexibility and resilience for future product growth.
Read ArticleFebruary 13, 2026We are announcing our decision to custody in-house digital assets through Coinbase Custody Trust Company, LLC. Secure storage has become a central concern across the industry, especially as institutional standards continue to rise. Our custody direction reflects a stronger commitment to controlled risk and transparent asset management. This move supports stricter operational controls while preserving the flexibility our platform requires. We want the community to understand exactly how we are securing critical assets and why these controls matter.
Read ArticleResource ArticleDiscover the best ICP wallet in 2026 - comparison of hot and cold wallets, fees, US regulation, security risks, and how Scroll Wallet leads in ICP support.
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