Led · Seed · Mar 2026

Founded in December 2024, Eureka Labs builds Ethereum blocks with added execution logic it calls "programmable blocks," enabling capabilities such as intra-block credit, state-aware pre-computation, execution-time external data access, and deterministic transaction placement. The company operates within Ethereum’s Proposer-Builder Separation architecture and aims to make blocks active execution environments rather than passive containers of transactions. Eureka’s business model collects fees from transactions included in the blocks it builds. By number of blocks built it has become the fourth-largest Ethereum block builder, though its market share is around 1.5% compared with the three largest builders. The team is about 12 people, is based in Tel Aviv, and recently opened an additional research and development site in Poland; the company is hiring for technical roles across both locations.

Participated · Series A · Jun 2024

Fhenix develops a Layer 2 for Ethereum that enables confidential smart contracts via fully homomorphic encryption (FHE). The company released the initial version of its testnet, Helium, which lets developers deploy confidential smart contracts and encrypt all or part of their applications. Fhenix aims to bring privacy and confidentiality features to Ethereum applications through its FHE-powered stack. The startup plans to use the new funding to expand operations and accelerate development efforts. Financially, Fhenix closed a $15M Series A and has raised a total of $22M to date. The company is based in Tel Aviv and is focused on advancing its testnet and developer adoption. Fhenix provides a confidential blockchain powered by fully homomorphic encryption (FHE) that enables encrypted smart contracts and encrypted computation while allowing developers to use Solidity and familiar Ethereum tooling. The company offers fhEVM, which lets Ethereum developers build encrypted smart contracts and perform encrypted computation of data. fhEVM was originally developed by Zama and integrated into the Fhenix Network through a strategic partnership. Fhenix launched a private devnet in July 2023 and intends to bring its network into a public testnet called "Renaissance" in the first half of 2024. The company plans to use the $7M Seed to support ecosystem application development and to fund the public testnet launch. Led by CEO Guy Itzhaki and based in Tel Aviv, Fhenix aims to bring encrypted‑data computation to smart contracts, transactions and on‑chain assets.

Participated · Seed · Nov 2023

Taproot Wizards is focused on advancing OP_CAT, a Bitcoin improvement proposal its founders say could enable Ethereum-like smart contract functionality via covenants. The group plans to use the funding to build an ecosystem of applications that leverage OP_CAT for permissionless programmability, including lending and trading while preserving self-custody. Taproot Wizards previously sold a collection of 3,000 NFT-like pieces called "Quantum Cats" about a year ago to drum up support for OP_CAT. The project says it has been attempting to "meme OP_CAT back into existence" and frames the feature as the "missing piece" for Bitcoin programmability. The proposal was originally included in Bitcoin's code by Satoshi Nakamoto but removed over concerns such as DoS risks, and many developers remain wary of reintroducing it. The group positions its work under a vision to "make Bitcoin magical again." Taproot Wizards is an Ordinals-based NFT collection on Bitcoin inspired by a decade-old Reddit wizard meme, with a limited mint of 2,121 wizards. As of the article, 2,106 (99.3%) have been inscribed to the blockchain, but fewer than 1% — just 20 Ordinals — have been distributed, and the team is intentionally pacing releases. Co-founders Udi Wertheimer and Eric Wall emphasize community-driven activities (a “wizard school,” tattoos, videos and other participation) and a mission to "bring innovation back to Bitcoin." The project raised $7.5 million in a round led by Standard Crypto and declined to disclose a valuation. Funds will be used to rebuild Bitcoin’s “wizard village,” compete with other chains like Ethereum and Solana, and pursue brand and infrastructure opportunities for a more dynamic Bitcoin ecosystem. The article places Taproot Wizards within broader Ordinals momentum: Ordinals launched in December 2022, inscriptions hit 40.4 million, and Bitcoin was the second-largest blockchain by NFT sales (~$163M in the past 30 days).

Led · Seed · Feb 2023

Ironblocks offers an end-to-end blockchain security platform that automates proactive threat detection and acts to stop hackers in real time before funds reach attackers' wallets. The product targets Web3 platforms, DeFi protocols, bridges, market makers, and other digital asset projects. The company says its platform will soon enable teams to instantly take preventative measures. Ironblocks is led by CEO Or Dadosh and CTO Assaf Eli. The company recently raised $7M and intends to use the funds to accelerate development and expand its team across engineering, sales, and marketing. It also plans to support a number of product launches and partnerships that will soon be announced.

Participated · Equity · Oct 2022

Sovryn is a Bitcoin-native, decentralized trading and lending platform that enables permissionless, non-custodial and censorship-resistant trading by ensuring users hold the keys to their bitcoin. The platform offers spot and margin trading, borrowing and lending, and liquidity provision across investment pools built on bitcoin as the reserve currency. Sovryn emphasizes individual self-sovereignty and financial autonomy and is led by CEO Edan Yago. The company said it will use the new funding to expand its global financial operating system. Operational metrics disclosed include $1,552,421,305 in total spot traded volume and $112,131,176 in total margin traded volume. Sovryn reports $322MM+ in total borrowed and lent volume, over $214M in lending activity, and almost 50,000 individual wallets. Sovryn is a Bitcoin-based DeFi protocol that aims to bring decentralized financial tools and sovereignty to the Bitcoin ecosystem. The project focuses on building transparent, incorruptible financial software managed by a global community of contributors rather than a single company. Sovryn’s leadership emphasizes decentralisation and security as core principles for Bitcoin trading. The protocol recently agreed a $9M investment from a consortium of partners to support its development and growth. The token SOV will begin trading first on the Sovryn platform before appearing on other exchanges. Project leaders expect strategic partners to help adopt and integrate software with the Sovryn protocol and extend DeFi benefits to traditional finance. Sovryn launched a lending and derivatives market on the RSK Bitcoin sidechain, positioning itself as a decentralized platform for trading and lending bitcoin. The project went live with $2.1 million in backing, a symbolic amount representing Bitcoin’s total supply. Greenfield One led the funding round, with contributions from Collider Ventures and Monday Capital. Sovryn deployed on RSK to leverage its smart contract layer and merge-mining security, which the team says lets it offer comparable or better functionality than centralized services. The project plans to launch a governance token modeled on Compound Finance’s approach, with an SOV token sale targeted for Q1 2020. Sovryn is the second DeFi platform on RSK following Money on Chain, and its launch is presented as part of a broader push to bring Ethereum-style DeFi products to Bitcoin via sidechains.