Nathan Doctor

Investor

58 past transactions

Printr

Pre Seed Round in 2025
Printr is a chain-abstracted memecoin launchpad that instantly prints and trades memes.

Vatn Systems

Seed Round in 2024
Vatn Systems develops affordable autonomous underwater vehicles capable of operating in cooperative swarms. The company focuses on advanced navigation software that performs effectively even in environments where GPS, vision, and communication systems are compromised, thereby reducing hardware costs. By leveraging this technology, Vatn Systems supports various applications in underwater exploration and defense, allowing clients to expand their operational capabilities in challenging underwater conditions.

H3X

Series A in 2024
H3X Technologies, established in 2020 by Jason Sylvestre, Eric Maciolek, and Max Liben, specializes in manufacturing electric propulsion systems for aviation. Their innovative products are designed to be lightweight yet powerful, targeting sustainable aviation and urban air mobility markets. H3X's unique machine combines the electric motor and inverter into a single unit, aiming to reduce emissions in aviation, marine, and heavy industrial applications while enhancing aircraft performance through retrofits.

Holograph

Venture Round in 2024
Holograph is a company founded in 2020 and based in Los Angeles, specializing in non-fungible token (NFT) technology. It develops software that allows NFTs to be minted with enhanced standards, ensuring their integrity across different blockchains. Holograph's decentralized and encrypted ledger supports secure cryptocurrency mining and offers services that include counterfeit prevention, carbon offsetting, and secure smart contracts. Additionally, the company provides permanent storage for NFT metadata, continuous royalties, and copyright registration, facilitating a reliable environment for individuals to mine and trade digital currency.

Gunzilla Games

Initial Coin Offering in 2024
Gunzilla Games is an independent video game studio dedicated to creating AAA games that emphasize player engagement and immersive experiences. The company is known for its innovative approach, utilizing advanced technology to develop games that transcend traditional gaming boundaries. Currently, Gunzilla Games is working on 'Off The Grid,' a cyberpunk battle royale game that incorporates highly customizable weapons and cutting-edge 3D scanning technology. Through its commitment to delivering deeply engaging gaming experiences, Gunzilla Games strives to redefine how players interact with and enjoy video games.

Medallion

Series A in 2023
Medallion is a New York City-based company in the media and entertainment sector, launched in 2020. It has developed a blockchain-based platform aimed at connecting artists with their fans. This platform enables users to create digital environments and foster communities while facilitating the exchange of digital goods. By leveraging this technology, Medallion assists artists in enhancing fan engagement, gaining actionable insights, and maximizing their economic potential.

Elixir

Series A in 2023
Elixir is a decentralized protocol that facilitates algorithmic market-making across both centralized and decentralized exchanges. It is designed to enhance composability for integrations, allowing retail users to engage in market-making activities and potentially earn profits. Additionally, Elixir provides projects and trading venues with access to active market-making services for their trading pairs, thus promoting liquidity and efficiency in the market. The protocol emphasizes computational security, ensuring that transactions and market activities are conducted safely and reliably.

Membrane Labs

Series A in 2023
Membrane Labs is a fintech firm that provides institutional digital asset services for OTC transactions.

D3

Seed Round in 2023
D3 its goal is to transform the domain name industry by effortlessly connecting Web 1-3.

Intuition

Seed Round in 2023
Intuition is a decentralized identity company based in San Juan, United States, specializing in the development of infrastructure, tools, and applications that facilitate the creation of an open and flexible knowledge graph. The company enables users to build, explore, curate, and own a communal knowledge graph by providing attestations on various subjects. Through its innovative offerings, Intuition enhances the quality and accessibility of social knowledge, positioning itself as a key player in the decentralized information landscape.

Hourglass

Seed Round in 2023
Hourglass is an operator of a financial marketplace intended to trade locked-up DeFi assets.

Hourglass

Seed Round in 2023
Hourglass operates within the blockchain industry, specializing in liquid staking services for locked assets within Frax and Convex ecosystems. Its core offering involves creating time-bound tokens (TBTs) that represent staked assets with specific lock-up periods, enabling users to trade these tokens and transfer ownership, thereby managing risk and enhancing investment flexibility.

insrt finance

Pre Seed Round in 2023
insrt finance is a protocol that acts as a decentralized financial intermediary for non-fungible digital assets. They combine fractionalization, integration with a lending primitive, and a robust risk management system to unlock NFT finance for all.

Cypherock

Seed Round in 2022
Cypherock is a company that specializes in developing security storage solutions for blockchain-based digital assets and private keys. It offers a hardware wallet designed as a mobile case, which allows users to securely manage their cryptocurrency investments. This innovative product enhances the security of digital assets by mitigating risks associated with software vulnerabilities and interruptions. By providing a physical system for the safe custody of crypto assets, Cypherock aims to offer users a reliable means of protecting their investments in the evolving landscape of blockchain technology.

Primitive

Series A in 2022
Primitive is a developer of an innovative software platform focused on the Ethereum decentralized finance ecosystem. The company has created Arbiter, an open-source software framework that facilitates crypto transaction simulation. Additionally, Primitive offers a crypto asset management platform that provides users with non-custodial options protocols for any Ethereum asset, allowing them to earn upfront returns. By emphasizing open-source solutions, Primitive aims to empower users in the rapidly evolving landscape of digital finance.

Tessera

Series A in 2022
Tessera's mission is to curate the most extraordinary collective ownership experiences produced by the greatest creators, builders, and leaders. Tessera's vision is a world where anyone can have the opportunity to collectively own and govern things they value, without reliance on central gatekeepers to execute decisions and actions on their behalf.

UnicornDAO

Seed Round in 2022
UnicornDAO is a platform focused on the development of content in the Web3 space, specifically targeting the empowerment of female and LGBTQ NFT creators. It aims to redistribute wealth and visibility within the NFT ecosystem by providing opportunities for initiatives led by these underrepresented groups. The platform facilitates the collection and incubation of builders in Web3, allowing creators to access financial tools and resources in a decentralized and community-driven environment. Through its initiatives, UnicornDAO seeks to foster equality and support the growth of diverse voices in the rapidly evolving digital landscape.

Mara

Seed Round in 2022
Mara is a platform for Africans to learn through, while leveraging, blockchain technology to build digital wealth. The company empowers Africans to develop financial literacy so they can take the greatest possible advantage of the numerous opportunities available in the digital economy. The Mara wallet allows users to easily buy, sell, earn, withdraw, and protect their assets - including cryptocurrencies such as Bitcoin, Ethereum, and Mara Token - in real time. Mara was founded in 2021 and is located in Nairobi, Kenya.

Sturdy Finance

Seed Round in 2022
Sturdy Finance is a decentralized lending network designed to give users access to high-yield lending and interest-free borrowing. The business receives stake incentive payments by using the collateral provided by borrowers in decentralized finance protocols including Yearn, Convex, and Lido. Users benefit from having no interest and no borrowing costs because these staking rewards are used to pay interest to depositors.

Quantum Art

Series A in 2022
Quantum Art is the first platform focused solely on photographers and their work, curating and dropping NFT collections and making NFT photography accessible for both artists and collectors.

Heroes of Mavia

Seed Round in 2022
Heroes of Mavia is an NFT based MMO Strategy game developed by Skrice Studios. The game takes place in a fantasy-themed island called Mavia, where players build bases on plots of land and battle neighboring bases and armies to earn in-game resources, such as RUBY.

Sarcophagus

Venture Round in 2022
Sarcophagus is an autonomous decentralized application (dApp) designed to function as a dead man's switch, ensuring that certain actions can be activated or deactivated in the event that the human operator becomes incapacitated. Built on the Ethereum and Arweave blockchains, Sarcophagus is a fully open-source project developed by a global team of software developers, crypto enthusiasts, and security experts. The application facilitates the creation of crypto tokens and offers opportunities for digital currency farming, allowing users to earn incentives. Despite its innovative approach, Sarcophagus has not yet undergone an audit.

Paragons

Pre Seed Round in 2022
Paragons operates a blockchain-based gaming community platform designed to provide users with exposure to various assets through a diversified portfolio. The company functions as both an economic and social partner, allowing all holders to engage in ownership by participating in a decentralized autonomous organization (DAO). This structure enables users to expand their opportunities through strategic partnerships within the non-fungible token (NFT) and decentralized finance (DeFi) communities.

Hop

Seed Round in 2022
Hop is an application that offers rollups, tokens, rewards conversion, and send-and-receive rewards solutions.

Mara

Seed Round in 2021
Mara is a platform for Africans to learn through, while leveraging, blockchain technology to build digital wealth. The company empowers Africans to develop financial literacy so they can take the greatest possible advantage of the numerous opportunities available in the digital economy. The Mara wallet allows users to easily buy, sell, earn, withdraw, and protect their assets - including cryptocurrencies such as Bitcoin, Ethereum, and Mara Token - in real time. Mara was founded in 2021 and is located in Nairobi, Kenya.

Skyryse

Series B in 2021
Skyryse, Inc. is an air mobility company that focuses on developing advanced helicopters and aircraft, primarily serving sectors such as emergency and support services, public transport, and urban planning. Founded in 2016 and headquartered in El Segundo, California, the company has created FlightOS, a comprehensive hardware and software operating system designed to enhance the safety and accessibility of general aviation. FlightOS provides a unified interface that allows pilots to operate various types of aircraft—both rotorcraft and fixed-wing—with the same controls, effectively minimizing pilot fatigue and simplifying the flying experience. With a training requirement of only a few hours, FlightOS enables pilots to safely fly different aircraft configurations, whether from the cockpit or remotely, thereby significantly improving flight safety and emergency management capabilities.

Greywing

Seed Round in 2021
Greywing is a technology company that specializes in maritime data solutions. It has developed a digital platform called CRY4, which serves as a predictive reporting tool that delivers insights related to voyages, vessels, and routes. By employing data-driven AI solutions, Greywing identifies operational gaps within the maritime sector, helping to enhance efficiency and reduce costs. The platform automates critical processes such as crew matrix planning and pairings, allowing maritime operators to access valuable data when needed. Through these innovations, Greywing aims to save time and resources for its users, ultimately transforming how the maritime industry manages data and operations.

Lore

Seed Round in 2021
community capital network

4K.com

Seed Round in 2021
4K.com is a company that has developed a web-based NFT marketplace aimed at bridging ownership and authenticity between physical products and the digital realm. The platform specializes in creating NFTs that are backed by tangible assets, allowing users to verify ownership of items such as clothing, shoes, watches, consumer electronics, and video games. By leveraging decentralized finance, 4K.com transforms physical goods into NFTs, introducing innovative payment systems and protocols that facilitate financial transactions. This enables investors to trade more efficiently, access mortgage loans, and earn yields on their assets, thereby enhancing the marketplace's utility and appeal.

Primitive

Venture Round in 2021
Primitive is a developer of an innovative software platform focused on the Ethereum decentralized finance ecosystem. The company has created Arbiter, an open-source software framework that facilitates crypto transaction simulation. Additionally, Primitive offers a crypto asset management platform that provides users with non-custodial options protocols for any Ethereum asset, allowing them to earn upfront returns. By emphasizing open-source solutions, Primitive aims to empower users in the rapidly evolving landscape of digital finance.

Wilder World

Initial Coin Offering in 2021
Wilder World is a community-owned, decentralized platform based in San Francisco, California, that specializes in the creation and sale of non-fungible tokens (NFTs) for digital artists. Founded in 2019, the company operates an online marketplace that allows artists to sell their work without incurring platform fees. Wilder World's immersive 3D metaverse is powered by a native NFT platform and a dynamic token system that rewards participants, fostering an environment where new artists can effectively monetize their art. Utilizing blockchain technology, Wilder World ensures the uniqueness and authenticity of its digital collectibles, creating a transparent and secure ecosystem for both creators and collectors.

FRACTAL

Seed Round in 2021
Fractal is a financial technology company that provides digital assets and blockchain adoption services. They also develop tools for institutional investors to access decentralized financing.

Talyn Air

Seed Round in 2021
Talyn Air, Inc. is a manufacturer of electric vertical takeoff and landing (eVTOL) aircraft designed for both passenger and cargo transport. Established in 2019 by Jamie Gull and Evan Mucasey, the company is headquartered in Los Angeles, California. Talyn Air's innovative aircraft system features a unique design that enables the separation and recombination of vehicles in flight, thereby optimizing operational efficiency and minimizing energy waste.

H3X

Seed Round in 2021
H3X Technologies, established in 2020 by Jason Sylvestre, Eric Maciolek, and Max Liben, specializes in manufacturing electric propulsion systems for aviation. Their innovative products are designed to be lightweight yet powerful, targeting sustainable aviation and urban air mobility markets. H3X's unique machine combines the electric motor and inverter into a single unit, aiming to reduce emissions in aviation, marine, and heavy industrial applications while enhancing aircraft performance through retrofits.

Sturdy Finance

Venture Round in 2021
Sturdy Finance is a decentralized lending network designed to give users access to high-yield lending and interest-free borrowing. The business receives stake incentive payments by using the collateral provided by borrowers in decentralized finance protocols including Yearn, Convex, and Lido. Users benefit from having no interest and no borrowing costs because these staking rewards are used to pay interest to depositors.

Weel Autonomy

Seed Round in 2021
Weel Autonomy manufactures autonomous and self-driving electric bicycles. The company was founded in 2018 by Justin Corbett and David Hansen.

Lore

Seed Round in 2021
community capital network

Tokemak

Venture Round in 2021
Tokemak is a blockchain-based fintech platform focused on generating sustainable liquidity for the tokenized economy. It offers an app-based solution that facilitates the trading of digital assets, including tokens and cryptocurrencies, while ensuring security and a seamless trading experience. The platform features a generalized liquidity aggregator for decentralized exchanges, allowing users to trade freely in a secure environment. By employing token reactors, Tokemak aims to reduce emissions associated with liquidity provision and enhance control over liquidity in the ecosystem.

Terra

Secondary Market in 2020
Terra is a price-stable cryptocurrency designed for mass adoption. It builds financial infrastructure for the next generation of decentralized applications. Terra is backed by Luna, a decentralized asset that derives its value from transaction fees collected on the Terra network. Much like the moon stabilizes the earth’s rotation, Luna is Terra's eternal guardian of stability.

Skyryse

Debt Financing in 2020
Skyryse, Inc. is an air mobility company that focuses on developing advanced helicopters and aircraft, primarily serving sectors such as emergency and support services, public transport, and urban planning. Founded in 2016 and headquartered in El Segundo, California, the company has created FlightOS, a comprehensive hardware and software operating system designed to enhance the safety and accessibility of general aviation. FlightOS provides a unified interface that allows pilots to operate various types of aircraft—both rotorcraft and fixed-wing—with the same controls, effectively minimizing pilot fatigue and simplifying the flying experience. With a training requirement of only a few hours, FlightOS enables pilots to safely fly different aircraft configurations, whether from the cockpit or remotely, thereby significantly improving flight safety and emergency management capabilities.

Akash Network

Venture Round in 2020
Akash Network is a pioneering company that has established the first distributed peer-to-peer marketplace for cloud computing, offering a cost-effective and efficient alternative to traditional centralized cloud services. By harnessing open-source technology, Akash enables developers to launch decentralized applications, ranging from financial services and gaming to data visualizations and blockchain infrastructure, significantly reducing costs compared to major cloud providers. The platform capitalizes on the vast pool of underutilized cloud capacity available in millions of global data centers, allowing users to buy and sell cloud services seamlessly. Furthermore, Akash’s infrastructure simplifies the deployment and management of software applications across various cloud environments, catering to enterprises and software innovators seeking to optimize operational efficiency while minimizing expenses.

Futureswap

Seed Round in 2020
Futureswap is a company based in San Francisco, California, that specializes in developing a decentralized futures exchange platform utilizing blockchain technology. The platform operates on a non-custodial basis, enabling users to engage in the trading of crypto futures contracts. Futureswap employs an automated market-making (AMM) algorithm to facilitate these transactions, enhancing liquidity and efficiency in the trading process. With a focus on decentralized finance, Futureswap aims to provide a secure and user-friendly environment for trading perpetual futures in the cryptocurrency market.

Authereum

Seed Round in 2020
Authereum is a San Francisco-based company that has developed a wallet and decentralized application (dapp) login solution aimed at simplifying the onboarding process for users of Ethereum-based applications. By utilizing contract-based accounts, Authereum enhances key management functionalities, allowing users to seamlessly convert fiat currency into cryptocurrency without the need for Know Your Customer (KYC) verification. This approach targets non-technical users, making it easier for them to engage with decentralized apps on the Ethereum network. Through its innovative platform, Authereum seeks to provide a familiar and user-friendly experience for those new to blockchain technology.

Futureswap

Seed Round in 2019
Futureswap is a company based in San Francisco, California, that specializes in developing a decentralized futures exchange platform utilizing blockchain technology. The platform operates on a non-custodial basis, enabling users to engage in the trading of crypto futures contracts. Futureswap employs an automated market-making (AMM) algorithm to facilitate these transactions, enhancing liquidity and efficiency in the trading process. With a focus on decentralized finance, Futureswap aims to provide a secure and user-friendly environment for trading perpetual futures in the cryptocurrency market.

Weel Autonomy

Pre Seed Round in 2019
Weel Autonomy manufactures autonomous and self-driving electric bicycles. The company was founded in 2018 by Justin Corbett and David Hansen.

RightMesh

Initial Coin Offering in 2018
RightMesh is a developer of a software-based mobile mesh networking platform that facilitates last-mile connectivity by enabling direct peer-to-peer connections between various devices. Its innovative mesh networking protocol allows users to connect to critical services, information, and each other without relying on traditional internet infrastructure. The company's patent-pending technology creates mobile mesh networks by establishing and managing device-to-device connections, particularly among Android phones and IoT devices. Additionally, RightMesh incorporates a cryptocurrency protocol that incentivizes individuals to share their mobile device resources, such as bandwidth and storage, thereby increasing global connectivity and enhancing access for those who lack reliable internet access. Developers can leverage RightMesh's platform and SDK to integrate its technology into their applications, promoting international communication and commerce.

Keep

Venture Round in 2018
Keep Network, established in 2017 and based in George Town, Cayman Islands, specializes in creating interactive links between public blockchains and private data. The company's core product, tBTC, is a decentralized bridge enabling users to securely and anonymously transfer their Bitcoin to the Ethereum network, facilitating participation in decentralized finance (DeFi) platforms. Keep Network's technology, an off-chain container for private data, allows smart contracts to leverage the full power of public blockchains while maintaining data privacy.

Ocean Protocol

Initial Coin Offering in 2018
Ocean Protocol is a decentralized data exchange platform founded in 2017 and based in Singapore. The protocol facilitates the sharing and monetization of data through advanced blockchain technology, ensuring that transactions are safe, secure, and transparent. By connecting data providers and consumers, Ocean Protocol creates an accessible marketplace for valuable data. It empowers developers and curators to build innovative data services while maintaining control, transparency, and compliance for all participants, ultimately fostering a collaborative ecosystem for data exchange.

Synthetix

Initial Coin Offering in 2018
Synthetix is a decentralized synthetic asset issuance protocol based in Australia, established in 2017 by Kain Warwick. Built on the Ethereum blockchain, it facilitates derivatives trading in decentralized finance (DeFi) by enabling the creation of synthetic assets that provide exposure to real-world currencies, commodities, stocks, and indices. The platform offers unique financial instruments such as perpetual futures and options markets, allowing users to trade synthetic forms of assets with infinite liquidity. Synthetix operates a peer-to-contract trading system and utilizes a distributed collateral pool, ensuring transparency and accessibility for customers seeking on-chain exposure to various decentralized assets.

Ren

Initial Coin Offering in 2018
Ren is an open protocol that facilitates the transfer of value between different blockchains, enhancing interoperability within decentralized finance (DeFi). Its primary product, RenVM, supports multi-chain operations and allows for large-volume cryptocurrency trading through hidden order books. This infrastructure is designed to enable traders to execute private and cross-chain trades while minimizing market impact. Founded in 2007 and based in Singapore, Ren aims to provide a decentralized dark pool exchange protocol that allows for atomic swaps between cryptocurrency pairs on the Bitcoin and Ethereum blockchains, ensuring that order details remain confidential.

Ocean Protocol

Seed Round in 2018
Ocean Protocol is a decentralized data exchange platform founded in 2017 and based in Singapore. The protocol facilitates the sharing and monetization of data through advanced blockchain technology, ensuring that transactions are safe, secure, and transparent. By connecting data providers and consumers, Ocean Protocol creates an accessible marketplace for valuable data. It empowers developers and curators to build innovative data services while maintaining control, transparency, and compliance for all participants, ultimately fostering a collaborative ecosystem for data exchange.

MakerDAO

Venture Round in 2017
MakerDAO is a decentralized autonomous organization that operates on the Ethereum blockchain, specializing in the development of a stablecoin known as Dai. Founded in 2014 and headquartered in Santa Cruz, California, with additional offices in Copenhagen, Denmark, MakerDAO aims to minimize the price volatility of Dai by utilizing collateralized debt positions and autonomous feedback mechanisms. The company enables users to access a low-volatility, collateral-backed cryptocurrency, promoting financial inclusion and stability. In addition to Dai, MakerDAO has introduced MKR, a token that serves multiple purposes within its ecosystem, including governance and system recapitalization. Through its innovative approach, MakerDAO seeks to provide a decentralized digital currency that maintains its purchasing power, making financial services accessible to users worldwide.

Theta Network

Funding Round in 2017
Theta Network, developed by Theta Labs, is a decentralized video delivery platform that leverages blockchain technology and cryptocurrency to incentivize users to share their excess bandwidth for relaying video streams. This peer-to-peer network operates on top of existing streaming applications and networks, enabling low-latency live content streaming from platforms like YouTube, Facebook, Twitch, and Twitter. By rewarding users for their contribution, Theta Network reduces content delivery costs and drives incremental revenues for video platforms. The company, based in Cupertino, California, has attracted strategic investments from prominent corporations and venture capital firms.

Synthetix

Pre Seed Round in 2017
Synthetix is a decentralized synthetic asset issuance protocol based in Australia, established in 2017 by Kain Warwick. Built on the Ethereum blockchain, it facilitates derivatives trading in decentralized finance (DeFi) by enabling the creation of synthetic assets that provide exposure to real-world currencies, commodities, stocks, and indices. The platform offers unique financial instruments such as perpetual futures and options markets, allowing users to trade synthetic forms of assets with infinite liquidity. Synthetix operates a peer-to-contract trading system and utilizes a distributed collateral pool, ensuring transparency and accessibility for customers seeking on-chain exposure to various decentralized assets.

0x

Seed Round in 2017
0x is a developer of an open protocol that enables decentralized exchanging of tokens on the Ethereum blockchain. The protocol serves as a standard framework that facilitates peer-to-peer transactions and promotes interoperability among decentralized applications that incorporate exchange capabilities. By providing a mechanism for users to seamlessly convert a diverse range of assets into cryptographic tokens, 0x aims to enhance the accessibility and efficiency of digital asset trading in a decentralized manner.

0x

Initial Coin Offering in 2017
0x is a developer of an open protocol that enables decentralized exchanging of tokens on the Ethereum blockchain. The protocol serves as a standard framework that facilitates peer-to-peer transactions and promotes interoperability among decentralized applications that incorporate exchange capabilities. By providing a mechanism for users to seamlessly convert a diverse range of assets into cryptographic tokens, 0x aims to enhance the accessibility and efficiency of digital asset trading in a decentralized manner.

Bancor

Initial Coin Offering in 2017
Bancor, based in Zug, Switzerland, specializes in the creation and management of cryptocurrencies, known as Smart Tokens™. These tokens are designed with built-in convertibility, allowing users to buy and sell them directly through their wallets using a simple, low-cost process. Bancor's innovative token "Connector" method facilitates continuous liquidity and automatic price discovery for these tokens, eliminating the need for traditional cryptocurrency exchanges. The company's platform enables the creation of user-generated cryptocurrencies, fostering a network of interconnected tokens with standardized liquidity solutions.

Cosmos Network

Initial Coin Offering in 2017
Cosmos is a versatile project focused on creating a network of distributed ledgers aimed at addressing persistent challenges within the cryptocurrency and blockchain sectors. It provides a container-first monitoring system that operates independently of specific infrastructures or operating systems, allowing users to connect all containers in their data centers to a unified dashboard. This dual functionality not only enhances monitoring capabilities but also facilitates better integration and communication among various blockchain networks, fostering a more interconnected ecosystem.
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