Callan, also known as "Sap" is the Co-Founder of Threshold Labs, the managing team behind Threshold Network's tBTC, a trust-minimized bridge enabling native Bitcoin in DeFi.

Why you should listen

Threshold Network is a decentralized infrastructure protocol that leverages threshold cryptography to provide privacy and access control services on public blockchains. It was formed through the merger of two projects, Keep and NuCypher, with the aim of enabling secure and decentralized custody and data privacy. One of its core offerings is tBTC, a decentralized bridge that allows users to bring their Bitcoin onto Ethereum and other EVM-compatible networks in the form of an ERC-20 token that is fully backed 1:1 by BTC.

tBTC is designed to address the limitations of custodial wrapped Bitcoin products, such as WBTC, which rely on centralized entities to hold users' BTC. Instead, tBTC uses a network of randomly selected node operators that collectively manage custody through threshold signature schemes. This structure ensures that no single party can access or move the underlying BTC, enhancing security and decentralization. The latest version, tBTC v2, introduces a scalable and permissionless model, progressively shifting control from human intermediaries to protocol-based guarantees.

Bitcoin DeFi—or BTCFi—is an emerging segment of decentralized finance that aims to bring Bitcoin's liquidity into smart contract ecosystems. Historically, Bitcoin has been underutilized in DeFi due to its limited scripting capabilities and incompatibility with platforms like Ethereum. Bridges like tBTC are key to unlocking Bitcoin's potential in DeFi, enabling BTC holders to participate in lending, yield farming, liquidity provision, and collateralized borrowing—all while retaining exposure to Bitcoin. By offering a decentralized, trust-minimized bridge, Threshold Network positions itself as a foundational layer in this growing ecosystem.

Supporting links

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Threshold Network

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