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16 lines
1.5 KiB
TeX
16 lines
1.5 KiB
TeX
\section{Related Work}
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\label{sec:related}
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\textbf{Lux threshold infrastructure.} Lux Network provides the foundational libraries used by \TChain{}. The \texttt{lux-universal-threshold-signatures} library \cite{lux-threshold-sigs} implements FROST and CGGMP21 at the primitive level; \texttt{lux-mchain-mpc} \cite{lux-mchain-mpc} pioneered multi-chain MPC on Lux but operated as an external service. \TChain{} embeds these primitives directly into a VM.
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\textbf{Fireblocks MPC.} Fireblocks \cite{fireblocks2023mpc} offers institutional MPC-CMP as a managed service. While production-proven, it introduces a trusted third party. \TChain{} achieves comparable guarantees without custodial trust assumptions.
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\textbf{Lit Protocol.} Lit \cite{lit2023threshold} distributes threshold signing across a dedicated node network, requiring separate infrastructure. \TChain{} reuses the validator set, reducing cost and aligning incentives.
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\textbf{THORChain TSS.} THORChain \cite{thorchain2023tss} uses GG20 for cross-chain swaps. \TChain{} improves on this with identifiable abort (absent in GG20) and the Composition Theorem for multi-protocol share reuse.
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\textbf{DFINITY threshold ECDSA.} The Internet Computer \cite{dfinity2022tecdsa} implements chain-key threshold ECDSA at the subnet level. \TChain{} follows a similar chain-native philosophy but extends it to FROST, TFHE, and BLS via the \LSS{} Composition Theorem.
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%% --------------------------------------------------------------------------
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