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papers/lux-data-availability/sections/10-kzg-ceremony-compatibility.tex
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\section{KZG Ceremony Compatibility}
\label{app:ceremony}
Lux-DAS is compatible with the Ethereum Powers-of-Tau ceremony output. The ceremony
produced an SRS of degree 4{,}096 in the BLS12-381 curve. Since Lux-DAS requires SRS
degree equal to $2k$ (the extended matrix dimension), any $k \leq 2{,}048$ is supported
directly. For larger $k$, a supplementary ceremony or a hash-based fallback is required.
The SRS points are stored in a binary format compatible with the Ethereum consensus specs
\texttt{trusted\_setup.json}, and loaded at node startup with integrity verified against the
published ceremony transcript hash.