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papers/lp-checkpoint-anchor/sections/10-comparison-with-prior-art.tex
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\section{Comparison with Prior Art}
\label{sec:comparison}
\begin{center}
\begin{tabular}{lccccc}
\toprule
& \textbf{LP-Anchor} & \textbf{Ceramic} & \textbf{KERI} & \textbf{Radicle} & \textbf{Nostr} \\
\midrule
PQ-safe finality & Yes (Q-Chain) & No & No & No & No \\
On-chain storage & 2 slots/anchor & Tx log & Off-chain & Tx log & None \\
Batching & Verkle tree & Merkle tree & KEL & Git tree & N/A \\
Verify latency & $<200$ms & Seconds & Seconds & Seconds & N/A \\
Gas/anchor & 25.4k & $\sim$50k & N/A & $\sim$30k & N/A \\
\bottomrule
\end{tabular}
\end{center}
\noindent
Ceramic anchors CIDs to Ethereum via a Merkle tree of stream tips,
batching every 30 minutes. KERI maintains key event receipt logs off-chain
with witness infrastructure. Radicle and Gitopia anchor Git commit hashes.
Nostr event IDs are self-certifying but have no chain finality.
LP-Anchor is the only design with post-quantum finality guarantees and
sub-second verification latency.
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