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50 lines
2.5 KiB
TeX
50 lines
2.5 KiB
TeX
\section{Comparison with Contemporaries}
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\label{sec:contemporaries}
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%% ============================================================================
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\begin{table}[h]
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\centering
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\small
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\begin{tabular}{lllll}
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\toprule
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\textbf{System} & \textbf{Exec parallelism} & \textbf{Consensus DAG?} & \textbf{Conflict source} & \textbf{State model} \\
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\midrule
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Ethereum & none & linear & -- & EVM (account) \\
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Aptos & Block-STM & linear & r/w sets & Move (resource) \\
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Sui (Mysticeti) & object-type & DAG (Narwhal) & object IDs & Move (object) \\
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Solana & account-lock & linear & static lockset & account \\
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Monad & OCC + pipeline & linear & r/w sets (post-hoc) & EVM \\
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Fuel & UTXO-parallel & linear & UTXO inputs & UTXO \\
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Aleph Zero & none & DAG (AlephBFT) & -- & substrate \\
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\midrule
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\textbf{Lux C-Chain (DAG-EVM)} & Block-STM & \textbf{DAG} & \textbf{r/w sets} & EVM \\
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\textbf{Lux X-Chain} & DAG-native & \textbf{DAG} & UTXO inputs & UTXO \\
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\textbf{Lux Z-Chain (DAG-Z)} & parallel verify & \textbf{DAG} & nullifiers & ZK-UTXO \\
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\textbf{Lux Q-Chain} & attest-parallel & \textbf{DAG+Quasar} & PQ stamps & attestation \\
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\bottomrule
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\end{tabular}
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\caption{Lux versus contemporary parallel / DAG blockchains. Lux is the
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only production system in which (a) the execution engine's conflict graph
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is the consensus DAG and (b) this shape holds uniformly across EVM,
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UTXO, ZK-UTXO, and PQ attestation workloads.}
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\label{tab:contemporaries}
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\end{table}
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The critical distinction: Sui's Narwhal DAG carries \emph{transaction
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availability}, not the execution conflict graph. The DAG is collapsed to a
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total order by Bullshark/Mysticeti and then executed sequentially (or
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parallel by object-type, separately). Aptos' Block-STM operates inside a
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linear block: if block $B_n$ is not yet finalised, no transaction of
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$B_{n+1}$ can execute even if entirely independent. Monad stacks
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pipelining on linear consensus; DAG-level parallelism is not available.
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Solana's account-lock model is static (declared in the tx), not derived
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from execution footprints, and does not compose with DAG consensus.
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Lux is the only production design in which the same conflict predicate
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drives intra-block execution (Block-STM) \emph{and} inter-block finality
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(nebula DAG) — yielding a uniform model across all chains with a natural
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parallelism axis (EVM, DEX, UTXO, ZK, Oracle, Relay).
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%% ============================================================================
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