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zeekay
cb1155764d
19-page paper (luxcover format) covering: - SSB profile + diaspora corridor + why now (Honeycoin / VALR comparables) - Partnership hypothesis (Simplici.io + Lux Network + SF Private Pay) - Africa-at-Home concentric-rings deployment model - Shariah-to-Lux primitive mapping (Murabahah, Mudharabah, Musharakah, Ijaarah, Sukuk, Takaful as typed on-chain objects with AAOIFI-aligned invariants) - 5 augmentation workstreams (Shariah-native onboarding, on-chain Shariah contracts, diaspora corridor, drought-linked parametric Takaful, trade-finance digitisation) - Commercial + compliance posture + phased roadmap
37 lines
1.7 KiB
TeX
37 lines
1.7 KiB
TeX
\section{Settlement Flow}
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\label{sec:settlement}
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%% =====================================================================
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The full settlement lifecycle for a securities trade on a regulated EVM L1:
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\begin{enumerate}[nosep]
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\item \textbf{Order.} User submits a trade order via the ATS API.
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\item \textbf{Match.} The CEX matching engine (Lux CEX) matches
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the order against the order book.
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\item \textbf{Record.} The matched trade is recorded in PostgreSQL
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(source of truth for trade data).
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\item \textbf{Queue.} The trade is queued in the
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\texttt{pending\_settlements} table.
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\item \textbf{Sign.} A settlement cron (30s interval) picks up
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pending trades, constructs the on-chain transactions
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(mint/burn of SecurityToken), and initiates MPC signing.
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\item \textbf{MPC.} The user's device share ($\mathbf{s}_1$) and
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the operator's share ($\mathbf{s}_2$) cooperate to produce
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a threshold signature.
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\item \textbf{HSM.} The HSM co-signs the transaction, attesting
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that the signing environment is uncompromised.
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\item \textbf{Broadcast.} The signed transaction is broadcast to
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a regulated EVM L1.
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\item \textbf{Confirm.} The chain confirms the transaction. The
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indexer picks up the event and updates the read cache.
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\item \textbf{Notify.} The user receives a settlement confirmation.
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\end{enumerate}
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If the chain is temporarily unavailable, trades continue to match and
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record in PostgreSQL. The settlement cron retries pending settlements
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until chain connectivity is restored. The database is the durable
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record; the chain is the authoritative record once settlement confirms.
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%% =====================================================================
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