61 lines
1.7 KiB
Markdown
61 lines
1.7 KiB
Markdown
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# ADR-0005: Multi-Layer Settlement Architecture
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## Status
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Accepted
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## Context
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The DBIS system requires settlement across multiple dimensions:
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- Multiple sovereign banks (33 SCBs)
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- Multiple asset types (fiat, CBDC, commodities, securities)
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- Multiple settlement modes (RTGS, atomic, T+1)
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- Cross-chain operations
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- Real-time and batch processing
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## Decision
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Implement a multi-layer settlement architecture:
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1. **Instant Settlement Network (ISN)**: Real-time atomic settlement
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2. **Global Settlement System (GSS)**: Four-layer architecture (Sovereign, DBIS Master, Smart Clearing, Finality)
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3. **Global Atomic Settlements (GAS) Network**: Multi-dimensional atomic settlement
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4. **Omega-Layer**: Final settlement layer for reality-spanning coherence
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5. **Cross-Chain Settlement**: Atomic swaps across different chains
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## Consequences
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### Positive
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- Supports multiple settlement modes
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- Atomic settlement guarantees
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- Cross-asset settlement capability
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- Scalable architecture
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- Finality and irreversibility
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### Negative
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- Complex architecture
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- Multiple systems to maintain
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- Potential for coordination overhead
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### Risks
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- Settlement failures across layers
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- Performance at scale
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- Complexity in debugging
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## Alternatives Considered
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1. **Single Settlement Layer**: One settlement system
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- Pros: Simple
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- Cons: Cannot handle all requirements
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2. **Multi-Layer Architecture**: Chosen approach
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- Pros: Flexible, comprehensive, supports all use cases
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- Cons: More complex
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## Implementation
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- ISN: `src/core/settlement/isn/`
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- GSS: `src/core/settlement/gss/`
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- GAS: `src/core/settlement/gas/`
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- Cross-Chain: `src/core/settlement/cross-chain/`
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## References
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- ISO 20022 Settlement Standards
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- Real-Time Gross Settlement (RTGS) Systems
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