CIP-0164? | Ouroboros Linear Leios - Greater Transaction Throughput

CIP-0164/SUMMARY.md

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+# Ouroboros Leios Summary
+
+> [!NOTE]
+>
+> This summary provides a comprehensive overview of Ouroboros Leios. For the
+> complete technical specification, see [CIP-0164](README.md).
+
+## What is Ouroboros Leios?
+
+Ouroboros Leios is a revolutionary consensus protocol designed to dramatically
+increase Cardano's transaction throughput while maintaining the security
+guarantees of Ouroboros Praos. It's an optimistic protocol that operates
+alongside the existing Praos chain, enabling Cardano to support the transaction
+volumes needed for long-term economic sustainability.
+
+## The problem it solves
+
+Cardano's current throughput limitations pose a significant challenge as the
+ecosystem grows. With increasing transaction volumes and complex decentralized
+applications, the network needs a fundamental enhancement to accommodate future
+demand without compromising security.
+
+## How It Works: The 5-Step Process
+
+### 1. **EB Proposal**
+
+When a stake pool wins slot leadership, it creates:
+
+- A standard **Ranking Block (RB)** - the normal Praos block
+- An optional **Endorser Block (EB)** - containing references to additional
+  transactions
+
+### 2. **EB Distribution**
+
+The EB and its referenced transactions are rapidly distributed across the
+network using optimized diffusion protocols.
+
+### 3. **Committee Validation**
+
+A randomly selected committee of stake pools validates the EB within a specific
+voting period, ensuring network consensus.
+
+### 4. **Certification**
+
+If enough committee members vote (≥75% threshold), the EB becomes certified and
+ready for inclusion.
+
+### 5. **Chain Inclusion**
+
+Certified EBs are applied to the ledger just before their certifying RB, but the
+EB transactions themselves are not registered on-chain as separate blocks.
+
+## Key Characteristics
+
+### **Massive Throughput Increase**
+
+- Achieving 30-65x improvement over current mainnet (140-300 TxkB/s, equivalent
+  to ~100-200 TPS depending on average transaction sizes)
+- Each EB can reference significantly more transactions than standard blocks
+- Configurable via protocol parameters to optimize for different network
+  conditions
+- Simulations demonstrate substantial throughput improvements
+
+### **Opportunistic Inclusion**
+
+- Not all EBs get certified due to timing constraints
+- This ensures sufficient network diffusion periods for Praos security
+  guarantees
+- Balances throughput with security requirements
+
+### **Security Preservation**
+
+- Maintains all Praos security guarantees
+- Committee-based validation ensures network consensus
+- Careful timing constraints prevent security vulnerabilities
+
+## Economic Benefits
+
+### **Balanced Scalability**
+- increased transaction capacity with moderate increase in confirmation time (45-60 seconds)
+- Supports sustainable rewards as Reserve depletes, requiring ~36 TPS by 2029
+- Maintains economic sustainability
+- Minimal added complexity through few new protocol elements
+
+### **Future-Proof Design**
+
+- Designed to support Cardano's long-term growth
+- Configurable parameters allow adaptation to changing needs
+- Preserves existing economic incentives
+
+## Implementation Strategy
+
+### **Backward Compatibility**
+
+- Operates alongside existing Praos chain
+- No disruption to current network operations
+- Gradual rollout possible
+
+### **Protocol Parameters**
+
+The system includes configurable parameters for:
+
+- **Timing parameters**: Control validation and diffusion periods
+- **Size parameters**: Determine EB capacity and committee sizes
+- **Security parameters**: Maintain safety guarantees
+
+## Research and Development
+
+This specification presents the first version of the Ouroboros Leios protocol
+family. For comprehensive research documentation, development history, and
+additional technical resources, visit the Leios Innovation R&D site at
+[leios.cardano-scaling.org](https://leios.cardano-scaling.org).
+
+## What's Next?
+
+Ouroboros Leios represents a significant step forward in blockchain scalability.
+The protocol is designed to:
+
+- Support Cardano's growing ecosystem
+- Enable complex decentralized applications
+- Maintain security and decentralization
+- Provide economic sustainability for long-term growth
+
+---
+
+Read the complete [CIP-0164 specification](README.md) for in-depth technical
+documentation, protocol artifacts, security analysis, and implementation
+details.