DAG Consensus

Definition ∞ DAG consensus refers to a method of achieving agreement among network participants in distributed ledger technologies that utilize a Directed Acyclic Graph (DAG) structure instead of a traditional blockchain. In a DAG, transactions confirm each other, creating a web of interconnected entries rather than a linear chain. This approach aims to offer higher transaction throughput and potentially faster confirmation times by allowing for parallel processing and eliminating the need for miners in some designs. The consensus is reached through the cumulative validation of transactions by subsequent entries.
Context ∞ DAG consensus mechanisms are frequently discussed in relation to scalability solutions for distributed ledger technologies, offering an alternative to traditional blockchain consensus models. News often highlights projects adopting DAG structures to address limitations in transaction speed and cost. Debates frequently revolve around the security properties and finality guarantees of different DAG-based consensus algorithms compared to established proof-of-work or proof-of-stake systems.

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→Byzantine Fault Tolerance

→Dynamic Stake

→ACL2 Theorem Prover

Formal Verification Secures Dynamic Stake DAG Consensus

Formally verifying DAG-based BFT consensus with dynamic stake establishes provable nonforking, foundational for adaptive blockchain architectures.

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→Vote Mechanism

→Distributed Systems

→Hybrid Architectures

Angelfish Unifies Optimal Blockchain Throughput and Latency

Angelfish introduces a hybrid consensus protocol, seamlessly blending leader-based efficiency with DAG-based scalability, promising high throughput and low latency for decentralized systems.

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→Protocol Design

→Byzantine Fault Tolerance

→Common Core

Asymmetric Trust DAG Consensus for Robust, High-Performance Decentralized Systems

This research introduces a novel asymmetric gather protocol, enabling DAG-based consensus mechanisms to operate efficiently under diverse, subjective trust assumptions, fostering more resilient and scalable blockchains.

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→Quorum Size

→Censorship Resistance

→Message Complexity

Trusted Components Enable Scalable Censorship-Resistant DAG Consensus

Fides introduces a novel DAG-based BFT consensus protocol, leveraging Trusted Execution Environments to significantly enhance scalability and censorship resistance.

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→DAG Consensus

→Liveness Properties

→Blockchain Architecture

Composable Formal Verification Secures DAG Consensus Protocols with Reusable Proofs

This research introduces a novel framework for formally verifying DAG-based consensus protocols, significantly enhancing their security and accelerating development through proof reuse.

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→DAG Consensus

→Transaction Throughput

→Byzantine Agreement

Odontoceti: Ultra-Fast DAG Consensus with Two-Round Commitment

Odontoceti pioneers a DAG-based consensus achieving two-round transaction commitment, dramatically enhancing scalability and latency by strategically balancing fault tolerance for future blockchain architectures.

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→DAG Consensus

→Concurrent Block Proposal

→MEV Vectors

DAG Consensus Introduces Novel Frontrunning Attacks Requiring Architecture-Specific Mitigation

The analysis of DAG-based systems reveals three new frontrunning attack vectors, proving high-throughput architectures introduce complex, unmitigated MEV risk.

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→Protocol Specification

→DAG Consensus Protocols

→Partial Order

Compositional Formal Verification Secures Complex DAG Consensus Protocols

This framework modularizes DAG consensus proofs into reusable components, dramatically reducing verification effort and ensuring robust protocol safety.

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→Byzantine Fault Tolerance

→Security Assurance

→Distributed Computing

Compositional Formal Proofs Secure DAG Consensus Protocols Systemically

A new compositional framework provides mathematically rigorous, reusable safety proofs for complex DAG-based consensus, fundamentally securing high-throughput decentralized systems.

→Protocol Correctness

→DAG Consensus

→System Integrity

Compositional Formal Verification Secures DAG Consensus Protocol Architectures

A new compositional framework using TLA+ achieves reusable formal verification for DAG consensus, halving proof effort and ensuring robust safety assurances for next-generation architectures.