
Data Availability: Why It Matters and How It Actually Works
Data Availability defines whether a blockchain can be independently verified — yet it’s one of the most misunderstood components in modern architectures. This article gives a clean, source-driven explanation of DA across Bitcoin, Ethereum (EIP-4844), Celestia’s DAS model, and EigenDA’s restaking-based validation. No assumptions. No marketing. Only verifiable architectural facts.

Data Availability: Why It Matters and How It Actually Works
Data Availability defines whether a blockchain can be independently verified — yet it’s one of the most misunderstood components in modern architectures. This article gives a clean, source-driven explanation of DA across Bitcoin, Ethereum (EIP-4844), Celestia’s DAS model, and EigenDA’s restaking-based validation. No assumptions. No marketing. Only verifiable architectural facts.

Monolithic vs Modular Blockchains — Technical Architecture Analysis
SummaryMonolithic blockchains implement all four core functions (execution, consensus, settlement, data availability) inside a single L1 protocol and a single validator set. Modular blockchains separate these functions into layers: one layer specializes in consensus + DA, another in execution (rollups / app-chains), and optionally a third in settlement.ArchitectureCore functionsBoth architectures rely on the same foundational components:Execution — transaction processing and state transitions...

Monolithic vs Modular Blockchains — Technical Architecture Analysis
SummaryMonolithic blockchains implement all four core functions (execution, consensus, settlement, data availability) inside a single L1 protocol and a single validator set. Modular blockchains separate these functions into layers: one layer specializes in consensus + DA, another in execution (rollups / app-chains), and optionally a third in settlement.ArchitectureCore functionsBoth architectures rely on the same foundational components:Execution — transaction processing and state transitions...