# Celestia Crypto Review By [Jaden](https://paragraph.com/@jaden) · 2023-12-08 --- [Celestia crypto](https://coinlaunch.space/projects/celestia/) is a modular blockchain that solves scalability problems by decoupling execution from consensus. It features light nodes, bridge nodes, and full storage nodes. This network allows anyone to launch a chain they have complete sovereignty over, and it eliminates the scalability barriers that hinder innovation within the blockchain space. Its technology also unlocks secure cross-chain interoperability. **Consensus** ------------- Many blockchain networks are constrained by scalability issues. Their expansion is limited by state bloat, which burdens the process of verifying posted data against the chain’s ledger. Celestia solves this problem by decoupling execution from consensus, allowing dApp developers to focus on their implementation layer or layer-2 rollup, while Celestia handles the consensus and data availability layers. This is possible by using data availability sampling, which allows light nodes to verify the validity of block data without downloading the full block. By conducting multiple rounds of random sampling, light nodes can reach a verification confidence level above 99%. This modular approach also provides the foundation for inter-blockchain communication, facilitating a new era of blockchain utilities that serve one another rather than being dependent on their own unique technical requirements. As a result, the project’s success is expected to trigger a massive wave of interconnected blockchains that are able to share data. This will be a significant step forward for the blockchain ecosystem, and it will allow developers to create new types of applications. **Rollups** ----------- Celestia is a modular blockchain architecture that allows developers to create their own blockchains. It supports a number of different layers, including consensus and data availability. Its sampling solution for data availability eliminates the bottleneck in Ethereum scalability. Its design also enables the creation of new blockchains with minimal overhead, while maintaining secure interoperability with other blockchains. A new type of blockchain called a rollup is designed to offload some of its work to a layer 1 like Celestia. This approach enables it to reduce its transaction fees and make them more affordable for end users. Celestia’s sampling technology and the Optimistic Tendermint algorithm make it a great choice for this type of blockchain. Unlike monolithic blockchains that attempt to do everything, rollups focus on specific functions. For example, they use a proof-of-stake system to validate transactions and earn rewards. This means they can bootstrap new blockchains much faster than Ethereum or Solana. They also provide a higher level of transaction throughput than traditional blockchains. **Data Availability Sampling (DAS)** ------------------------------------ The data availability layer of a blockchain is critical to its security. However, monolithic chains face a major scalability bottleneck when it comes to ensuring that the data for a block has been published. This is because it is impossible for normal nodes to download all of the transaction data of a monolithic chain in order to verify blocks. Celestia resolves this scalability issue by decoupling execution from consensus and implementing a technology called data availability sampling (DAS). This enables resource-limited light nodes to verify the block headers using a fixed sample of the data. The more light nodes that perform this sampling the greater the probability that all of the block data has been published. In turn, this enables modular chains to interoperate seamlessly. To prove the availability of a chunk of the block, erasure coding is applied to it. This enables light nodes to verify the data by using any portion of the extended chunk, resulting in high confidence that all of the block data has been published. --- *Originally published on [Jaden](https://paragraph.com/@jaden/celestia-crypto-review)*