What is scaling? I suppose I've made it a habit to start with this concept in every piece I write, as it's a significant issue among blockchains: to scale or not to scale. Let's look at an example from today's world to better understand this concept: social media platforms. Have you ever wondered how these platforms manage to operate quickly and efficiently when millions of users are watching videos, sharing pictures, and messaging simultaneously? This is the power of scaling. So, how important is this concept in the blockchain world, especially for Ethereum?

I guess there's no one in the blockchain community who hasn't heard of or used Ethereum. If you're a user of Ethereum and its products, you might have often complained about "Gas fees being too high" or "Transactions being too slow." The Ethereum community continuously makes improvements to solve issues related to energy consumption, scaling, transaction costs, and sustainability. These improvements address the issues I mentioned. Thanks to these solutions, Ethereum is evolving into a more sustainable and scalable structure, becoming Ethereum 2.0. As of March 13, 2024, one of the significant upgrades, EIP-4844, also known as Proto-Danksharding, is expected to go live on the Ethereum mainnet.

There are two main components to Ethereum's efforts to increase scalability: Sharding and Rollups. Sharding aims to expand transaction capacity by dividing the network into smaller pieces (shards). Rollups reduce the data load on the network by bundling many transactions into a single transaction. Rollups have the potential to increase the transaction volume on the Ethereum network while reducing gas fees. However, in the current system, the amount of data that rollups need to store on the main chain still constitutes a significant cost in gas fees. The Ethereum team aims to eliminate this issue with the EIP-4844 upgrade. Let's delve a bit deeper.

How Is It Possible to Reduce Data Costs for Rollups?

EIP-4844 introduces a new type of data called "blob" on the Ethereum network, optimizing data storage and transaction costs. "Blobs" allow for the temporary storage of data pieces in the beacon chain for a short period. Blobs are stored on the Ethereum network only temporarily (1-3 months), allowing for more efficient management of data storage capacity. Temporary storage reduces data storage costs on the network. Nodes can automatically delete old or unused data, using their resources more efficiently. This is particularly important for nodes with lower capacities, as it ensures the network can operate sustainably for a broader user base. The temporary storage of blobs guarantees that rollup operators and users have access to the data they need during the transaction verification process. During this time, the data is easily accessible and usable.

In the Ethereum blockchain, each block has a specific size limit. This limitation directly affects the network's transaction capacity and scalability. Data blobs aim to overcome these limitations by storing more data at a lower cost. Approximately 125-kilobyte blobs allow for more data storage on the Ethereum network while reducing the gas costs required for processing and storing this data.

In Ethereum, gas fees are calculated based on how much space a transaction occupies on the network and how much computational power it requires. CALLDATA, carrying transaction data, has a direct impact on gas costs depending on the amount of data it contains. Therefore, optimizing the use of CALLDATA is a significant way to reduce gas costs.

Full-Danksharding: The Next Step in Ethereum's Scalability Journey

The ultimate goal of this approach, when fully realized, is to achieve a vision known as "Full Danksharding." This vision aims to significantly expand the network's data processing capacity by increasing the number of blobs added to each Ethereum block from four to sixty-four.

One of the innovations brought by Full Danksharding is the significant increase in Ethereum block size. For instance, adding four blobs would increase the block size by an extra 512 kilobytes, while six blobs would increase it by 768 kilobytes more. This extra space is reserved only for blob transactions and does not store the data in the traditional block space permanently. This feature aims to increase the Ethereum network's data storage and processing capacity while keeping the computational load on nodes to a minimum.

For Full Danksharding to be successfully implemented, Ethereum needs to integrate two fundamental technologies: Data Availability Sampling (DAS) and Erasure Coding.

DAS ensures that even a portion of the block data is available, maintaining the integrity and security of the network. This reduces the risk of data loss and ensures the network operates more reliably. On the other hand, erasure coding is a method used to recover the original data even in the event of data loss. This technique is critical for maintaining data integrity and increasing the network's resilience.

Proto-Danksharding and its ultimate goal, Full Danksharding, offer modern and innovative solutions to Ethereum's scalability issues. These technological advancements provide the infrastructure needed for the Ethereum network to support more users and transactions. The integration of techniques like DAS and erasure coding improves Ethereum's data processing capacity while keeping the computational load on nodes to a minimum, enhancing the overall performance and security of the network. The future of Ethereum is brighter with these innovations, increasing the potential to revolutionize blockchain technology.

Hello, I'm Aysen. I would be very happy if you could give feedback on my blog. Here are the channels through which you can reach me:

Twitter: https://twitter.com/aysenalahabali

Mail: aysenalahabali@gmail.com

Sources I used while creating my article:

https://domothy.com/blobspace/

https://medium.com/offchainlabs/eip-4844-what-does-it-mean-for-l2-users-5e86ebc4c028

https://www.galaxy.com/insights/research/protodanksharding-what-it-is-and-how-it-works/

In traditional financial systems, all our data, from our transactions to account movements, is stored in the databases of centralized institutions. When we transfer money from our bank account to another, this transaction is recorded and tracked in the bank's database. In this case, the bank can be considered a 'node' where our data is centrally stored and protected (or not protected).

However, the situation is different with blockchain technology. Data is stored and protected by many different nodes across the network, rather than a central authority or institution. These nodes form the fundamental building blocks of the blockchain network, and each holds a copy of all transactions on the network. This significantly reduces the risk of data loss or manipulation compared to centralized systems.

So, the relationship can be explained as follows:

Banks → Database

Blockchain → Node

To better understand the concept of nodes, it's important to emphasize that they are a fundamental part of the blockchain network. Blockchain networks are supported by many nodes distributed around the world. Each node copies all transactions and blocks on the network, so if there is any data loss or manipulation at any point, its accuracy can be verified through other nodes. This makes blockchain technology extremely reliable and transparent. The ease and accessibility of setting up a node on a blockchain are indicators of that blockchain's decentralization. Anyone can set up a node at home.

Nodes in blockchain networks are divided into various types: Archive Nodes, Full Nodes, and Light Nodes.

Archive Node:

Archive Nodes can be considered the 'historians' of the blockchain network. They validate and store all blocks and transactions from the beginning of the blockchain. Specifically, they keep a comprehensive record of all changes, transactions, and smart contract states on the network. This in-depth information provided by Archive Nodes enhances the transparency and accuracy of the network, but it requires significant storage space.

Full Node:

Full Nodes act as the 'guardians' of the blockchain network. They usually store the blockchain's last 120 blocks and independently validate every new transaction and block. This validation process plays a vital role in preventing fraud attempts, such as double spending. Furthermore, Full Nodes apply the consensus rules necessary to maintain the integrity and security of the network. These nodes ensure the correctness and validity of newly added blocks and transactions to the network, enhancing the blockchain's reliability.

Light Node:

Light Nodes can be thought of as the 'summarizers' of the blockchain network. Instead of downloading the full blockchain database, they only download block headers. Block headers contain summary information of transactions, allowing Light Nodes to use much less storage space than a full node. This feature is ideal for devices with limited resources. Light Nodes can request detailed transaction information from Full Nodes as needed. This structure allows Light Nodes to operate quickly and efficiently. However, Light Nodes cannot directly participate in consensus or mine, indicating they cannot directly contribute to the network's security and verification processes.

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In conclusion, the decentralized structure of blockchain technology is maintained through the collaborative work of various node types, such as Archive, Full, and Light Nodes. Each type of node plays a unique and critical role in the security, transparency, and accessibility of the network. Unlike traditional centralized systems, blockchain technology ensures data is securely distributed and protected against manipulation. If you want to get to know this technology closer and be a part of the future, you can contribute to this revolution by setting up a node on blockchain networks. Remember, the strength of blockchain lies in the community that supports it.

Hello, I'm Ayşen. I would be very happy if you could give feedback on my blog. Here are the channels through which you can reach me:

Twitter:* https://twitter.com/aysenalahabali**

Mail:* aysenalahabali@gmail.com*

Source:

https://ethereum.org/developers/docs/nodes-and-clients?source=post_page-----465f9a2e446c--------------------------------

In the real world, we use bridges to travel from point A to point B. Bridges facilitate connection, movement, and communication. Similarly, in the blockchain world, bridges are used to transfer assets from one network to another, allowing for the secure movement of tokens or other digital assets across networks. For example, you can use bridges if you want to transfer assets from the Ethereum network to the Solana network.

Is it possible to exchange cryptocurrency between different blockchains without an inter-blockchain bridge? Yes, it is possible. However, exchanging cryptocurrency between different blockchains without inter-blockchain bridges can be more complex, time-consuming, and sometimes riskier.

Inter-blockchain bridges simplify and automate this process, offering significant conveniences for users. These bridges make asset transfers between different blockchains faster, more secure, and more user-friendly.

In this article, I will discuss the Inter Blockchain Communication (IBC) protocol, which facilitates value and data transfer between blockchains with fundamental approaches and operational mechanisms different from bridges. IBC provides a standard method for inter-blockchain interaction, enabling token transfers, data sharing, and calls between smart contracts across networks. This allows users to transfer assets from one blockchain to another or to conduct transactions between applications on different blockchains. For example, a user can transfer a token from the Ethereum network to another blockchain network that supports the IBC protocol, such as Cosmos. The differences between bridges and IBCs can be described as follows:

Bridges:

• Bridges are usually designed for the transfer of specific assets between two blockchains. For example, an Ethereum-Binance Smart Chain bridge facilitates token transfers only between these two chains.

• Some bridges can be centralized, meaning the security and correctness of transfers depend on the administrators of the bridge. This can pose a potential security risk.

• Bridge solutions are often built around specific tokens or protocols and serve particular use cases.

IBC Protocol:

• IBC is designed to support the transfer of any type of data and value, offering a more general solution that enables broader interactions between different blockchains.

• IBC is a standard protocol for interaction between blockchains. It facilitates the transfer of data and value between any two compatible blockchains.

• IBC uses the consensus mechanisms and security guarantees of blockchains themselves to ensure security and correctness, offering a less centralized approach compared to bridges.

Now that we understand the features and differences between bridges and IBC, let's delve deeper into IBC.

The core structure of the Inter Blockchain Communication protocol primarily consists of two main layers: the Transport Layer and the Application Layer. Besides these, IBC protocol includes additional layers: the Client Layer and the Connection Layer. However, this article will focus only on the two main layers.

1. Transport Layer (Transport, Authentication, and Ordering - TAO): The Transport Layer establishes secure and authenticated communication channels between different blockchains. This layer manages the authentication, transport, and ordering of data packets. Security and correctness are the primary priorities of this layer.

2. Application Layer (APP): The Application Layer operates on top of the transport layer and defines the content of data packets and how these packets should be processed. This layer supports various application protocols and use cases, allowing interactions between different blockchains to be customized and extended.

These layers and components are part of the overall architecture of the IBC protocol and work together to create a secure, flexible, and efficient communication network between blockchains.

IBC uses a series of standards and protocols to enable data and value exchange between different blockchain networks. Here are the basic steps of how IBC works:

1. Channel Setup:

   • Client Creation: The first step involves creating clients on both blockchains that can verify each other's state. These clients track the current block height and consensus state of the opposite blockchain.

   • Connection Creation: A connection is established between the two blockchains. This connection contains the necessary information for both sides to verify each other's consensus states.

   • Channel Creation: A secure communication channel is established. This channel is dedicated to a specific application or protocol and manages all data transfers between the two chains.

2. Data Packet Transfer:

   • Packet Preparation and Sending: A blockchain prepares a data packet to be sent to another chain. This packet contains data packaged according to a specific application protocol.

   • Packet Verification: When the sent packet is received by the recipient blockchain, the packet's integrity and origin are verified. This is done using the previously established client and connection information.

   • Application Layer Processing: After successful verification, the packet is processed by the relevant application layer protocol. This can vary depending on the content of the packet, such as token transfers, smart contract calls, or other application data.

3. Feedback and Confirmation:

   • Sending Back Confirmations: Once the transaction is completed, a confirmation message is sent back to the original sending chain. This indicates whether the transaction was successful or if there were any errors.

   • State Updates: Both chains record transaction-related state updates, providing a reference point for future transactions.

The beauty of the IBC protocol is that it allows different blockchains to interact securely and efficiently while operating on their unique consensus mechanisms and security models. This significantly enhances blockchain interoperability and integration, opening up a wide range of new applications and services.

Technologies like bridges and the Inter Blockchain Communication (IBC) protocol unlock the potential of different blockchain networks to transfer value and data, demonstrating that blockchains can offer more than just cryptocurrencies. They also show how blockchains can interact with each other and the outside world.

Hello, I'm Ayşen. I would be very happy if you could give feedback on my blog. Here are the channels through which you can reach me:

Twitter:* https://twitter.com/aysenalahabali**

Mail:* aysenalahabali@gmail.com*

Source:

https://tutorials.cosmos.network/academy/3-ibc/1-what-is-ibc.html

The 'Blockchain Trilemma' refers to the problem of balancing the three fundamental features of a blockchain. These features form the basic principles of blockchain; however, in practice, it seems almost impossible to perfectly balance these three properties. When evaluating blockchains, assessing how well these three features are balanced is common. Let's now detail these three features:

Decentralization: Decentralization is one of the cornerstones of blockchain technology. It means a system that operates without dependency on any central authority or control point. In traditional financial systems, institutions manage and control everything from customer assets to personal information. Blockchain technology, in contrast, completely reverses this situation. However, this decentralized structure can lead to a decrease in transaction speed. Each transaction cannot be completed until it is confirmed by multiple validators in the network, which slows down the process. At this point, understanding the consensus mechanisms used in blockchain can help you better grasp decentralization.

Scalability: Scalability refers to the capacity of blockchain networks to effectively manage growing volumes of transactions. A blockchain's ability to continue functioning without disruption, whether in high or low usage, can only be addressed through scalability. When it comes to scalability, the TPS (Transactions Per Second) values of projects become prominent. Different blockchain networks exhibit different TPS values.

Security: Blockchains, being open-source, can be susceptible to security vulnerabilities. Therefore, in blockchain, Security means protecting data, ensuring the accuracy of transactions, and being resilient against malicious attacks.

The solution to the blockchain trilemma involves combining these three elements in a balanced manner. Each aspect, when examined independently, reveals its weak points and potential areas for improvement. However, balancing these three fundamental features harmoniously is one of the biggest challenges blockchain networks face.

Source:

https://medium.com/certik/the-blockchain-trilemma-decentralized-scalable-and-secure-e9d8c41a87b3

https://academy.shrimpy.io/post/what-is-the-blockchain-trilemma

https://www.merkeziyetsizhaber.com/blockchain-trilemma/