Best Layer 2 Protocols for Koinly

The next-generation layer 2 solution for Ethereum decentralized applications (dApps) allows developers to leverage their preferred tools while achieving cost-effective scaling for their projects. In this ecosystem, an aggregator functions similarly to a node in the Ethereum network, enabling client software to perform remote procedure calls (RPCs) to interact with an Arbitrum chain via a standard API. Once a client makes a request, the aggregator interacts with the EthBridge to generate transaction results, akin to the operation of an Ethereum node. Although most clients will typically route their transaction submissions through an aggregator for efficiency, it is not a strict requirement for operation. There are no restrictions on the number of aggregators that can be established, nor on who is eligible to serve as one. To enhance processing efficiency, aggregators often consolidate several client transactions into a singular message for submission to the Arbitrum chain. Additionally, Arbitrum features a specialized Sequencer that has the capability to prioritize transaction ordering and provide rapid transaction receipts, further optimizing the user experience. This innovative structure opens up new possibilities for developers looking to enhance their dApps on Ethereum.

Polkadot is an innovative blockchain network designed to support Web 3.0, which aims to create a decentralized and equitable internet where individuals have control over their data, fostering thriving markets through enhanced network efficiency and security. Established in 2016 by Gavin Wood, who previously served as the Co-Founder and CTO of Ethereum, Polkadot addresses key challenges that have hindered the widespread adoption of blockchain technology in recent years. The platform's development toolkit, known as Substrate, was created by Parity Technologies and simplifies the process for developers to create tailored blockchains suited to their specific needs. Additionally, Polkadot facilitates interoperability between various blockchains, making upgrades seamless, and introduces a model of “shared security” that allows developers to prioritize their technological innovations rather than expend resources on assembling a team of operators to manage a new blockchain. This approach not only streamlines the development process but also enhances the overall robustness of the blockchain ecosystem.

ChainX, recognized as the first project to emerge within the Polkadot ecosystem, is dedicated to exploring and implementing advancements in Bitcoin's layer 2 scalability, serving as a digital asset gateway and a relay chain for Polkadot's second layer. Its goal is to facilitate cross-chain asset exchanges, paving the way for innovative developments in Bitcoin Cross-DeFi. With Bitcoin's market capitalization nearing the monumental US$1 Trillion mark, it stands as a cornerstone of the digital currency landscape, holding tremendous potential for evolving blockchain technologies and affirming Bitcoin's role as a leading payment option and an effective medium for value transfer and storage. Many believe that we have only begun to uncover the vast possibilities that Bitcoin offers. ChainX is fervently focused on enhancing and expanding Bitcoin's Layer 2 financial ecosystem, working to foster the flow of Bitcoin's value, broaden opportunities for financial derivatives, and enhance tools for hedging against market fluctuations. By doing so, they aim to unlock even greater potential for users and investors alike.

Polygon is the global leader in blockchain scalability solutions, offering an advanced infrastructure that transforms how money and data move across the internet. Purpose-built for real-time transactions, Polygon enables instant settlement, high throughput (1,000+ TPS), and transaction costs as low as $0.001. With over 5.3 billion transactions processed and $141 billion in transfer volume, it has become the backbone for digital payments, DeFi, and stablecoin ecosystems. Enterprises leverage Polygon’s robust framework to eliminate wire fees, improve liquidity, and ensure compliance—all while maintaining speed and transparency. The network’s aggregation layer, zkEVM, and AggLayer CDK provide developers with modular scalability for any use case—from tokenized assets (RWA) to cross-border payments. Its POL token secures the network and powers staking, governance, and utility functions. With account abstraction, social recovery, and seamless user onboarding, Polygon makes blockchain accessible to the masses. Backed by a thriving ecosystem and proven reliability, Polygon is redefining global payments and decentralized innovation at internet scale.

Ethereum's latest scalability framework ensures rapid transactions alongside efficient smart contracts. Optimism operates as a Public Benefit Corporation (PBC), which is a profit-driven entity established to create societal advantages while maintaining responsible and sustainable practices. This structure compels us to harmonize the financial interests of our shareholders with the welfare of individuals impacted by our actions, all while adhering to a specific "public benefit charter" we have adopted. The core mission of the Company is to improve and secure equitable access to internet public goods through the creation of open-source software. This charter embodies our commitment to the Ethereum community, as we strive to uphold its principles by developing infrastructure that fosters the growth and sustainability of a public goods ecosystem. In doing so, we aim not only to enhance technological innovation but also to cultivate an inclusive environment for all users.

Omni serves as a versatile platform designed for the development and exchange of personalized digital assets and currencies. This software framework operates on the most widely used, thoroughly audited, and secure blockchain: Bitcoin. Transactions conducted through Omni are essentially Bitcoin transactions that unlock advanced capabilities on the Bitcoin Blockchain. Our reference implementation, Omni Core, is an upgraded version of Bitcoin Core, incorporating all Bitcoin functionalities alongside sophisticated features from the Omni Layer. With Omni, creating tokens that represent specific currencies or assets is straightforward, allowing seamless transactions through the Bitcoin blockchain. The unique combination of power and user-friendliness provided by Omni has established it as the foremost token protocol based on Bitcoin. Furthermore, Omni simplifies the process of decentralized crowdfunding, enabling participants to contribute bitcoins or tokens directly to an issuer's address, with the Omni Layer ensuring that the crowdfunded tokens are automatically sent back to the contributor, all without relying on any intermediary. This innovative approach to token distribution enhances trust and efficiency within the crowdfunding ecosystem.