Layer 3 blockchain solutions build upon existing blockchain infrastructure to offer enhanced functionality, scalability, and interoperability. Here are some examples:
Polkadot is a layer 0/1 blockchain protocol that enables the interoperability of multiple blockchains. It achieves this through its relay chain and parachains architecture. Polkadot can be considered a layer 3 solution because it provides advanced features like cross-chain communication, shared security, and scalability through its parachain ecosystem.
Cosmos is another layer 0/1 blockchain platform that aims to create an interconnected network of independent blockchains called "zones." It uses the Tendermint consensus algorithm and Inter-Blockchain Communication (IBC) protocol to facilitate communication and interoperability between different blockchains. Cosmos can be viewed as a layer 3 solution due to its focus on interoperability and scalability.
While Ethereum is primarily a layer 1 blockchain, various layer 2 solutions are being developed to improve its scalability and functionality. Examples include Optimistic Rollups, zkRollups, and Plasma, which offer off-chain computation and aggregation of transactions before submitting them to the Ethereum mainnet, thereby increasing throughput and reducing transaction costs.
These examples demonstrate how layer 3 blockchain solutions aim to address the challenges of scalability, interoperability, and functionality, thereby unlocking new possibilities for decentralized applications and services.
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~ Nesaty