The Layer 2 Networks on Bitcoin Are Early Stage Compared to Those on Other Blockchains

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Scalability represents one of the most significant challenges to the adoption of blockchain technology, and achieving it typically involves compromises when it comes down to decentralization or security. Even if Bitcoin is decentralized and secure, it can only process seven transactions per second, with each block being added every ten minutes. Popular solutions for solving the blockchain trilemma don’t zero in on the base layer of the blockchain. Working in the second layer is a more effective method for enhancing scalability while preserving the decentralization and security of the main chain, which remains immutable. Learn how to buy Bitcoin P2P and set up a non-custodial wallet for the full-node experience. 
The Lightning Network was proposed in January 2015, and in January 2018, it was launched on the mainnet. It’s a decentralized network that uses micropayments to scale the blockchain’s capacity, allowing users to make immediate transactions with meager fees. As a Layer 2 protocol, the Lightning Network enables high-speed processing while periodically settling account balances. The lack of scalability in Layer 1 blockchains like Bitcoin is apparent, so Layer 2 solutions have emerged to enhance the efficiency of the network using unconventional approaches. They improve transaction processing rates, periods, and fees by reducing the use of the underlying blockchain. 

A Layer 2 Network Is Built to Have Integrated Functionality with The Base Blockchain 

According to the blockchain trilemma, a blockchain can give priority to only two features, whether decentralization, security, and scalability. Even after so many years, Bitcoin still struggles with transaction latency and fails to handle transaction load compared to conventional payment systems. The one-of-a-kind and promising features of Layer 2 networks have drawn the attention of researchers within the cryptocurrency community and continue to expand pervasively. A Layer 2 network is basically a third-party protocol that decreases the burden on Layer 1 by overcoming its technical limitations while taking advantage of its strengths. 
In other words, Layer 2 networks serve as a scalable workaround, handling transactions off-chain in the most efficient and effective way possible, batching or consolidating them to the main chain from time to time. By allowing the mainnet to concentrate on decentralization, data availability, and security, among other things, Layer 2 networks are paramount in terms of growth and the advancement of the cryptocurrency industry. In other words, Layer 2 networks contribute to the Bitcoin ecosystem by solving scalability and transaction speed issues, expanding the asset’s utility beyond a store of value. 

Innovators And Developers Have Devised Several Bitcoin Layer 2 Solutions Over the Years 

Several Layer 2 networks have emerged within the Bitcoin ecosystem, each enabling scalability and adaptability while introducing new functionalities. They’re built on the Bitcoin blockchain, so they don’t require any modification to Layer 1. Scaling solutions that can be used and coexist together are: 

Lightning Network 

The Lightning Network is one of the most important Layer 2 scaling solutions on account of its association with Bitcoin and its ability to bring value to the blockchain. Transfers are finalized through a network of payment channels rooted in Bitcoin’s blockchain, so consumers can exchange value without a go-between. The Lightning Network can achieve a throughput of one million transactions per second. Lightning Labs, the company behind the Lightning Network, aims to build a programmable layer for the internet with fast, scalable transactions. 
Some of the most notable features and products developed using the Lightning Network include but aren’t limited to Loop, Pool, Taro, and Faraday. Participants can transfer Bitcoin between one another using state channels, which enable microtransactions on top of the Bitcoin base layer. Two or more parties can perform unlimited private transactions off-chain, sending and receiving coins via encrypted peer-to-peer channels, which are practically smart contracts. Once the transactions are complete, it’s possible to close the channel. Bitcoin improvement proposals included in the Taproot upgrade address the privacy of each transaction. 

Rootstock 

Rootstock is a sidechain that makes it possible for developers to build applications on top of Bitcoin. Every smart contract developed on Rootstock can be used on Ethereum without having to worry about compatibility; the native cryptocurrency, RBTC, is used as gas for all transactions used on the sidechain. When you send Bitcoin to Rootstock, it becomes locked, so transferability and trading aren’t possible until a preset period or certain conditions are met. The cryptocurrency is stored in your RSK wallet; sending it in the other direction allows you to withdraw your Bitcoin from the network. 

Stacks Protocol 

Stacks enhances the functionality of Bitcoin via self-executing programs without the need for a hard fork, bringing new functionalities to Bitcoin, of which mention can be made of dApps and smart contracts. The Layer 2 network uses microblocks and a Proof of Transfer mechanism, so miners don’t require specialized hardware to take part in Stacks mining. Instead of burning the cryptocurrency, miners transfer the committed digital assets to other participants in the network. STX, Stacks’ native digital token, is used to execute Bitcoin smart contracts that use the Clarity programming language. Stacks isn’t innovative, but it does extend Bitcoin’s functionality. 

Liquid Network 

The Liquid Network, created by Blockstream, interacts with the main chain via a two-way peg, so tokens are sent from the mainnet to the sidechain via a locking mechanism. To be more precise, the assets on the sidechain are pegged 1:1 to the value of the native assets they stand for. By sending Bitcoin to the Liquid Network, retail and institutional investors can take advantage of decentralized finance services supported by the Bitcoin blockchain. Examples are trustless swaps, security tokens, and private peer-to-peer payments. As opposed to Bitcoin, the Liquid Network bundles transactions together into blocks, signed by Functionaries who run full nodes and validate new transactions. 
The ability to realize confidential transactions sets the Liquid Network apart from Bitcoin’s transparent ledger, keeping users’ financial data safe. All tokens are based on the same standard, which ensures interoperability. With its infrastructure and capabilities, the Layer 2 network represents a potential solution to block spaced issues by moving Ordinals and similar data transactions to the sidechain. Block space is, therefore, preserved for standard, smaller transactions.