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Scallop Learn
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        • Crypto Trading 101: Must know candlestick patterns for a successful trade
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        • Do not miss these common indicators of the crypto bull market
        • Decoding the Dynamics of Permissioned Blockchain Consensus Mechanisms
        • Summary
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        • Can Quantum Computers be a potential threat to Crypto?
        • Unlocking the cryptocurrency potential: How Banks can thrive in the digital age?
        • How do privacy-enhancing technologies ensure anonymity on the blockchain?
        • What Does Fintech Mean? Understanding the Intersection of Finance and Technology
          • Decoding Data Tokenisation: Its Vital Role and Relevance
        • Unravelling the Concept of the Time Value of Money: Its Implications and Applications
        • Unlocking the Potential of Real-World Assets
        • What is Byzantine fault tolerance?
        • Global Crypto Adoption and Its Potential Socio-Economic Impact
        • How ZK-Rollups are Supercharging Blockchain Transactions?
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      • Skimming of Credit and Debit Cards: What You Need to Know
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      • Keeping Your Account Safe
      • Money muling scams: What are they and how can you avoid them?
      • Beware of these common frauds while using payment cards
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      • Summary
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        • Scallop Chain: Built on Cosmos and Secured by Biometric Bridge
        • E-Money Tokens and Scallop
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    • Getting Started
      • Getting Started: Fiat Onboarding And Exchanges
      • Getting Started: The Defi Walkthrough
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      • Staking
        • Scallop Staking Guide
          • Useful Resources
          • 1. Setting Up Metamask Wallet
          • 2. Importing existing wallet
          • 3. Installing Binance Smart Chain
          • 4. Setting up a Kucoin Account
          • 5. Buying SCLP with a market order on Kucoin
          • 6. Transferring from Kucoin to Metamask
          • 7. Connecting Metamask to the SCLP Staking platform
        • LP Staking Guide
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    • News: Terra Collapse
    • Terra: Beyond Hope
    • News: Chapter 11 for Celsius
    • News: Nomad Bridge Hack
  • Extras
    • Task Lists
    • Tokenising Real Estate
    • How to Donate Crypto to Ukraine
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  • Summary
  • What is Layer 2 (L2)?
  • Types of L2
  • Popular L2 projects
  1. Guides
  2. Crypto
  3. Intermediate

Layer 2

What are layer 2 solutions and how do they help projects scale

Summary

A layer-1 network refers to a blockchain such as Bitcoin, Ethereum, etc. At the same time, a layer-2 protocol is a third-party integration added on top of on of those layer-1 blockchains to make it more efficient and scalable.

Projects like Ethereum have networks that have become so popular that they suffer congestion and high gas fee's

Ethereum can process 15 transactions per second, and transactions have high gas fee's. Polygon, a L2 solution for Ethereum, has clocked over 9 million transaction in a single day

What is Layer 2 (L2)?

Layer 2 solutions help crpytocurrency projects scale by processing transactions off of the Mainnet (Layer 1) while still maintaining the same security measures and decentralization as the L1. This increases transaction speeds and reduce gas fees. Popular examples of Ethereum layer 2 solutions are Polygon, Loopring and optimism.

Layer 2 solutions offer:

  • Higher transaction processing capacity

  • Lower gas

  • Faster confirmation time

Types of L2

ZK-rollup

'Zero Knowledge' ZK roll-up technology confirms ownership of a piece of detailed information without revealing the actual data. It bundles hundreds of transactions and processes them more efficiently.

Payment channels

A payment channel or state channel is a bilateral communication between users, helping them to interact in a blockchain.

Sidechains

A sidechain is a separate blockchain which runs in parallel to Ethereum Mainnet and operates independently. It is connected to Mainnet (L1) by a two-way bridge. They use their own consensus mechanism, which is the protocols, algorithms, or other computer systems that allow cryptocurrencies to work. Polygon, with their token Matic, is an established L2 solution for Ethereum that uses sidechains.

Plasma

Plasma is a framework for building decentralised applications (‘dApps’) that are meant to be secure, scalable and swift. Plasma allows dApps to achieve this through the creation of ‘child’ blockchains, which are connected to the ‘parent’ blockchain through a smart contract. The child chains also have their own consensus mechanisms.

Popular L2 projects

Polygon - we will do our next article on this L2 solution.

Polygon is a popular layer 2 solution. According to their website, Polygon is:

Polygon is a decentralised Ethereum scaling platform that enables developers to build scalable user-friendly dApps with low transaction fees without ever sacrificing on security.

Other popular layer 2 projects include:

Loopring

Optimism

Metis

Arbitrum one

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Last updated 1 year ago

This allows developers to build on the Ethereum network without the gas fee's and without sacrificing on security. For more visit

Further reading

https://polygon.technology/
https://ethereum.org/en/layer-2/
Transactions on Polygon