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3. Advanced Course

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  1. 1. What is Taproot?
  2. 2. Blockchain bridges – what are they?
  3. 3. What is Ethereum Plasma?
  4. 4. What is Ethereum Casper?
  5. 5. What is Zk-SNARK and Zk-STARK? 
  6. 6. What is Selfish Mining? 
  7. 7. What is spoofing in the cryptocurrency market? 
  8. 8. Schnorr signatures - what are they? 
  9. 9. MimbleWimble - what is it? 
  10. 10. What is digital property rights in NFT?
  11. 11. What are ETFs and what role do they play in the cryptocurrency market? 
  12. 12. How to verify a cryptocurrency project – cryptocurrency tokenomics 
  13. 13. What is the 51% attack on blockchain?
  14. 14. What is DAO, and how does it work?
  15. 15. Zero-knowledge proof – a protocol that respects privacy 
  16. 16. What is EOSREX?
  17. 17. What is Proof of Elapsed Time (PoET)?
  18. 18. Mirror Protocol – what it is? 
  19. 19. What are synthetic assets? 
  20. 20. How to create your own NFT? 
  21. 21. Definition of DeFi, and what are its liquidations?
  22. 22. New identity system - Polygon ID
  23. 23. Ethereum Foundation and the Scroll protocol - what is it?
  24. 24. What is Byzantine fault tolerance in blockchain technology?
  25. 25. Scalability of blockchain technology - what is it?
  26. 26. Interchain Security - new Cosmos (ATOM) protocol
  27. 27. Coin Mixing vs. Coin Join - definition, opportunities, and threats
  28. 28. What is Ethereum Virtual Machine (EVM) and how does it work?
  29. 29. Soulbound Tokens - what are they, and how do they work?
  30. 30. Definition of LIDO - what is it?
  31. 31. What are Threshold Signatures, and how do they work?
  32. 32. Blockchain technology and cyberattacks.
  33. 33. Bitcoin script - what it is, and what you should know about it.
  34. 34. What is zkEVM, and what are its basic features?
  35. 35. Do confidential transactions on blockchain exist? What is a Confidential Transaction?
  36. 36. Algorithmic stablecoins - everything you should know about them.
  37. 37. Polygon Zk Rollups ZKP - what should you know about it?
  38. 38. What is Web3 Infura?
  39. 39. Mantle - Ethereum L2 scalability - how does it work?
  40. 40. What is the NEAR Rainbow Bridge?
  41. 41. Liquid Staking Ethereum and LSD tokens. What do you need to know about it?
  42. 42. Top 10 blockchain oracles. How do they work? How do they differ?
  43. 43. What are Web3.js and Ether.js? What are the main differences between them?
  44. 44. What is StarkWare, and recursive validity proofs
  45. 45. Quant Network: scalability of the future
  46. 46. Polygon zkEVM - everything you need to know
  47. 47. What is Optimism (OP), and how do its roll-ups work?
  48. 48. What are RPC nodes, and how do they work?
  49. 49. SEI Network: everything you need to know about the Tier 1 solution for DeFi
  50. 50. Types of Proof-of-Stake Consensus Mechanisms: DPoS, LPoS and BPoS
  51. 51. Bedrock: the epileptic curve that ensures security!
  52. 52. What is Tendermint, and how does it work?
  53. 53. Pantos: how to solve the problem of token transfer between blockchains?
  54. 54. What is asymmetric encryption?
  55. 55. Base-58 Function in Cryptocurrencies
  56. 56. What Is the Nostr Protocol and How Does It Work?
  57. 57. What Is the XDAI Bridge and How Does It Work?
  58. 58. Solidity vs. Rust: What Are the Differences Between These Programming Languages?
  59. 59. What Is a Real-Time Operating System (RTOS)?
  60. 60. What Is the Ethereum Rinkeby Testnet and How Does It Work?
  61. 61. What Is Probabilistic Encryption?
  62. 62. What is a Pinata in Web 3? We explain!
  63. 63. What Is EIP-4337? Will Ethereum Account Abstraction Change Web3 Forever?
  64. 64. What are smart contract audits? Which companies are involved?
  65. 65. How does the AirGapped wallet work?
  66. 66. What is proto-danksharding (EIP-4844) on Ethereum?
  67. 67. What is decentralised storage and how does it work?
  68. 68. How to Recover Cryptocurrencies Sent to the Wrong Address or Network: A Practical Guide
  69. 69. MPC Wallet and Multilateral Computing: Innovative Technology for Privacy and Security
  70. 70. Threshold signature in cryptography: an advanced signing technique!
  71. 71. Vanity address in cryptocurrencies: what is it and what are its characteristics?
  72. 72. Reentrancy Attack on smart contracts: a threat to blockchain security!
  73. 73. Slither: a static analyser for smart contracts!
  74. 74. Sandwich Attack at DeFi: explanation and risks!
  75. 75. Blockchain RPC for Web3: A key technology in the world of decentralized finance!
  76. 76. Re-staking: the benefits of re-posting in staking!
  77. 77. Base: Evolving cryptocurrency transactions with a tier-2 solution from Coinbase
  78. 78. IPFS: A new era of decentralized data storage
  79. 79. Typical vulnerabilities and bridge security in blockchain technology
  80. 80. JumpNet - Ethereum's new sidechain
Lesson 45 of 80
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45. Quant Network: scalability of the future

In the cryptocurrency space, there are many digital assets that run on the blockchain. Each cryptocurrency has a different purpose and serves something different. Yet, they face a number of problems. One of them is the lack of interoperability of the blockchain network. We wrote about what blockchain interoperability is here.

Every blockchain network is built differently. This logically makes interoperability and compatibility with other networks difficult. Blockchains are not able to share information and data with each other. Quant Network is a scaling solution that proposes to address these shortcomings.

Quant Network – definition

Making its debut in 2018, Quant Network is a blockchain interoperability network, an operating system that improves work and interoperability between multiple blockchains.

The network acts as an intermediary. It helps bridge multiple blockchains by implementing very simple software solutions that do not require additional layers of infrastructure. It uses DLTs and API connectors for its operation. This helps in establishing connections between blockchains. These connections are established via an API gateway. But that’s not all. Quant Network uses its Overledger Enterprise platform, which the company itself promotes as the first DLT gateway. Using an API gateway, the platform allows other blockchains to access the information they need very quickly by connecting them to the distributed ledgers of other blockchains.

The Overledger DLT Gateway enables the Quant Network to connect decentralized networks. Regardless of which distributed ledger technology, they use.

How does the Overledger gateway work?

Overledger removes all communication barriers and uses MApps as dApps. The Overledger team has designed the architecture to enable both improved scalability and interoperability. To achieve this, the developers have designed the Quant Network, they rely on layers that perform individual tasks. Let us take a closer look at these:

  1. Transaction Layer. It is responsible for storing transactions and uses ledger technology. In quotes, this is the home for all operations required to reach consensus in blockchain networks.
  2. Messaging Layer. This is the logical layer. It deals with all the information that is retrieved from the ledgers. This includes smart contract data, metadata, transaction data and message summaries between multiple applications.
  3. Philter and organization layer. This layer also processes messages, but those extracted and compiled from information about a specific transaction. It refers to the hash of transactions that are exchanged out-of-chain. Another task of this layer is to establish connections between messages coming from the messaging layer. In addition, this layer also validates out-of-chain messages for metadata.
  4. Application layer. Messages that are considered valid in this layer because they have the required format and signatures can update the status of the application that refers to them.

Overledger DTL Gateway

This is another communication protocol in the Quant Network. It relies on different types of distributed ledgers. We can use the protocol without interacting with the ledgers, at any application level. The Overledger DLT Gateway therefore does not require consensus. The gateway works without a single point of failure or transactional bottlenecks. Interestingly, it can work with multiple ledgers simultaneously, giving us greater scalability for dApps and mDapps.

Decentralized mDapps

These are also applications, but they are built on top of the Web3 infrastructure. They are decentralized – we have no manager or single point of failure. Unlike dApps, which run on a distributed network of nodes, mDapps use blockchain technology and implement various DLTs.

dApps are usually limited to a single chain or network. mDapps can enable transactions across multiple distributed ledgers simultaneously. mDapps is a standardized application model that enables interoperability with multiple DLTs.


It is the native token of the Quant Network. It was developed on the Ethereum blockchain in the ERC-20 standard, and any developer who wants to build on the network must own this token. QNT is also used by Overledger users to pay for reading and moving assets between chains.

In order to access the Quant ecosystem and interact with Overledger at all, users must own a certain amount of QNT. The token is designed to facilitate the creation, use and access of mDapps on the Quant network.


Quant Network is another application to improve the scalability of blockchain networks. You already know what it is and how it works. It must be said that the project is very complex, and the technology used is unique. Assuming that the project attracts more users, it will be a very important player as the cryptocurrency space matures.