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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 75 of 80
In Progress

75. Blockchain RPC for Web3: A key technology in the world of decentralized finance!

Blockchain, also known as distributed ledger technology, has revolutionized the way financial transactions are processed, and records are maintained. 

One of the key elements of this revolution is Blockchain RPC (Remote Procedure Call) for Web3, enabling communication between a client and a blockchain node. 

In today’s lesson, we will explore whether there is RPC for Web3 and discuss the topic in detail!

What is RPC? Definition of RPC.

RPC, or Remote Procedure Call, is a communication protocol that facilitates interactions between applications. Its primary function is to allow programs to communicate with remote programs hosted on other networks. 

Importantly, RPC calls themselves do not require details regarding the server of a given network. Therefore, anyone can use RPC from their local hardware and request various resources from a remote server system. 

After finalizing such a request, RPC will ask the server in question to execute a subroutine – a procedure. So, where does the relationship between RPC and blockchain technology come in? It is evident in how decentralized applications retrieve blockchain data for their proper operation. In this case, decentralized applications act as the client, while RPC nodes take on the role of the server.

What is Blockchain RPC?

In the context of blockchain, Blockchain RPC is a communication interface that allows clients (e.g., web applications, cryptocurrency wallets) to perform operations on a blockchain node fully remotely.

Blockchain RPC for Web3 is based on a specific programming interface known as the Web3 API. Web3 is a library that provides development tools and methods for building decentralized applications (DApps) on a blockchain platform.

How does Blockchain RPC for Web3 work?

Blockchain RPC for Web3 enables communication between an application and a blockchain node via RPC queries. The application generates a query, which is then sent to the blockchain node via Blockchain RPC. The node processes the query and returns a response containing the necessary information or confirmation of the operation, for example, in the case of cryptocurrency transactions.

Interactions with the blockchain node include various operations, such as retrieving blockchain information, sending transactions, checking account balances, and performing any available smart contract functions. All of this is made possible by Blockchain RPC for Web3, which bridges the gap between the application and the blockchain.

What is a blockchain RPC endpoint?

The endpoints of RPC differ from URLs because they define the location where decentralized applications can direct requests to blockchain nodes. Blockchain nodes are computers equipped with special client software that synchronize with other nodes. In practice, the blockchain constitutes an ecosystem of nodes that exchange information among themselves.

As a result, when a dApp application establishes a connection with an RPC endpoint, it gains the ability to use blockchain data—that is, to extract information from the blockchain and send it elsewhere. The RPC endpoint effectively acts as the entry point to the blockchain, necessary for the dApp to authorize user operations.

For example, when a player wins a tournament in a game based on blockchain, the application needs to update his balance. To do so, it uses the RPC blockchain endpoint. It first requests balance data before the tournament and then sends information to the blockchain about the need to increase the balance after the transaction from the game account.

Why are RPC endpoints so important in blockchain technology?

Developers of Web3 need private RPC endpoints for several key reasons. First and foremost:

Speed: Public endpoints have limited resources, making them unable to provide the required responsiveness for modern applications. Due to these limitations and heavy load, it is challenging to maintain a sustainable connection for all users, negatively affecting application performance.

Flexibility: Public RPC endpoints lack dedicated support teams, resulting in API interfaces that may not be tailored to different use cases. This limitation means that public infrastructure providers may struggle to adapt to specific application requirements, such as the need to connect dApps to archive nodes, which can be prohibitively expensive.

Scalability: Private RPC endpoints offer flexibility by allowing developers to request additional bandwidth as needed. Additionally, developers have the ability to reserve premium infrastructure, tailoring it to the specific requirements of their projects.

Blockchain RPC applications for Web3.

Financial applications based on blockchain often use Blockchain RPC for Web3 to process transactions, check account balances, and monitor financial operations. 

Decentralized finance (DeFi) projects, such as DeFi protocols, also leverage Blockchain RPC to interact with smart contracts and perform operations like lending, currency exchange, and staking. 

Cryptocurrency wallets utilize Blockchain RPC to manage balances, perform transactions, and check the history of operations on a particular account. 

In the realm of decentralized games, Blockchain RPC for Web3 is employed to handle payments, trade in-game items, and interact with smart contracts that support the entire game.

The Future of Blockchain RPC for Web3

While Blockchain RPC for Web3 brings many benefits, it also faces challenges, primarily in the areas of security, scalability, and interoperability between different blockchain networks. 

The future of Blockchain RPC for Web3 involves the further development of blockchain protocols, increased integration with existing financial systems, and the growing importance of the decentralized ecosystem. This tool remains key to the further development of decentralized finance and the blockchain ecosystem.


Blockchain RPC for Web3 is a key piece of infrastructure that enables applications to decode and interact with the blockchain. It makes decentralized finance, applications, and many other blockchain-based projects a reality. 

The development of this technology plays a key role in shaping the future of decentralized finance and blockchain technology as a whole.

Complete today’s lesson!

  1. Blockchain bridges
  2. Scalability of blockchain technology – what is it?
  3. Do confidential transactions on blockchain instate?
  4. What is Web3.js and Ether.js?
  5. What are RPC Nodes and how do they work?