class Introduction_to_web3_and_blockchain.pdf

web3 intro about blockchaiin and how bep20 works

1. Introduction to Web3 &
Blockchain

2. Table of contents
01
04
02
05
03
06
Web 1.O

Web 2.O Web 3.O
Blockchain
Bitcoin,
Mining
Mempool

3. ●Static HTML web pages without user interaction
●Read-only content
●Mainly informational Websites
●Webmaster , Only responsible for updating users and managing the
content of the website.
Web 1.O

4. ●Read-write web or the social web
●Allow users to interact
●Fostered a culture of collaboration and sharing online.
●Introduced Blogs, Social media, wiki, Youtube , etc
Web 2.O

6. ●Read-write-own web
●Introduced Decentralization
●Uses blockchains, cryptocurrencies, and NFTs
●Power shifted to users from big tech in terms of Ownership
●Permissionless and trustless
Web 3.O
Source : What is Web3 and why is it important? | ethereum.org

7. Source : What is Web3? | Chainlink

8. Source : What Is Web 3.0 & Why It Matters. Written by Max Mersch and Richard… | by
Fabric Ventures | Fabric Ventures | Medium

9. Source : What is Web 3 ? - And what you need to know to get started. (myraah.io)

10. Source : What is Web 3.0? Everything explained (creative-tim.com)

11. Evolution of web 3.O

12. Blockchain
●Distributed ledger with lists of records (blocks) linked together.
●Operates on a peer-to-peer network.
●Every node (participant) has a copy of entire ledger.
●Once a transaction is recorded, it cannot be altered.
Source: What is blockchain? How does it work? What is its applications? | by Lê Tùng | Medium

13. Understand Ledger
●Source - But how does bitcoin actually work? (youtube.com)

14. Source :What is the impact of Blockchain technology on eCommerce Business? -
Blogs (darkbears.com)

15. Source: https://bootcamp.cvn.columbia.edu/blog/what-is-blockchain-beginners-guide/

16. POW(Proof of work)
●Source - But how does bitcoin actually work? (youtube.com)

17. Evolution of Blockchain
Source : Blockchain for Cryptocurrency | Blockchain Technology Fundamentals
(witscad.com)

18. Bitcoin
●Decentralized Digital Asset
●Introduced in 2009 by an anonymous group of
developers using the name Satoshi Nakamoto
●Operates on a decentralized network
●Transactions recorded on a public ledger called
the blockchain.
●Offers a potential alternative to traditional banking
systems.

19. Link:- Bitcoin Price | BTC Price Index and Live Chart - CoinDesk

20. Source : Blockchain Mining: Definition, Process, Pooling &
Miners - The Engineering Projects

21. Mining Difficulty
●Updates every 2016 blocks (~ every 2 weeks)
●Increase with more no. of miners
Source : Bitcoin - The Miners - Notepub

22. Source :- But how does bitcoin actually work? (youtube.com)

23. Source : Bitcoin mining difficulty 2009-2024 | Statista

24. Source : Bitcoin Blockchain Size Daily Trends: Bitcoin Statistics | YCharts

25. Bitcoin Halving
●Source - (5329) What Happens When ALL 21 Million Bitcoin Are Mined? -
YouTube

26. Source : The 2024 Bitcoin halving – Everything you need to know |
Independent Reserve

27. Mempool - Bitcoin Explorer
●short for "memory pool"
●Enables to view real-time and historical information about a
node's mempool
●Visualize its transactions
●search and view those transactions
●Free and Open Source Software
●Self hosted - No trusted third party

29. ●Forecasted or Projected Blocks - blocks in process of being mined
●Confirmed Blocks - mined blocks (Transaction successfully added to
blockchain)

30. Block height : position of a block within the chronological
sequence of blocks in blockchain
Average Fee rate paid per block
Range of fee paid by users
Total amount of Bitcoin in transaction
Total number of transaction
Time when transaction confirmed
Group of miners mined the block

31. Block

32. Expected and Actual Block
●Mempool monitors mempool view, running Bitcoin Core's
algorithm every 2 seconds.
●Snapshot of expected block saved at new block mining,
serving as next block's template.

33. ●Highlighted transactions convey various heuristics:
○Added: Blue for transactions prioritized by the miner or
accepted out-of-band.

○Recently Broadcasted: Dark pink for transactions first
seen within 3 minutes of block mining.

○Marginal Fee: Darkened for low-end feerate transactions
displaced from blocks.

○Removed: Bright pink for transactions intentionally
excluded from blocks.

34. Transactions

36. Empty Blocks

37. Genesis Block

38. Explore mempool.space

39. Activity 1
●Get the number of Empty Blocks in last 12 hours

●From the pools ranking find the number of blocks mined
by F2Pool

●Find the block number having the highest transactions in
last 1 hour and get the nonce value for it

40. Activity 2
●Identify the size of the 'Bitcoin Pizza Day' transaction

●Determine the fees paid to the miner

●Find the timestamp of the transaction

●Locate the transaction ID

●How many Bitcoins were exchanged for the two pizzas

●Calculate the current value of those Bitcoins today

41. Activity 3

●Find the block number of the third Bitcoin halving

●Analyze block sizes before and after the third halving

●Get no. of transactions in the third halving block

●Determine the miner reward in the third halving block.