Blockchain
1. The prototype of a blockchain datesback to the early 1990s
2. 2. when computer scientist Stuart Haber, mathematician Dave Bayer, and physicist W. Scott Stornetta
3. 3. applied cryptographic techniques (used to ensure secrecy and integrity of data)
4. 4. The amazing contributions of these and several others have led to the creation of Bitcoin
5. 5- as the first decentralized digital currency system
6. 6. They were initially referred to as cyber currencies and started gaining popularity in 2008 when Bitcoin was introduced
7. 7. under the pseudonym Satoshi Nakamoto
Blockchain and Society
8. Blockchain technology, the latest wave of digitisation
9. 9. promises to enhance transparent, tamper-proof and secure systems
10. 10. It still evolves and integrates into the world
11. 11. Experts think it makes problems as much as solutions
12. 12. Basically, it is about trust and finding democratic solutions to problems
13. 13. However, it requires more cooperation to discuss the required form of transparency
14. 14. and the impact of smart contracts on the local and international community
15. 15. Blockchain can be used in several domains such as health care, insurance and trade …
16. 16. This technology has allowed the production of original digital works
Transactions by Blockchain
17. The global network of computers has allowed Blockchain to spread
18. 18. It is a chain of open records (blocks) of fixed size
19. 19. Each new block of instructions is added to a linear sequence chain
20. 20. Each block is encoded and contains a verifiable encryption key
21. 21. Blockchain transactions occur within a peer-to-peer (computer) network called nodes
22. 22. Each node maintains a copy of the blockchain and contributes to the functioning and security of the network
23. 23. which makes, for example, Bitcoin or others decentralized, a censorship-resistant cryptocurrency that does not require third-party mediation
24. 24. The Proof of Work consensus algorithm is an essential component of the Bitcoin mining process
25. When a contract is made between two parties
26. 26. Any member of the network can determine whether it is a real action or not
27. 27- which means that both sides of the transaction and the transferred funds can edit
28. 28. This technology allows verification of transactions without the need for an intermediary
29. 29. Any ledger is decentralisedly distributed in which confirmed transactions are recorded
30. 30. Blockchain technology is designed to be resistant to modification and fraud
31. 31. It is an essential component of most cryptocurrency networks
32. 32. the thing that makes each bitcoin a unique and irreversible work
33. 33. Do you know new uses for this technology?