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Blockchain Тechnology - Introduction
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- 3. Refused to understandit at first
- 4. Beautiful comprehensive technology ●Immutable ● Distributed ● Autonomous ● Anonymous/Pseudonymous ● Open Source ● Secure
- 5. Lot more thancryptocurrency ● Distributed database ● Distributed computing ● Voting ● Autonomous organizations ● Future forecasting (prediction markets) ● Crowd funding ● Public records ● Copyrights ● Car keys ● ...
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- 7. Technology behind theBitcoin and the other cryptocurrencies
- 8. Chain of chronologicallyordered blocks (transactions)
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- 10. Cryptographically secured ● Pseudonymity ●Data integrity ● Transaction authenticity
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- 12. Before Bitcoin ● Libertarianism ●Evolvement of cryptography ● Cypherpunk ● Online payments ● Financial crises ● Hashcash, b-money, Bit Gold
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- 14. White Paper White paper:https://bitcoin.org/bitcoin.pdf
- 15. Who is? Hal Finney 1stBitcoin Transaction PGP Employee Nick Szabo Bit Gold Smart Contracts Wei Dai b-money Crypto++ Dorian Nakamoto Finney’s neighbour
- 16. 10,000 BTC Pizza 2pizzas for $25,000,000
- 17. Bitcoin Foundation Gavin Andresen MainBitcoin Core developer after Satoshi ● Standardize, protect and promote the use of cryptographic money ● Modeled on the Linux Foundation ● Funded by for-profit companies that depend on the bitcoin technology
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- 19. Exchanges ● Fiat currency<-> Cryptocurrency ● Mount Gox (Mt. Gox) ● Coinbase / Kraken ● Bitcoin7 / Crypto.bg List: https://www.cryptocoincharts.info/markets/info
- 20. From $0 to$3000 Chart: https://99bitcoins.com/price-chart-history/
- 21. Evolvement of blockchain ●Ethereum ● Monero / ZCash ● Private Blockchains ● Hyperledger ● ICOs
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- 23. Client Software ● Wallet ○Full ○ SPV ● Mining ○ Solo ○ Pool ○ Cloud
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- 26. Consensus algorithms ● Proofof Work ● Proof of Stake ● Proof of Capacity ● Proof of Authority ● Proof of Burn
- 27. Mining Hardware ● CPU ● GPU ●FPGA - field-programmable gate array ● ASIC - application-specific integrated circuit
- 28. Keys and Addresses ●Private Key - 256bit random number ● Public Key - Generated from the PK using ECC ● Address = RIPEMD160(SHA256(Public Key)) ● One can have multiple addresses 14fxjE3qepjaYxiqs5WPtDx5y7vMQP81mW
- 29. Wallets ● Hot Wallets- online ● Cold Storage ○ HDD, USB … ○ Paper Wallet ○ Hardware Wallet ● Other ○ Tattoo ○ Memorize
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- 31. Bitcoin ● The first ●Highest valuation ● Strongest community ● Not really anonymous ● Hard fork from August 2017 ● Other cryptocurrencies (altcoins)
- 32. Ethereum ● Distributed computer ●Smart contracts ● Turing-complete ● Programming in Solidity ● Easier for development than Bitcoin ● DAO, Tokens, Crowdsales Vitalik Buterin
- 33. Hyperledger ● Open-source crossindustry blockchain technologies ● Linux Foundation ● Funded by IBM, JP Morgan, Cisco, Intel ...
- 34. ICOs ● Initial CoinOffering ● Capital raising by startups ● Whitepaper ● Similar to IPO and crowdfunding ● Scams ICOs: https://tokenmarket.net/ico-calendar
- 35. æternity Yanislav Malahov ● Bulgariansin the team ● The Godfather of Ethereum ?!? ● ICO for ~$60M ● Similar to Ethereum but offers improvements
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