# Blockchain lecture 1. хэширование ![hash illustrations](https://i.imgur.com/Bb6gWNR.png) --- ![hash length](https://i.imgur.com/193AU7f.png) --- ![hash function](https://i.imgur.com/bTs9EkY.png) --- как хэширование защищает блоки, несимметричные функции ![collisions](https://i.imgur.com/zZHSPZC.png) --- 2. blockchain - блоки ![chain](https://i.imgur.com/pIFjO80.jpg) --- 3. майнинг - математический пазл ![parent chain](https://i.imgur.com/8of9OWj.png) --- 4. eventual consistency ![canonical chain](https://i.imgur.com/Rf4ioNe.png) --- ![fork](https://i.imgur.com/iSF7aoc.png) --- ![attack - secret mining](https://i.imgur.com/LqaW9Ak.png) --- 6. транзакции. защита от double spending ![state transition](https://i.imgur.com/tukOtlK.png) --- ![states](https://i.imgur.com/veWnNo3.png) --- 7. оптимизиции: merkle trie ![block header](https://i.imgur.com/96bA7IH.png) --- ![merkle trie](https://i.imgur.com/2EWSADF.png) --- 8. smart contracts ![accounts](https://i.imgur.com/1DoPRW5.png) --- ![](https://i.imgur.com/l8duVgv.png) --- ![](https://i.imgur.com/irw190C.png) --- ![](https://i.imgur.com/FRVgD5x.png) --- ![](https://i.imgur.com/PGWvMBq.png) --- 9. Solidity ![](https://i.imgur.com/6HII7YH.png) --- ![](https://i.imgur.com/Z1HkQGE.jpg) --- 10. Примеры 1. Remove intermediaries. S7, facebook, clearmatics В январе 2019 порядка 100 000 USD транзакций в месяц. В июле 2019 - 1 000 000 USD в месяц\* \* https://www.s7.ru/en/about/news/the-amount-of-operations-via-the-s7-airlines-blockchain-platform-and-alfa-bank-exceeded-1-million-in-july/ --- 2. Private money, частные деньги (Хайек Фридрих - https://royallib.com/book/hayek_fridrih/chastnie_dengi.html) --- 3. Stable coin. Fiat-pegged, crypto-pegged, algorithmic (Kowala) ![](https://i.imgur.com/gGobxLm.png) --- ![](https://i.imgur.com/lTg6YII.png) --- ![](https://i.imgur.com/hltng9T.png) --- 4. Apps+cryptoeconomics Плата за действия. Внутренняя валюта. ![](https://i.imgur.com/cdlj2Ay.png) --- 5. Games and gambling (Arcade, corestar) ![](https://i.imgur.com/YyoX3y9.png) --- 6. World-wide transactions 7. Loans --- 8. ICO, funding --- 9. Distributed file systems. IPFS, swarm. (swarm) ![](https://i.imgur.com/8DL3gyi.png) --- ![](https://i.imgur.com/35MLQLr.png) --- 10. Distributed computing. Sonm. ![](https://i.imgur.com/xruW3aS.png) --- ![](https://i.imgur.com/e5qaGIq.jpg) --- 11. Messangers. Status. ![](https://i.imgur.com/gRSZsLw.png) --- ![](https://i.imgur.com/Hru9FF2.gif)
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