Ethereum blockchain
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Ethereum is a blockchain network that allows developers to build decentralized applications and smart contracts. It uses proof-of-work consensus to validate transactions and add them to immutable blocks. Smart contracts deployed on Ethereum are public and their source code can be viewed by anyone. Ethereum is working to transition from proof-of-work to proof-of-stake consensus.
Ethereum blockchain
- 1. ethereum
- 2. $ whoami Aleksandr Sobolev Software Engineer at Mad Devs Platform and Ecosystem for Ethereum Security Tools MythX is a security analysis API for Ethereum smart contracts. It powers tools that bring security into the smart contract SDLC. s0b0lev s0b0lev
- 5. Blocks - Average block time 15 sec - Block is linked to the previous one - Merkle tree - Miners - block includes a set of transactions - Blocks are immutable - Distributed across network via p2p - Verified via PoW - Block reward 2eth
- 7. Transactions - Change of blockchain state - State tick - Miners - Paid Gas to miner - Signed by EOA private key - Smart Contract interaction - NONCE <- important one Credits: https://hackernoon.com/merkle-trees-181cb4bc30b4
- 8. Byzantine fault tolerance (BFT) Consensus - Proof of Work (PoW) (current implementation) - Proof of Stake (PoS) (planned migration)
- 9. Ethereum Accounts Externally Owned Account (EOA) - Private key - Address - Balance - Can create transactions
- 10. - Address - Ballance - Source Code - A lot of vulnerabilities. Contract Account Ethereum Accounts
- 12. Smart Contracts (2 words) 1. Immutable 2. Public
- 13. Smart Contracts are public - Read contract source code, bytecode - See balance - Contract creator - Contract transactions - etc...
- 14. Ethereum Classic (DAO Fork)
- 15. EIPs EIP 867: Standardized Ethereum Recovery EIP 999: Restore Contract Code at 0x863DF6BFa4469f3ead0bE8f9F2AAE51c91A907b4 http://eips.ethereum.org/EIPS/eip-999http://eips.ethereum.org/EIPS/eip-867
- 17. Gas Price - Cost per opcode execution - Cost for transaction - Block has gas limit (avoid infinite loops and keep average block time) - Transaction gas fee (base fee 21000)
- 18. Lets BUIDL
- 19. BUIDL: verb bui dl Definition of BUIDL 1 : building useful blockchain based products and services that democratize technology for people of all races, genders and cultures 2 : to develop blockchain projects at every layer of the technology stack, from protocols and infrastructure to dApps and design // BUIDLing the next great dApp // I don't HODL, I BUIDL // Have an idea... Why not BUIDL it? // I'm a BUIDL Ambassador