@skarthi3688
00:00:00 - Introduction 00:00:51 - Author 00:02:04 - prerequisites 00:03:00 - Resources 00:03:57 - learn at your own Pace 00:05:00 - Community 00:05:58 - Blockchain 00:06:25 - Bitcoin 00:07:27 - Ethereum 00:08:14 - Smart Contracts 00:09:07 - Bitcoin vs Ethereum 00:09:43 - Oracle problem & Solution 00:10:28 - Hybrid Smart Contracts 00:11:01 - Chainlink 00:12:47 - Importance of Ethereum 00:13:33 - Chainlink features 00:13:50 - summary 00:15:04 -Features & Advantages of Smart contracts and Blockchain 00:15:15 - Decentralized 00:16:55 - Transparency & Flexibility 00:17:35 - Speed & Efficiency 00:18:11 - Security & Immutability 00:19:34 - Removal of Counterparty risks 00:21:13 - Trust Minimized Agreements 00:23:21 - Summary 00:24:46 -DAOs 00:25:15 -Ethereum Transaction On a Live Blockchain 00:25:57 - Wallet Creation 00:29:30 - Etherscan 00:30:03 - Multiple Accounts 00:30:28 - Mnemonic , Public & Private keys 00:31:34 - Mnemonic vs Private vs Public keys 00:32:02 - Mainnet & Testnets 00:33:39 - Initiating our first Transaction 00:35:55 - Transaction details 00:36:50 - Gas fees, Transaction fees, Gas limit, Gas price .... 00:39:36 - Gas vs Gas price vs Gas Limit vs Transaction fee 00:40:40 - Gas estimator 00:43:46 -How Blockchain works/whats going on Inside the Blockchain 00:44:26 - Hash or Hashing or SHA256 00:46:35 - Block 00:49:37 - Blockchain 00:53:18 - Decentralized/Distributed Blockchain 00:57:19 - Tokens/Transaction History 00:59:55 - Recap/summary 01:01:34 -Signing and Verifying a Transaction 01:01:45 - Public & Private Keys 01:03:29 - Signatures 01:05:05 - Transactions 01:07:39 - Recap/summary 01:09:00 -Concepts are same 01:10:03 - Nodes 01:10:40 - Anyone can Become a Node 01:11:02 - Centralized entity vs Decentralized Blockchain 01:11:55 - Transactions are Listed 01:12:27 - Consensus ,Proof of Work ,Proof of Stake 01:12:35 - Consensus 01:13:21 - proof of work/Sybil resistance mechanism 01:14:56 - Blocktime 01:15:32 - Chain selection rule 01:15:50 - Nakamoto consensus 01:16:15 - Block Confirmations 01:17:00 - Block rewards & transaction fees 01:19:34 - Sybil attack 01:19:52 - 51% attack 01:21:41 - Drawbacks of pow 01:21:53 - proof of stake/sybil resistance mechanism 01:23:14 - Validators 01:24:27 - pros & cons of pos 01:25:27 - Scalability problem & Sharding solution 01:26:40 - Layer 1 & Layer 2 01:27:22 - Rollups 01:28:15 - Recap/Summary 01:29:28 -Solidity 01:30:47 - Lesson 1 - Remix IDE & its features 01:33:32 - Solidity version 01:35:29 - Defining a Contract 01:36:08 - Variable types & Declaration 01:38:45 - Solidity Documentation 01:39:01 - Initializing 01:39:55 - Functions or methods 01:40:54 - Deploying a Contract 01:42:05 - Public , Internal , private , External Visibility 01:44:54 - Modifying a Variable 01:45:49 - Scope 01:47:10 - View functions 01:48:51 - Pure function 01:50:57 - Structs 01:52:42 - Intro to storage 01:53:22 - Arrays 01:54:27 - Dynamic array 01:54:41 - Fixed array 01:54:54 - Adding to an array 01:56:12 - Compiler Errors 01:57:27 - Memory Keyword 01:57:48 - Storage keyword 01:59:44 - Mappings Datastructure 02:01:53 - SPDX license 02:02:37 - Deploying to a live network 02:06:16 - Interacting with deployed contracts 02:07:35 - EVM 02:08:13 - 💪🏻 02:08:31 - Recap/summary 02:09:20 - Lesson 2 - StorageFactory 02:09:44 - Factory pattern 02:10:21 - New contract StorageFactory 02:11:36 - Import 1 contract into another 02:13:01 - Deploy a Contract from a Contract 02:14:43 - Track simple storage contracts 02:16:34 - Interacting with Contract deployed Contract 02:16:43 - Calling Store & Retrieve Functions from SF 02:17:43 - Address & ABI 02:19:15 - Compiling & storing in SS through SF 02:20:00 - Adding Retrieve Function 02:21:50 - Compiling 02:22:27 - Making the Code lil bit Simpler 02:23:32 - Additional Note 02:23:58 - Inheritance 02:25:53 - Recap 02:26:23 - Lesson 3 - Fund me 02:27:12 - purpose of this contract 02:27:21 - Payable function , wei , gwei & ether 02:28:30 - Mapping , msg. sender , msg.value 02:30:23 - Funding 02:31:48 - ETH -> USD /conversion 02:32:38 - Deterministic problem & Oracle solution 02:34:15 - Centralized Oracles 02:34:52 - Decentralized Oracle Networks 02:35:23 - Chainlink Datafeeds 02:36:50 - Chainlink Code documentation on ETH/USD 02:40:17 - Importing Datafeed code from Chainlink NPM package 02:41:31 - Interfaces 02:42:55 - ABI/Application Binary Interface 02:43:43 - Interacting with an Interface Contract 02:45:06 - Finding the Pricefeed Address 02:46:13 - Deploying 02:47:58 - Getprice function 02:48:29 - Tuples 02:49:57 - Typecasting 02:50:30 - deploying 02:51:46 - Clearing unused Tuple Variables & Deploying 02:52:53 - Making the contract look Clean 02:53:50 - Wei/Gwei Standard (Matching Units) 02:54:45 - getting the price using Get conversion rate 02:57:32 - deploying 02:58:29 - Safemath & Integer Overflow 03:02:35 - Libraries 03:03:30 - Setting Threshold 03:04:26 - Require statement 03:05:18 - Revert 03:06:05 - Deplying & Transaction 03:08:26 - Withdraw Function 03:09:09 - Transfer , Balance , This 03:10:21 - Deploying 03:11:08 - Owner , Constructor Function 03:13:17 - Deploying 03:15:51 - Modifiers 03:17:42 - Deploying 03:18:05 - Resetting the Funders Balances to Zero 03:19:37 - For loop 03:21:39 - Summary 03:22:27 - Deploying & Transaction 03:25:00 - Forcing a Trasacttion 03:26:35-Python 03:26:35 -Lesson 4 - Web3. py SimpleStorage 03:27:06 - Limitations of Remix 03:28:10 - VScode , Python , Solidity Setup 03:30:31 - VScode features 03:30:58 - Testing python install & Troubleshooting 03:32:32 - Creating a new folder 03:32:59 - SimpleStorage. sol 03:34:40 - Remember to save 03:35:26 - VScode Solidity Settings 03:36:57 - Python Formatter & settings 03:37:56 - Author's recommended Settings 03:38:09 - working with python 03:38:51 - Reading our solidity file in python 03:40:19 - Running in Python 03:40:40 - Keyboard Shortcuts 03:40:56 - Py-Solc-x 03:41:43 - Importing solcx 03:42:01 - Compiled_sol 03:42:51 - Bracket pair colorized 03:43:56 - pysolcx documentation 03:44:25 - Printing Compiled_sol 03:44:47 - Comparison wih remix (Lowlevelstuffs , ABI) 03:46:29 - Saving Compiled Code/writing 03:46:56 - import Json 03:47:32 - Json formatting/settings 03:48:28 - Deploying in Python (Bytecode , ABI) 03:50:54 - Which Blockchain/Where to deploy 03:51:25 - Ganache Chain 03:52:27 - Ganache UI 03:53:27 - Introduction to Web3. py 03:53:32 - pip install web3 03:53:40 - import web3 03:53:52 - Http/Rpc provider 03:54:23 - Connecting to Ganache(RPC server,Documentation,Chain ID,address,Privatekey) 03:56:14 - Deploy to Ganache 03:57:03 - Building a Transaction 03:57:22 - Nonce 03:58:14 - Getting Nonce 03:59:00 - Create a Transaction 03:59:42 - Transaction Parameters 04:00:55 - Signing Our Transaction(signed_txn) 04:01:52 - Never Hardcode your Private keys 04:02:09 - Environment Variables 04:02:27 - Setting Environment variables 04:03:00 - Limitations of Exporting Environment Variables 04:03:27 - Private key PSA 04:03:53 - Accessing Environment Variables 04:04:20 - .env file, .gitignore, pip install python-dotenv 04:05:49 - load_dotenv() 04:07:03 - Sending the signed Transaction 04:07:47 - Deployment 04:08:31 - Block confirmation(wait_for_transaction_reciept) 04:09:05 - interact/work with thee contract 04:09:27 - Address & ABI 04:10:28 - Retrieve() , Call & Transact 04:12:38 - Store function 04:13:58 - Creating Transaction(Store_transaction) 04:15:14 - Signing Transaction(signed_store_txn) 04:15:42 - Sending Transaction(send_store_tx,tx_receipt) 04:16:47 - Deployment 04:17:42 - some nice syntax & deployment 04:18:48 - ganache-cli 04:19:10 - install Nodejs 04:19:40 - install yarn 04:20:38 - Run ganache cli , ganache documentation 04:21:44 - update privatekeys,addresses,http provider 04:22:13 - open new terminal & deploy 04:23:00 - deploy to testnet/mainnet 04:23:55 - Infura, Alchemy 04:24:34 - Create project 04:25:05 - update the rinkeby url, Chain id , address & private key 04:26:20 - Deploying 04:27:21 - summary/recap 04:27:40 -Lesson 5 - Brownie Simple Storage 04:27:53 - Brownie Intro & Features 04:28:44 - create new directory 04:29:39 - install Brownie 04:30:41 - 1st brownie simplestorage project 04:31:08 - Brownie Folders 04:32:25 - copying simplestorage.sol 04:32:44 - brownie compile & store 04:33:22 - brownie deploy 04:33:44 - brownie commands 04:34:22 - brownie runscripts/deploy. py & default brownie network 04:35:10 - brownie Advantages over web3. py in deploying 04:35:38 - getting address & private key using Accounts package 04:36:00 - add default ganache account using index 04:36:58 - add accounts using Commandline 04:37:50 - remove accounts & terminal tips 04:38:17 - getting freecodecamp-account 04:39:15 - add accounts using env variables 04:40:01 - create .env file , brownie-config. yaml 04:40:51 - getting . env 04:41:17 - adding wallets in yaml file and updating in account 04:42:47 - importing contract simplestorage 04:43:09 - importing & deploying in brownie vs web3. py 04:44:27 - running 04:44:46 - recreating web3 .py script in brownie 04:46:20 - running 04:46:48 - tests 04:47:43 - test SS
@InJesterr
For the best teacher on earth, I don't have a single collage degree just but I always knew that I had to find the right person to teach me stuff. For me that was you Patrick <3
@jamesmurphy9772
Successful people don't become that way overnight. What most people see at a glance- wealth, a great career, purpose-is the result of hard work and hustle over time. I pray that anyone who reads this will be successful in life..
@laurabacinich6742
Finally someone who is willing to teach us younger guys instead of pushing some bs course on us. Appreciate it
@parabunx
It's amazing, I'm French, I'm watching the video in 0.75, I'm at 1:29 and I feel like I really elevate myself, I'm learning complex English while learning to code to change the world. It's crazy. Thks Patrick
@aqeelaliani
16 hours of content, with so many topics / techs covered, and all so well! Being able to like this video just once seems highly unfair!
@vhphan19
6 hours into this...and I must say I've learned more from this than any other free/paid courses I've taken. One thing though, huge numbers like 20000000000 can be written as 20_000_000_000 in python to improve readability. 😃
@syllight9053
I can't believe that giga chads like you guys give these content for programmers FOR FREE!
@markopolo2224
finally, after almost 3 months, I finished this course! the amount of information in this video is insane and it was overwhelming at first but slowly I began to understand, I can't say I understood everything but this definitely will put my foot in the industry. thank you so much Patrick for being an ally throughout this journey I absolutely enjoyed this! will see you in the community.
@alexsudakov3406
Crazy good! Thanks!
@ta1994-d9e
After being in crypto for 5 years i'm finally teaching myself solidity. what great timing this course was.
@MrMShake
11:49:15 Lesson 12: Upgrades 3(4?) Patterns of Upgrading: 1 - Parametrise(setter methods to change value of existing state variables) or use a contract registry(with a setter to update the address of the latest version of a smart contract) 2 - Social YEET/Migration(deploy new contract with upgrades and require all users to migrate over to it) 3 - Proxies(2 issues namely storage and function selector clashes) - subdivided into Transparent Proxy Pattern and Universal Upgradeable Proxies Pattern(UUPS) All 3 methods can implement a governance contract to control changes. 4? - Diamond Pattern - if contract is exceeds max size you can split it up into multiple contracts.
@secure_by_default
This is by far the best blockchain course on the internet right now.
@IllustratorJewel
I'm a senior and new to this. This is incredible. I love it. It is well put together. Thank you so much. Patrick Collins, I viewed many videos with good intentions, but often too fast and they skip important details. I really appreciate the heart and time it took you to do this for others. God Bless You. Your giving will have a great and positive ripple effect.
@invntiv
This is absolutely incredible. I cannot believe this is free. This is the ultimate salary booster course ever released for free
@ThomasMukundi
At the 12th hour of study and practice, all I can say is Big Thank you Patrick. This is great and awesome. I have enjoyed the journey, you have really made it so easy to follow. The repetitions of some of the concepts have made it so obvious. Encouraging anyone who is getting started.
@Gounesh
Can’t believe this is free. You guys are literally decentralisation of the coding education. Thank you! Is there a video to implement this to Solana?
@pavindulakshan9655
Some time ago I tried to start learning Blockchain from a Coursera course and I couldn't understand a bit what she was talking. Today I just restarted thanks to this course. Thank you Patrick for this amazing free content.
@danielmaina4942
This is a gold mine if you're getting started with solidity. A must watch period!
@PatrickAlphaC