Jarrod Watts

Watch me learn how to implement the commit-reveal scheme within Solidity by building a rock-paper-scissors smart contract from start to finish.

📚 Resources 📚

GitHub Repo: https://dub.sh/rps-repo
Written Tutorial: https://dub.sh/rps-tutorial
Foundry: https://book.getfoundry.sh/

⌚Timestamps ⌚

0:00 Introduction
0:45 Planning the Project
10:22 Writing Smart Contract
52:42 Writing Tests
1:15:30 Optimizing Contract
1:24:10 Gas Optimizations
1:40:24 Dev Rel Work (Documenting repo)
1:56:37 Outro

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Live Coding - Intermediate Solidity Challenge - Rock Paper Scissors Smart Contract

Learn how to build your own layer 2 ZK-EVM blockchain from scratch using the Polygon CDK and the Polygon Kurtosis Package. In this video, we cover essential concepts required for understanding layer 2 chains and build our own ZK powered layer 2 blockchain with the Polygon CDK on Ethereum's Sepolia testnet.

📚 Essential Resources 📚

· Polygon CDK Kurtosis Package: https://dub.sh/polygon-kurtosis
· Alchemy RPC: https://dub.sh/alchemy

📚 Helpful Resources 📚

· L2Beat: https://dub.sh/l2beat
· Polygon CDK Docs: https://dub.sh/polygon-cdk-docs
· Kurtosis Docs: https://dub.sh/kurtosis-docs

📜 Scripts 📜

```
polycli wallet inspect --mnemonic "$seed" --addresses 9 | \
    jq -r '.Addresses[] | [.ETHAddress, .HexPrivateKey] | @tsv' | \
    awk 'BEGIN{split("sequencer,aggregator,claimtxmanager,timelock,admin,loadtest,agglayer,dac,proofsigner",roles,",")} {print "zkevm_l2_" roles[NR] "_address: \"" $1 "\""; print "zkevm_l2_" roles[NR] "_private_key: \"0x" $2 "\"\n"}'
```

⌚Timestamps ⌚

0:00 Introduction
1:17 Concepts: What is a Layer 2 blockchain?
4:37 Concepts: Layer 2 Architecture
13:47 Concepts: Data availability
16:12 Concepts: ZK Rollups
19:57 Concepts: ZK Validiums
23:31 Concepts: Rollups vs. Validiums
25:19 Concepts: Layer 2 Transaction Lifecycle
33:40 Concepts: What is the Polygon CDK?
36:61 Polygon CDK Kurtosis Package Introduction
38:39 Setting up your development environment
49:38 Exploring the codebase
57:57 Getting testnet funds
1:03:02 Deploying the L2 on Sepolia
1:41:17 Testing the L2 chain
2:01:00 Outro

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The ULTIMATE Guide to the Polygon CDK | Build A ZK-EVM Layer 2 Blockchain

An exploration of the different kinds of sequencers that Layer 2 (L2) blockchains have today, including centralized sequencers, decentralized sequencers, shared sequencers, and Polygon's AggLayer.

📚 Resources 📚

- Slides: https://gateway.pinata.cloud/ipfs/QmbvZY784N8fBcQz9NAC1STB2AUvpaQuHPMzR7e6nN24p3
- Polygon Announcement Blog: https://polygon.technology/blog/aggregated-blockchains-a-new-thesis
- L2Beat: https://l2beat.com/scaling/summary
- Metis (Decentralized Sequencer L2): https://www.metis.io/
- Inscriptions Video: https://youtu.be/1_n2iqfs2OM
- Polygon zkEVM Video: https://youtu.be/pkvgS26VR8E
- Polygon zkPoS Video: https://youtu.be/8tBb0ro_Syk

⌚Timestamps ⌚

0:00 Introduction
2:00 What Are L2 Sequencers?
8:15 Centralized Sequencers
20:44 Decentralized Sequencers
25:41 Shared Sequencers
36:51 Polygon AggLayer

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What Are Layer 2 Sequencers? The ULTIMATE Guide to Sequencers, Shared Sequencers & Polygon AggLayer

EigenLayer promises to be the shared security layer to hyperscale Ethereum. But what does that really mean? Here is the ultimate guide to understanding EigenLayer.

📚 Resources 📚

- Link to slides: https://gateway.pinata.cloud/ipfs/QmTEk98u5gaPi1VerLFavUgY9gFJPzTPD7HzFDjmdkndYb

- EIP-1559: https://eips.ethereum.org/EIPS/eip-1559

- Polygon 2.0 video: https://youtu.be/0wtQwoxRKxY

⌚Timestamps ⌚

0:00 Introduction
1:07 Proof of Stake Recap
7:10 Liquid Staking Tokens
11:15 Why Ethereum & Why Ethereum Alignment?
18:09 EigenLayer
21:00 Stakers, Operators & Developers
25:03 Developers in EigenLayer
29:59 Operators in EigenLayer
33:07 Staers in EigenLayer
36:06 Relationships between EigenLayer Parties
38:47 Risks of EigenLayer
47:40 Final Thoughts

Follow me on Twitter: https://twitter.com/JarrodWattsDev
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What Is EigenLayer? The ULTIMATE Guide To EigenLayer & Restaking

Inscriptions were taking over EVM chains in December, leading to downtime on some, and gas spikes on others. What's happening?


📚 Resources 📚
Dune Analytics - https://dune.com/hildobby/inscriptions
Ordinals Docs - https://docs.ordinals.com/inscriptions.html
Ethscriptions Docs - https://ethscriptions.com/

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Follow me on Twitter: https://twitter.com/JarrodWattsDev
Join my Discord Server: https://discord.gg/R4Z5MtH8mc

Jarrod Watts

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