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

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: dub.sh/polygon-kurtosis
· Alchemy RPC: dub.sh/alchemy
📚 Helpful Resources 📚
· L2Beat: dub.sh/l2beat
· Polygon CDK Docs: dub.sh/polygon-cdk-docs
· Kurtosis Docs: 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 "\"
"}'
```
⌚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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[@ijju246]

Mining 25ETH is a huge issue. The way shown in the video lets me mine 2.5ETH/day. Any fast mining way or can we reduce the distribution from 25 to 2.5 eth ?

[@JarrodWatts]

Ahh, damn, I didn’t realise there was a cap, thanks for letting me know. Few options you can do:
1/ Yes you can reduce the distribution by a lot, you can try 2.5 ETH
2/ Try holesky testnet, easier to get testnet funds there. (Can combine with #1 too)
3/ The default behaviour is to deploy a local L1 for you to use. So you don’t have to use an existing L1 testnet at all, I just think it’s cooler to use a testnet and a good way to showcase customization.

[@ijju246]

@@JarrodWatts Great!! Will changing l1_funding_amount: 5ether to l1_funding_amount: 0.5ether in params.yml do, or do I have to change another file to reduce distribution to 2.5 ETH?

[@ijju246]

@@JarrodWatts Will change l1_funding_amount: 5ether to l1_funding_amount: 0.5ether in params.yml solve the issue, or do I need to make a change somewhere else too?

[@ijju246]

I was waiting for this video for such a long time. Many Thnaks.

[@panditdhamdhere]

This is so great and premium content for free ❤️😭

[@IgnacioFernandezQuesada]

Thanks!!!!

[@looxylook825]

Perfect ...

[@kryptstein]

Legend

[@panditdhamdhere]

Thank you very much ser for this video

[@sohansingh2022]

Thank you

[@R_Kh_]

Интересно ИИ смог бы создать layer 2 уровень с помощью polygon SDK?

[@chowdankei]

Hi Jarrod, always enjoy your videos and thank you for making this one!
I followed every single step on your video using Mac but failed to deploy after I ran
kurtosis run --enclave 'cdk-v1' --args-file params.yml --image-download always .
I received a completely different error and it's very long. Here are the last 2 lines.
Caused by: An error occurred creating an API container from image 'kurtosistech/core:0.89.0'
Caused by: An error occurred while getting the reverse proxy enclave network IP address for enclave 'd149d8f360fe425c8c45e7c98b279eb5', This is a bug in Kurtosis
Do you think you can shed some lights on how to fix this? Really appreciate your reply!

[@buegbu]

We are all having trouble installing it on mac, the tutorial should have been for mac Os users