# Exploring Ethereum and L2s with a block explorer

- Channel: [ETH SEA](https://streameth.org/eth_sea)
- Date: 2024-11-11
- Duration: 14:14
- Watch: https://streameth.org/watch/673180fd80d989c5b76680ad
- Download: https://vod-cdn.lp-playback.studio/raw/jxf4iblf6wlsyor6526t4tcmtmqa/catalyst-vod-com/hls/2392l244wrdtfei6/720p0.mp4

## Transcript

So for this first keynote, we'll be diving into how we can discover powerful on-chain insights from the use of a block explorer. So on the topic of exploring Ethereum and L2s with a block explorer, please join me in welcoming TY, content writer from Etherscan. Welcome, TY. Hello, good morning everyone. So good to see you here. Hope my head is not too bright for you. Okay, so a short intro. My name is TY and I come from a community called Ethereum Kuala Lumpur based in Malaysia. And I'm also a content writer at Etherscan. So for the first session of the day, let's start with something simple, right? We'll do exploring Ethereum with a blog explorer, and then later on we'll touch a little bit about Ethereum's ever-growing Layer 2 ecosystem. Right. First, before we proceed, some disclaimers. Today's sharing session is solely for informational and educational purposes only. It should not be taken as investment nor financial advice. Okay, before we start also, I've prepared a spreadsheet of useful links that you can follow along during this talk. Or you can just go to the top bit.ly slash ifc dash explorer. And then there will be like a bunch of links for you to follow through the sharing session today. You have like 10 seconds. Okay. All right. So before we go into what is a block explorer, let's just quickly go through how is Ethereum being used today. I've prepared like four examples. The first example is no loss lottery protocol. So today, Ethereum users, they can actually enter in the lottery without paying anything, right? All they have to do is just deposit some of their savings into this protocol that they can withdraw at any time. And if they do have a winning, then the winnings are just to keep, right? Okay, so secondly, currently on Ethereum, you can also take out a loan without putting down any collateral. And thirdly, there's this, long time ago, there's this out $2 million worth of dividend at the start of this month on Ethereum. Okay, so then you'll ask, why? Why Ethereum? And how does Ethereum work? So, have anyone tried GrabBike in Bangkok already? Like, they're super amazing, they're fast, they get you to your destination quick. Okay, so just imagine Ethereum as this network of GrabBikes, right? Where every 12 seconds, one random GrabBike rider will be chosen to process transactions from a sea of people, right? So everyone here, they will be queuing up and they want to, you know, submit transactions to the Ethereum network. So this chosen rider, it will actually, you see the box there in the back, so he will like pack all the transactions into this box and then once he is done, he will be sending this box to all the GrabBike riders in the whole Ethereum network for them to verify. So how they verify? They just go through the transactions and then they'll see, okay, if it's legit, they'll just give a stamp of approval, right? And then once this box of transactions, they have been verified, it will be sent into like a super secure warehouse to be stored. Okay. And then all the transactions that is stored in a warehouse can be actually accessed by everyone in the world. Yeah. So how can we actually, you know, the use cases that I shared just now and then how does Ethereum work, how can we actually verify this? So as I say just now, all the transactions are actually public that is stored in the warehouse. So a block explorer like Etherscan, we will send someone to the warehouse, right? We will actually retrieve all the transactions in the warehouse and then we will display it nicely on a website. So, yeah. So that's a block explorer. It's a website that shows you transactions on the Ethereum network. So currently, if you can see here, So, there's a blog explorer. It's a website that shows you transactions on the Ethereum network. So, currently, if you can see here, there is over a million GrabBike riders working very diligently to secure the Ethereum network. Okay, next. And then, as you can see on the blog explorer page, Ethereum has processed over 2.5 billion transactions over the last nine years. So next, if you go to the blocks page, you can actually see a new block is being created every 12 seconds. Just like how I said, every rider is being chosen at random to process the transactions. And if you pick a block, if you open up a block, you can actually see how many transactions are in there. And if you want to go one level deeper, you can actually see the details of a single transaction, including how much value is being transferred and how much transaction fees do they pay to process this transaction. yang telah dihantar dan berapa banyak keuntungan transaksi yang mereka bayar untuk memproses transaksi ini. Jadi anda dapat melihat keuntungan transaksi sebagai peralatan atau peralatan atau gas untuk pembali kereta kereta, mereka bekerja dengan begitu berhati-hati untuk jaringan Ethereum, kami hanya menyedarkan beberapa gas mereka. Tetapi sebenarnya, gas di Ethereum adalah unit komputasi yang berbeza yang mengukur seberapa rumit perjalanan anda. Jadi jika perjalanan anda lebih rumit, ia akan menggun dapat menginspek kewangan mereka, berapa banyak Ether mereka memeg jumlah penjualan untuk token ini dan transaksi masa lepas, sejarah penghantaran token ini. Mari kita kembali kepada kes guna yang saya jelaskan sebelum ini, kes guna yang ada 4. Pertama, ia akan menjadi protokol lottery yang tidak terlupa. before, the four use cases, right? So firstly, it will be the no-loss lottery protocol. So how can we actually ensure that what this protocol said is what they actually do? So we can easily just verify this on-chain, whereas this protocol, they have deployed a thing called smart contract. So you just have to read their code on the smart contract and see, okay, if the code looks okay, then you can just interact with it with no issues, right? But if the code is not okay, then you should tell the world about it. Like, hey, be careful of this protocol because it will steal your money. But what if you don't know how to read a code? You don't know how to read smart contract code. So then, no worries. Nowadays, AI is our best friend. So via this tool, Code Reader, you can actually push this smart contract code, feed it to the AI, and then ask simple questions like, hey, what does this smart contract code, feed it to the AI, and then ask simple questions like, hey, what does this smart contract do? And can this smart contract actually steal my money if I deposit into it? Okay, so after you ask this question, the AI will just answer your question accordingly. Okay, so for the second use case that I mentioned, user can actually take out a loan without putting down any collateral. So the name of the game is Flash Loan. So in this single transaction, just one single transaction, look at how many action there is. So this user actually borrowed 50,000 ETH from anguruan untuk mendapatkan token Maker ini, yang sebenarnya adalah token pemutaran. Pengguna ini menggunakan token ini untuk memutarkan protokol, kemudian setelah mereka selesai, mereka membalikkan token kembali ke ETH, mereka membeli balas dana, 50,000 ETH, lihatlah, dengan jumlah keuntungan yang kecil. Ya. Jadi ini adalah cara cara flash loan berfungsi. Dan untuk kes pembukaan ketiga, iaitu... ini adalah petikan buku pelajar pelajar. Anda boleh cari link ini di pembukaan, iaitu bit.ly slash ifc dash explorer. Anda boleh membacanya anda sendiri nanti. Dan kemudian akhirnya ini adalah kisah penghantaran dendam BlackRock. Mereka menghantar $2 juta yang berharga dari US Dollar dan jika anda dapat melihat dalam kisah ini, kerana ia sedikit lebih rumit, BlackRock telah menghantar sekitar $200 yang diperlukan untuk pembayaran transaksi. Baiklah, jadi pengguna seperti kami tidak benar-benar ingin membayar banyak pembayaran transaksi semasa menggunakan Ethereum, bagaimana jika aplikasi favorit yang saya gunakan mempunyai transaksi yang sangat rumit, maka saya tidak mahu membayar beberapa ratus dolar hanya untuk memproses transaksi di Ethereum. So, soalan seterusnya adalah, bagaimana kita boleh membuat Ethereum lebih berkualiti dan lebih terdapat kemampuan kepada orang seperti kita? So, the next question is how do we actually make Ethereum more scalable and more accessible to people like us? For the past few years, the Ethereum community or the ecosystem has actually embarked on a roll-up centric roadmap. Anda dapat melihatnya dengan mudah, ia adalah bahawa, projek layer 2 ini, mereka mencipta jaringan Rider yang baru yang berfungsi dengan sama seperti Ethereum. Tapi perbezaannya adalah, ketika rider di jaringan layer 2, ketika mereka memproses transaksi, mereka juga perlu menghantar sumber transaksi When they process transactions, they also have to send a summary of transaction to the layer 1 Ethereum rider network to be verified. So this is the gist of how a layer 2 works. And according to L2Bit, which is a website that actuallyjuan terbaru dalam ekosistem layer 2 di Ethereum. Sebenarnya, sekarang ada lebih daripada 90 layer 2 yang ada di luar sana sekarang. Untuk sebahagian daripada ini, ada juga versi Etherscan dari Blok Explorer yang ada. Ada beberapa contoh seperti BaseScan, RB Scan dan EclipseScan. Pada pangkalan ini, ini sebenarnya adalah contoh. Arbitrum adalah pelayanan kedua di Ethereum. Apabila mereka memproses transaksi sendiri di layer 2, mereka akan perlu menghantar sumber transaksi secara regular ke Ethereum untuk dipercayai di Ethereum. Jika anda baru dengan Ethereum, anda mungkin bertanya seperti, Hey, sekarang ada banyak L2. Saya tidak ingin ingatkan URL Explorer yang boleh anda pilih. Adakah ada sebuah Explorer yang mudah untuk saya masukkan has transaksi saya atau untuk saya mengetuk alamat walet dan ia boleh diselesaikan secara automatik untuk saya? Kami juga mempunyai produk ini have this product called BlockScan Multi-Chain Explorer where you can just input your address and a transaction hash, then it will show you like it will automatically resolve to the chain that you're using. So an example is if you include this transaction hash, then it will know that your transaction is from the scroll layer 2. jika anda mengunakan hash transaksi ini, maka anda akan tahu bahawa transaksi anda berasal dari scroll layer 2 dan jika anda ingin melihat detail penuh transaksi ini, anda boleh pergi ke link di bawah dan melihatnya di scroll scan. Anda juga boleh menyalakan alamat anda ke dalam Explorer ini dan ia akan menunjukkan anda pandangan yang memahami tentang kandungan kripto yang sedang berada di sini hanya terkait dengan jenis syarikat yang kami sokong sekarang. Jadi ya, itu sahaja. Adakah anda semua ada pertanyaan? Okey, jika tidak ada apa-apa, itu sahaja. Terima kasih. Okay, if there's nothing, then that's all. Thank you. All right, thank you very much, TY.