A Hacker's Guide to ETHIndia 2023
Tags: ethereum, blockchain, solidity, hackathon
Published: 2023-11-27 07:04:29

Hola Hackers!!, taking place from December 8-10, 2023, ETH India 2023 Hackathon will gather thousands of participants who will compete for over millions in bounties and prizes, as well as up to millions in investment capital. 
Evolving beyond a once-a-year event, ETHIndia will function as an incubator and launchpad to create year-round support for early-stage blockchain projects.

So being the biggest Ethereum Hackathon on the face of the earth, some confusions seem to be natural but worry not we'll get you through to some of the most established projects in Web3 space and how to utilize them to get your way to the delicious bounties and grants, but more than grants team-spirit is required and if you don't have the team there are thousands like you, so buckle up and find a team-mate directly in the hackathon.

Head onto the [ETHIndia](https://ethindia.co/) website to register now and read below more a less melodramatic journey

**What Projects can be built?**
The essence of Ethereum Hackathons is to build anything you like, may it be a web3 protocol or just a simple tuning software but it always helps to go on through the list of Sponsors and build your project around their Protocols and offerings to get that juicy prizes and recognition, you have been waiting for.
Below is the list of sponsors that you can incorporate in your own projects along with how to use their services which range from every aspect of development including every tool that you need and [Bitquery](https://bitquery.io/) for your data needs.

**Defi - Build using 1inch**
1inch is an OG in the defi space, it is your gateway to seamless crypto swaps and was founded by hackers in ETHIndia 2019 only, so whether you want Wallet and dApp integrations or make protocols for lending, borrowing, margin trading, 1inch has got your back.
Let's talk about the core Protocols offered by 1inch

Aggregation Protocol V5 - The blue-chip offering of 1inch which provides liquidity across multiple protocols, chains, and liquidity sources.

Limit Order Protocol V3 - Don't like the current prices of tokens across any liquidity source, put limit orders of the price you want, that too on-chain.

Spot Price Aggregator - Want to exact and non-vulnerable price data across using multiple Oracle services in 1 click, 1inch got you. Just head over to this [contract](https://explorer.bitquery.io/ethereum/smart_contract/0x07D91f5fb9Bf7798734C3f606dB065549F6893bb)

Fusion Mode - Tired of being front-run by the annoying MEV bots and want gas-less transactions, build powerful Dapps using this [SDK](https://docs.1inch.io/docs/fusion-swap/fusion-sdk/for-integrators/sdk-overview)

Those are the core offerings of 1inch but if you need easily indexed data from over 40 chains that can help you build more robust Dapps and APIs, head over to [Bitquery](https://bitquery.io/). 
For Example, if you got 1inch integrated into your next-gen Defi App but are confused about what the lending and borrowing rates are for different protocols over different chains, write a graphQL query to get exactly what you need or hover over [Bitquery Explorer](https://explorer.bitquery.io/ethereum/gas) to get the current and historical gas price raw indexed data on Ethereum chain.
Just like this query, provides you with the DAI's average liquidity Rate, Stable Borrow Rate, and Variable Borrow Rate described in the graph below

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/jp50olav4d45pk7t9dfm.png)




**L2's to build upon the get the cheap, yum yum gas fee**

Now, we'll talk about the hottest L2s in the space now to build your Dapp upon

**Polygon** - It all began in the early days, when the founders founded their tribe at ETHIndia '18, laying the roots for the Indian Web3 landscape.

 Their mission? Enhance [Ethereum](https://twitter.com/ethereum)'s limitations and create a seamless, interconnected ecosystem.
Fast forward to 2023, Polygon metamorphosed, releasing its grand vision — Polygon 2.0, the roadmap to sculpting the Value Layer of the Internet.
The proof is in the pudding: Polygon unveiled Polygon Hermez, a zk-rollup scaling marvel that revolutionized transaction security and speed.

One of their standout achievements is the [Polygon Chain Development Kit (CDK)](https://wiki.polygon.technology/docs/cdk/). This powerful tool simplifies the creation of ZK-powered L2 chains on Ethereum.
Once again to build a robust Dapp, you need Robust Data. Again Bitquery is to rescue, with an explorer explicitly made for Polygon with all the APIs you'll ever need for Polygon data ranging from raw indexed bock data to Dex Trades API to [Miner Distribution APIs](https://explorer.bitquery.io/matic/miner_distrib), it's all there.

**Scroll ZKP** - Scroll is the first fully EVM-compatible ZK-Rollup!!, what does that mean dumbo? It means that the code written on Scroll is directly converted in EVM bytecode rather than converted into another gibberish before being compatible with EVM. So now you can write Solidity Dapps without changing their source code by a fraction of a hair. Still puzzled head over to the [official documentation](https://docs.scroll.io/en/home/)

Backed by external audits & grounded in battle-tested cryptographic libraries, they emphasize a robust security posture.
After 15 months of testnets, 450K+ smart contracts deployed, 90M+ transactions, & 280K ZK proofs, Scroll officially launched on the mainnet in October '23!

Scroll believes in meeting developers and users where they are. They actively cultivate transformative ideas globally, fostering a diverse community that's shaping the future of Ethereum.

**Base L2** - Yup, another one of the bigshots incubated by Coinbase and progressively decentralizing by each day, Base is a secure, low-cost, builder-friendly Ethereum L2 built to bring the next billion users on-chain.

You can use it interoperably with Coinbase Exchange to make DeFi-CeFi Dapp incorporating best of the both worlds.
Are you an EIP geek or tired of using the gen-old EOA? Use pre-made ERC4337(Account Abstraction) APIs, gasless transaction API, easy fiat onramps, and more.
Whoa, that was too many to choose from huh, not the next section is critical for any Dapp to be truly decentralized, the big boss itself - decentralized storage

**Decentralized Storage Providers**
Whether you are building a game, a multi-chain trading app, or even some crazy analytic Dapp, you'll need storage. Welcome to open decentralized storage services

**Filecoin** - Filecoin is building open services for data. Their vision revolves around the three pillars: storage, retrieval, and data transformation. The goal is to form a credible alternative to the legacy cloud infrastructure, both in scale and suite of data services.

The launch of FVM earlier this year represents a significant milestone, enabling developers to shape the future of open data economy applications.

 Now, you can build smart contracts, Data DAOs, and more on Filecoin's vast decentralized storage network!
So how does it work - it is a peer-to-peer network that stores files, with built-in economic incentives and cryptography to ensure files are stored reliably over time and is built on top of IPFS protocol.

Filecoin also supports a wide range of formats of data, including audio and video files.
It's okay if you don't understand how it works, cause the next protocol solves that exact problem.

Once again, head over to Bitquery's [Filecoin Explorer](https://explorer.bitquery.io/filecoin/transfers) to get in-depth data on miners, validators, and your data storage transactions.
If you are just like a lost baby girl not able to find the validator suited for your data needs, see all their on-chain Summary


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/swi9910fztw1kh68o4zc.png)

**Lighthouse** - It is a perpetual file storage protocol that allows you to pay once for your files and store them long-term.

The aim is to move users from a rent-based cost model where they rent their files on cloud storage to a perpetual storage model. It is built on IPFS and Filecoin, with smart contracts to be deployed on multiple chains like FVM, Optimism, Polygon, Solana, etc.
It uses the miner network and storage capacity of the Filecoin network and IPFS content-addressing system.

So, forget about the recurring payments to Filecoin Validators, forget about the its-bits of managing the data bots. Here is the [link](https://docs.lighthouse.storage/lighthouse-1/tutorials/minting-nfts-on-evm-chains) for a great tutorial for storing the metadata of Minting NFT on multiple EVM chains at once!!

Last one I promise, if you don't like EVM, how about another L1 with its unique benefits

**Celo** - It is a mobile-first L1 chain with low-cost, multi-currency gas fees and an ultralight client for your ultralight Dapps.
Celo was designed to enable a new universe of financial solutions accessible for mobile users, creating a global financial ecosystem where an end-user can onboard into the Celo ecosystem with just a mobile number. 

If you want your Dapp to scale in a market such as India, you can make your payments as easy as sending a text. Head over to [Developer docs](https://docs.celo.org/developer) and see it yourself.
Still in doubt about choosing Celo over Ethereum head over to the gas analytics data over to [bitquery Celo Explorer](https://explorer.bitquery.io/celo_mainnet/gas) to see the difference as depicted in the graph below with average transaction cost costing as less as $0.00075


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/n9a8xgn65l91drt51wxw.png)

**Time to Wrap it Up!**
No matter if you’re new to blockchain or a pro, it’s like a playground for everyone! The worst thing that can happen? You create something cool, make friends, and have a blast. But the best part is way cooler! Imagine building something amazing, winning cash, getting funding, making tons of new friends, AND having an absolute blast! 🎉