Open-source, universally accessible, full-featured and available on more than 600 chains, Blockscout Explorer is your definitive gateway to the blockchain world.
1inch seamlessly unites multiple decentralized protocols, empowering users to perform efficient, user-friendly and secure operations in the Web3 space.
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1inch provides access to hundreds of liquidity sources across multiple blockchains. Its main components are the 1inch Aggregation Protocol, the 1inch Liquidity Protocol, the 1inch Limit Order Protocol and the 1inch Wallet – a fast and secure mobile application for storing, receiving, sending and swapping crypto assets.
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The 1inch Swap Engine, built on top of 1inch’s Aggregation Protocol and Limit Order Protocol, is a decentralized trading and matching system that connects DEX users with practically limitless liquidity. The 1inch Swap Engine executes trade orders using the Dutch auction model, providing more efficiency, flexibility and tunability than regular swaps or limit orders.
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Powered by the 1inch Swap Engine, Fusion mode enables users to swap tokens without paying any network fees and at the most favorable rates. In addition, Fusion mode offers users extra MEV protection. All swaps in Fusion mode are executed by resolvers – professional traders, who use the most sophisticated and efficient ways of protecting users’ swaps from MEV.
LayerZero is an omnichain interoperability protocol that enables seamless communication between different blockchains. It allows developers to build omnichain applications (OApps) that can interact across multiple chains as if they were on a single chain.
Why build with LayerZero at a hackathon
— Reach More Users: Deploy your dApp once and interact with users and assets across all supported chains.
— Unify Liquidity: Avoid fragmented liquidity; build DEXes, lending platforms, etc., that leverage a shared cross-chain pool.
— Simplify Development: Build complex cross-chain logic using familiar tools (Hardhat, Foundry, etc.) and LayerZero's contract standards (OApp, OFT, ONFT). Get started quickly with the create-lz-oapp CLI.
— Enhance Security: Benefit from a configurable, decentralized security model using Decentralized Verifier Networks (DVNs).
— Improve User Experience: Abstract away cross-chain complexities, offering seamless interactions without users needing multiple wallets or bridging steps.
— Innovate: Explore novel use cases like cross-chain governance, gaming, data queries (lzRead), and complex multi-step workflows (Composability).
Prizes
📖 lzRead Track ⸺ $4,000
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1st place
$2,500
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2nd place
$1,500
Develop a comprehensive solution using LayerZero Read (lzRead) to request, retrieve, and process external on-chain state from destination blockchains.
Your solution should use lzRead to perform cross-chain data queries and update state on the source or another destination chain based on the retrieved data.
Projects should focus on secure and efficient cross-chain data queries, using features like lzMap() and lzReduce() for off-chain computation.
Qualification Requirements
1. Utilization of LayerZero Read Features
Implement the lzRead protocol to perform cross-chain data retrieval from at least one supported destination blockchain. Use LayerZero's Blockchain Query Language (lzRead) to construct and execute data queries across multiple chains.
2. Effectively request and retrieve on-chain state data from a destination blockchain using lzRead.
Process the retrieved data and update the state on the source blockchain or another destination chain based on the retrieved information.Demonstrate seamless synchronization and utilization of the updated state across the involved blockchains.
3. Working Demonstration
Provide a working demo of your solution, showcasing the complete workflow from data retrieval using lzRead to state updates across chains. If the implementation is complex, ensure that all key functionalities are effectively demonstrated.
Build an innovative application that showcases LayerZero's horizontal composability features. Your project should break down a complex cross-chain workflow into discrete, sequential steps managed through LayerZero messages.
Demonstrate how you can trigger follow-up actions (composed messages) on a destination chain after an initial LayerZero message is delivered, potentially involving interactions with multiple contracts or protocols across different chains.
Focus on creating advanced, multi-step workflows that wouldn't be easily possible with traditional bridging or single atomic cross-chain transactions. Show how this approach improves user experience, reliability, or enables new use cases by decoupling operations and leveraging LayerZero's message-passing framework.
For outstanding projects utilizing any LayerZero feature (OApp, OFT, ONFT, lzRead, Composability) to build a compelling omnichain application.
This track rewards creative and well-executed projects that demonstrate the power and potential of LayerZero, even if they don't fit perfectly into the specific lzRead or Composability tracks. Show us your best omnichain ideas!
Qualification Requirements
1. Omnichain Messaging:
Implement omnichain messaging solution via LayerZero integration, ensuring the application is built on Endpoint V2 for seamless cross-chain communication.
2. Working Demo:
We encourage you to build a well-rounded and polished project. If your implementation is complex, please at least demonstrate a complete implementation.
Flow is a layer one blockchain with a powerful smart contract language (Cadence) and full EVM equivalence (any Solidity, smart contract, or protocol that works on Ethereum or an EVM L2 works on Flow). The network was designed from the ground up to enable consumer crypto applications that scale to mainstream audiences and seamlessly connect to digital ecosystems. It is based on a unique, multi-role architecture, and designed to scale without sharding, allowing for massive improvements in speed and throughput while preserving a developer-friendly, ACID-compliant environment.
Flow has been architected with a clear vision for the future of consumer crypto, and meticulously designed to address the shortcomings of earlier blockchains to ensure scalability, usability, and efficiency are not simply an afterthought. By incorporating critical protocol-level primitives, such as account abstraction and on-chain randomness, as well a powerful transaction model and scalability without sharding, Flow sets itself apart as a blockchain made for those interested in building apps for widespread adoption and developer-friendly innovation.
First announced in April 2021, the Pyth Network is the largest and fastest-growing first-party oracle for real-time asset price data and random numbers. Pyth delivers over 500 low-latency price feeds across digital assets, FX, ETFs, equities, and commodities to more than 50 blockchain ecosystems, securely and transparently.
The Pyth Network comprises some of the world’s largest exchanges, market makers, and financial services providers, who contribute their proprietary price data to the Pyth oracle for on-chain aggregation and distribution to smart contract applications.
Pyth introduces a pull oracle design which empowers apps to request or pull the latest price update to their native blockchain on demand. The Pyth Network has secured more than $300B in trading volume across hundreds of Web3 and Web2 applications.
Flare is the blockchain for data, an EVM smart contract platform that expands the utility of blockchain.
- With decentralized oracles built into the structure of the network, Flare is the only smart contract platform optimized for decentralized data acquisition - price & time series data, blockchain event & state data, and web2 API data.
- Flare's mission is to provide developers with decentralized access, at scale, and for minimal cost, to all of the data and data proofs they need to build new blockchain use cases that are more relevant to more people
Committed to powering a digital economy underpinned by trust, Hedera stands apart as the leading enterprise-grade public blockchain on the market. The platform’s unique hashgraph technology ensures lightning fast performance combined with the highest levels of security and efficiency.
With an open-source ecosystem and fixed, low fees, Hedera equips DeFi and enterprise developers with the predictability, tools, and services they need to build the next breakthrough application. The Hedera network is governed by a diverse council of the world’s leading institutions to ensure transparent and fair decision-making.
By empowering the development of applications that address real-world challenges across DeFi, tokenization, AI, digital identity, and more, Hedera is building a new foundation for decentralized trust.
For more information, visit www.hedera.com, or follow us on Twitter at @hedera, Telegram at t.me/hederahashgraph, or Discord at www.hedera.com/discord. The Hedera whitepaper can be found at www.hedera.com/papers.
vlayer aims to unlock web3's potential with robust data infrastructure. We simplify zero-knowledge proofs, making privacy and verification tools accessible to smart contract developers on EVM compatible chains. By integrating web2 data (web and email proofs) into web3 apps, we support a decentralized, secure, and efficient internet.
We are on a mission to connect the otherwise disconnected worlds of Web2 and Web3.
We are building a new category - verifiable data infrastructure. Our all-in-one infrastructure layer allows developers to extract, verify and integrate real-world data into Ethereum smart contracts, in the form of trustless claims. By integrating web2 data (web and email proofs) into web3 apps, we support a decentralized, secure, and efficient internet.
Our technology is powered by state-of-art Zero Knowledge Proofs and optimised to provide the best developer experience.
Key features:
- Time travel: leverage history of on-chain data in your contracts
- Teleport: compute cross-chain data from EVMs
- Email Proofs: tap into trusted contents of emails
- Web Proofs: bring private Web2 data on-chain
Benefits of building with vlayer:
- You can use Solidity and existing tooling like Foundry
- No needs to learn new DSLs or programming languages
- Access the key data sources directly from your Solidity smart contract
Prizes
🦸 Most inspiring use of vlayer superpowers ⸺ $4,000
Create a dApp that uses verifiable data in on-chain contracts.
Examples:
- Airdrop for successful DeFi traders,
- Using LLM outputs by smart contracts or web3 games
- Proof of contribution into DAO/Github to be eligible for airdrop
- RWA use-cases like attesting ownership of certain items using email/web proofs
- Consumer facing app that allows email usage for AA wallet recovery
Qualification Requirements
This application has it all - a great idea and best-in-class implementation. The application must use at least one of vlayer’s four superpowers, as well as incorporating both Prover and Verifier contracts.
Show how private data coming from web2 services can be used on-chain.
Examples:
- Proof of repost / reshare / mention on social media
- Proof of balance in Revolut/PayPal
- Proof of ARR/MRR in Stripe/Shopify
- Proof of Reserves in Coinbase / Binance
Qualification Requirements
The application must use Web Proofs, as well as incorporating both Prover and Verifier contracts.
📧 Best use of Email Proofs ⸺ $2,000
Show how emails can be used on-chain.
Examples:
- Controlling AA wallet with email
- NFT airdrop for people owning certain email domain
Qualification Requirements
The application must use Email Proofs, as well as incorporating both Prover and Verifier contracts.
🌀 Best use of Time Travel OR Teleport ⸺ $2,000
Show how historic and cross-chain data can be used on-chain.
Examples:
- Credit score for wallets using USDC or other ERC20
- Rewards/Airdrops for owners of certain NFT/ERC20 tokens
Qualification Requirements
The application must use Time Travel OR Teleport, as well as incorporating both Prover and Verifier contracts.
Rootstock is the top and longest running Bitcoin Sidechain, aiming to address the shortcomings of Ethereum by leveraging Bitcoin's unmatched stability, security, and economic power.
Rootstock uses Solidity programming language, making it fully EVM compatible. You can build any EVM dApps and products on Bitcoin using Rootstock without any additional tools or knowledge.
This is a unique opportunity to build the foundations bridges between Ethereum, Solidity and Bitcoin.
Yellow is a clearing Network that uses state channels to facilitate trading and settlement through smart contracts and on-chain margin accounts. We are contributor of erc7824.org and looking for comments on our initiative. State Channels are a very powerful way to scale dApps in a chain agnostic way. Yellow leverage it to make trading fully non-custodial, cross-chain and infinitely scalable.
The Ethereum development environment for professionals by Nomic Foundation.
Give the Hardhat 3 alpha a try: Rust rewrite, Solidity tests, multi-chain, and more.