MemeChain

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Inspiration

This was also our first time working with blockchain technology. We started learning about blockchain with the help of AI, explored how Polkadot works, and understood its multi-chain structure. Once we felt confident, we wanted to create a fun project that millions of people could use something enjoyable, easy, and powered by real blockchain interactions. That’s how we ended up building what we built today.

Memes are everywhere, but proving who created them is almost impossible. We thought: what if anyone could create a meme and lock it permanently on the blockchain with one click? That idea became MemeChain.

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What it does

MemeChain lets users create custom memes in the browser and store them permanently on the Polkadot Paseo blockchain. It’s a simple Web3 demo that shows how everyday creativity can be recorded on-chain.

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How we built it

We used React + Vite for the frontend, Talisman Wallet for signing, and Polkadot’s Paseo AssetHub chain for on-chain storage. The app uploads a user-generated meme, prepares metadata, and sends a real transaction to the blockchain using Polkadot.js. Hosting is done using Netlify.

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Challenges we ran into

• Connecting correctly to the right testnet chain was tricky.
• Managing wallet permissions and RPC issues caused delays.
• Understanding how Paseo chains differ (Relay, AssetHub, EVM) was confusing at first.
• Getting real PAS tokens into the correct chain instance also took time.
• Using AI and navigating Polkadot documentation.

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Accomplishments that we’re proud of

• We built a fully working on-chain meme storage system.
• Users can create a meme, click a button, sign a real transaction, and see the meme stored permanently.
• We connected a clean UI to a real blockchain flow  no simulators or demo data.
• First time building a full Web3 project.

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What we learned

• How Polkadot’s multi-chain ecosystem works.
• How to interact with the blockchain directly from a web app.
• How to handle wallets, RPC endpoints, and real transaction signing.
• How to make Web3 simple and supportive for users.

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What’s next for MemeChain

• Mint memes as NFTs.
• Add profiles, collections, and shareable on-chain meme feeds.
• Introduce AI-generated meme templates.
• Deploy to a live environment for public use.

Built With

• polkadot
• react