Sound Capsule

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  Explore sound

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  Upload your sound

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  Connect your wallet

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  The tech stack of Sound Capsule

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  Sound Capsule · NFT Minting Flow

Inspiration

We asked ourselves: What if sound could live forever on Bitcoin?
From a baby’s first words to a hometown accent, sound captures emotions that images and text often miss. We wanted to preserve these precious moments—immutably and decentrally—on the Bitcoin blockchain.

What it does

Sound Capsule** is a Bitcoin-based audio NFT platform that lets users upload and preserve meaningful sounds—such as voices, laughter, or events—by minting them as Ordinals inscriptions. Audio is stored on IPFS and bound to the blockchain via Bitcoin or Layer 2 minting.

How we built it

Languages & Smart Contracts

• JavaScript (frontend & backend), Python (AI audio scripts), Clarity (Stacks smart contracts)

Frontend

• React.js, Next.js, RainbowKit + Wagmi (wallet connect), TailwindCSS

Backend

• Node.js, Express.js, Pinata SDK, OrdinalsBot API

Blockchain & Protocols

• Bitcoin Ordinals, Stacks, IPFS, Taproot, Clarity

Tools & Infra

• GitHub, Vercel, Clarinet, Excalidraw, Postman, ChatGPT, Grok，Gemini

Challenges we ran into

• Bitcoin Core sync is slow and resource-intensive (700+ GB)
  
• Inscription costs are high ($70+ per 123KB audio)
  
• IPFS + Ordinals + UI + wallet integration is complex
  
• AI hallucinations from ChatGPT misled us with false configs
  
• Team stress and decision fatigue under tight deadlines

Accomplishments that we're proud of

• Completed MVP: upload → store on IPFS → mint → playback
  
• Team mastered wallet creation, Ordinals, Stacks, Pinata
  
• Resolved full-stack challenges under pressure
  
• Learned to use AI wisely for architecture and bug-solving

What we learned

• How to connect Bitcoin and IPFS
  
• How to test and mint Ordinals
  
• Using Clarity smart contracts on Stacks
  
• Finding and verifying tech answers with ChatGPT/Grok/Gemini
  
• Collaborating through log tracking, Notion, and version control

What's next for Sound Capsule

• Add multi-wallet support (MetaMask, Coinbase, WalletConnect)
  
• Improve front-end design and UX
  
• Explore future unlock mechanics (Time Capsule)
  
• Consider L2 solutions for cost-efficient sound NFT minting
  
• Refactor to reduce code duplication and hallucination traps from AI

Built With

• bitcoin-ordinals
• chatgpt
• clarinet
• clarity
• excalidraw
• express.js
• gemini
• github
• grok
• ipfs
• javascript
• next.js
• node.js
• ordinalsbotapi
• pinata
• postman
• python
• rainbowkit
• react.js
• stacks
• tailwindcss
• taproot
• vercel
• wagmi