Random Access Memories - dApp

Demo - https://www.loom.com/share/e5aedafd5e6744a6b1e3a9372294b6bd

Built at Polygon Fellowship – Class of 2022.

Random Access Memories is a decentralized image‑sharing dapp that lets users to post images to an anonymous network of contributors and scroll a shared feed of all photos.

What it does

• Lets users post images to a common pool.
• Shows a global feed of all images from all contributors.
• Uses wallet-based login instead of usernames and passwords.
• Anchors image data and ownership using web3 tools.

Why we built it

Most social media apps are centralized. They control:

• Who can publish and see content.
• How long content stays up.
• How feeds are ordered.

We wanted to explore how an image feed could work if it was:

• Backed by wallet identities instead of app accounts.
• Using IPFS / decentralized storage for media.
• Running on Polygon so it stays cheap to use.

How it works (high level)

• Users connect their wallet.
• When they upload an image:
  • The image is stored off‑chain (on IPFS).
  • A Solidity contract on Polygon stores a reference (hash) plus the sender address.
• The feed simply reads all stored image entries from the contract and renders them.

Tech stack

• Frontend: React
• Smart contracts: Solidity
• Blockchain: Polygon
• Storage: IPFS - Interplanetary File System