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A phone showing a glowing QR pattern, with a certificate card and a token emblem above it, scanned by a handheld reader at an event entrance.
#web

Uproof

NFT ownership certificates for events

> for union avatarsplatform · 2022
01· the project
> A project for Union Avatars.

Owning an NFT, proven on your phone.

Uproof turns owning an NFT into something you can show at the door. Built for Union Avatars, it lets holders log in with their wallet, see their NFTs on Ethereum and Polygon, and carry a certificate of ownership on their phone; organisers create events and scan those certificates to let people in.

Certificates can be revoked, and every event in their life is recorded. We built the API and the web app in AdonisJS and TypeScript on PostgreSQL, with MetaMask login through Moralis, phones linked by QR code and a dedicated test suite. Interface design by Javier Álvarez.

> cat /works/nft-proof.md
TYPEPLATFORM
CLIENTUNION AVATARS
YEAR2022
built with
  • AdonisJS
  • TypeScript
  • PostgreSQL
  • Moralis
  • MetaMask
#web
02· in numbers
2> blockchains (Ethereum, Polygon)
6> data models
1> QR to link a phone
03· how it works
Your NFTs: the wallet's NFTs as cards, each with its number, date and a Create certificate button, and a filter for Polygon and Ethereum.
01

Connect

Holders log in with MetaMask and see the NFTs in their wallets.

Your devices: a QR code to connect a new device, beside the list of linked devices.
02

Link

A phone is linked by scanning a QR code from the web app.

Your certificates: certificate cards for the wallet's NFTs, some expired with a Refresh button, one open as a QR code with its countdown.
03

Certify

Each NFT gets a certificate on the phone, which can be revoked.

Your Events, the organiser view: a New event button and a card to create the first event.
04

Check

Organisers create events and scan certificates at the entrance.

04· gallery
Your devices with the Edit device name dialog open over the list of linked devices.
> nft-proof · 01
05· credits
for union avatars. WEB - API. Design - Javier Álvarez. 2022

Working on something like this? Tell us what you need.

06· related project
> cd /works/union-avatars
Union Avatars> Web platform
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