rigami.
All work
/// Hip-Hop · Auctions· Repeat client

HipHopGrails

The flagship auction destination for hip-hop memorabilia and celebrity drops — engineered on Azure, .NET, Next.js and PostgreSQL.

HipHopGrails

HipHopGrails is the breakout auction platform for hip-hop culture — the first destination of its kind, often described as the Sotheby's of the streets. We built it end-to-end on a Microsoft Azure cloud, with a .NET microservices core, a Next.js front end and a PostgreSQL data layer. From the bidding engine to consignment workflows, identity, escrow and live event run-of-show, every layer is ours.

Our role
  • Product strategy
  • Auction platform
  • .NET microservices
  • Next.js front end
  • Native iOS + Android
  • Ops + run-of-show tooling
Stack
.NET 8Next.jsReact NativePostgreSQLAzure App ServiceAzure SignalRStripe
At a glance
Cloud
Microsoft Azure
Backend
.NET microservices
Database
PostgreSQL
Front end
Next.js + React Native
Surface
Web · iOS · Android
Verticals
Music · fashion · culture
/// What we shipped

Highlights from the
engagement.

  • Bidding engine with anti-snipe, soft-close and live-event extensions — built on Azure SignalR for sub-100ms updates at scale
  • Consignment and seller flows for labels, artists, curators and estates
  • Escrow, KYC, AML and payouts — Stripe + specialist rails for high-value lots
  • Operator tooling for event run-of-show, inventory, moderation and live drops
  • Native iOS + Android apps with push, deep-linking and offline cart state
  • Compliance, audit trails and dispute workflows fit for high-value collectibles
/// Up next

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Daily fantasy and real-money sports wagering, engineered for compliance and scale.