Artyug

Provenance for physical art is paperwork. A certificate of authenticity is a piece of card that can be forged, lost, or separated from the work it describes, and once a piece changes hands twice the chain of ownership is usually just somebody's word.

I wanted to prove I could build a consumer product that takes real money from real people, not only infrastructure other developers consume. Art was a good test because the verification problem is genuine rather than invented.

A mobile-first marketplace in Flutter with an NFC tag embedded in the physical piece. Tapping it resolves ownership against Solana, so provenance stays attached to the artwork itself rather than to a document. Artists list work, buyers pay with real money, and ownership transfers are verifiable after the sale.

• Flutter mobile application
• NFC verification flow
• Solana ownership verification
• Artist onboarding and listings
• Real-money payment integration

• Flutter
• Dart
• NFC
• Solana
• Node.js
• PostgreSQL

NFC behaves differently across Android devices and the failure modes are all physical — tag placement, read range, what happens when the tag is damaged. None of that shows up until you are holding an actual canvas.

Consumer products live or die on the first thirty seconds. Artists did not care about Solana at all; they cared whether listing a piece took two minutes or twenty. The verification was the point of the product and never the reason anyone used it.