VeriStitch · x402
A cryptographic provenance layer for high-end accessories. Brands embed encrypted NFC tags; users pay 0.01 USDC to instantly verify authenticity via an HTS transfer signed call. Each scan triggers a signed transaction that updates the item's 'last-seen' status on Hedera, creating a tamper-proof chain of custody without friction or gas-stress. Pay-per-scan eliminates subscription barriers for second-hand verification.
The primitive.
Access to the accessory authentication engine is metered with x402: 0.01 HBAR or 0.01 HTS USDC per call, paid from the embedded wallet, so fashion designers — or the agents working for them — pay per query and get a HashScan receipt every time.
Why this primitiveLegacy authentication relies on expensive appraisals or static certificates. By making the 'verification' a high-frequency, low-cost micropayment, we turn fashion items into active data-producing nodes. Brands earn a stream from secondary market activity (validation fees), and buyers gain instant certainty for a cent.
Required keys.
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The build prompt.
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Market sizing.
Indicative figures for hackathon pitches — refine with your own research before raising.