Proof of purchase → Proof of ownership
Scan.Prove.Own.
Turn everyday purchases into programmable ownership.
STOCKBACK connects attested purchase receipts with on-chain ownership rewards, held in brand vaults you control.
Robinhood Testnet · Demo Assets
Reading the registry…
- Scan
- Prove
- Verify
- Own
A purchase, captured.
Scan any receipt. It never leaves your hands.
NIKE
Why Stylus
Verified in Rust.
9.2×
less gas than Solidity to verify Ed25519 signatures.
Not points
Own the brandsyou buy.
- NikesbNKEdemo asset
- ApplesbAAPLdemo asset
- StarbuckssbSBUXdemo asset
One ERC-4626 vault per brand. Testnet assets are fictional demo tokens, not securities, and not affiliated with these brands.
Ownership statement
Live · demo wallet 0x5aB3…4954
Brands you own
Reading chain…
Values in demo units: by testnet convention 1 m-unit = ₹1 of demo exposure. Not market prices, not securities.
Evidence
Not every proofproves the same thing.
- 1Live demo
Merchant-signed demo receipt
Signature verified: no field changed since the merchant signed it. The merchant itself is simulated, not a real partner.
- 2Live demo
Attested photo / OCR
Read from a photo or typed, then signed by the demo attester. That a real purchase happened is not independently established.
- 3Roadmap
Verified payment / order evidence
Proof from the payment or order source itself (e.g. zkTLS). Roadmap, not implemented.
Evidence, verification and ownership, kept apart.
- One claim per receipt
- Capped rewards
- On-chain eligibility
- Merchant signatures checked
- Admin-less vaults
- Testnet only
