PAYMENT EXPERIMENT
MemPay
A mobile payment prototype connecting a wallet, ledger and issuer integration boundary.
ARCHITECTURE NOTE
01wallet
02ledger
03issuer
Expo / NestJS / Solana
01 / The problem
A payment experience spans mobile interaction, transaction records and external providers. These concerns need clear boundaries.
02 / Technical approach
An Expo client and NestJS API separate the wallet flow, ledger and issuer adapters. Mock integrations allow the flow to be explored before live providers are ready.
03 / Outcome & boundaries
An architecture prototype with tests and CI in the repository. The issuer remains mocked; funded swaps and the mobile flow need further validation. This is not a production payment service.