Sienna

Sienna is a stablecoin payments tool on Solana aimed at small teams that settle salaries and supplier invoices in USDC. It handles the friction of cross-border payment: bank wires charge per transfer and arrive late, while paying wallet by wallet lacks batching, approval and reconciliation.

The platform groups payments into batches and settles them on Solana in USDC, with recipients claiming by address or payment request and payment status traceable in one interface. On-chain fees are denominated in lamports and scale weakly with batch size, so per-transfer cost depends mainly on network congestion rather than the amount moved.Transfers in a batch confirm within the same block, so arrival time does not depend on batch size.Fiat on-ramps and off-ramps run through third-party channels, so the on-chain layer only moves value between accounts.