Money should move like a whisper.

Public blockchains exposed every transaction to the world. Hvisk uses zero-knowledge proofs to make payments verifiable without revealing anything. Whether you're paying a friend from a flip phone in Lagos, settling an x402 invoice on Solana mainnet, or running an autonomous agent that pays for API calls, the same private rails carry the message.

We sign payments locally on a phone, wrap them in a zero-knowledge proof, and carry them over plain SMS. A relayer broadcasts the transaction to Solana. The chain verifies the proof and settles in under two seconds. Amounts, balances, and identities remain confidential.

A small team of cryptographers, telecom engineers, and Solana developers. We have shipped privacy infrastructure for mobile money in three emerging markets, built carrier-grade SMS gateways, and contributed to the x402 specification. We're funded for the long haul.

Press, partnerships, integrations: hi@hvisk.app.