StealthBooks
Powered by Umbra Privacy

Private B2B Billing
on Solana

Issue invoices, receive USDC through Umbra's zero-knowledge mixer, and share only what your auditor needs. No counterparty exposure. No treasury surveillance.

Payer outflows from public ATAs remain visible on-chain. Privacy applies to the receiving address, UTXO routing, and treasury aggregation.

Built for privacy-native teams

Privacy where it counts

Every feature is designed around Umbra's encrypted account model. Settlement is private by default, not by configuration.

Private Settlement

Payments flow through Umbra's ZK mixer. Your treasury balance is never exposed on-chain.

Encrypted Balances

Claimed receivables land in your Encrypted Token Account — invisible to anyone without your key.

Selective Disclosure

Share scoped, time-limited reports with auditors. Revoke access instantly. Zero overexposure.

Invoice Lifecycle

From DRAFT to CLAIMED_PRIVATE — a full state machine built for serious B2B payment flows.

Workflow

Invoice to private settlement

01

Issue Invoice

Create a USDC invoice with line items, due date, and a private checkout link.

02

Payer Completes

Payer uses Umbra's mixer to send USDC — destination stays private.

03

Scan & Claim

Scan your publicReceived bucket. Claim UTXOs into your encrypted account.

04

Disclose Selectively

Generate scoped audit packages — only the records your accountant needs.

Ready to go private?

Connect your Solana wallet, register with Umbra, and start issuing private invoices in minutes.