This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
NullPay is the first invoicing and payments platform where transaction details are cryptographically hidden on-chain. Every existing crypto payment tool broadcasts your invoices, amounts, and counterparties on a public ledger. NullPay encrypts that data using zero-knowledge proofs — the payment is verifiable, the data is invisible. We also shipped an MCP server so AI agents can natively create and settle private invoices. Nine tools, one command. Commerce without surveillance.
Hey PH — Ashish here, co-founder of NullPay.
The idea started with a block explorer. I sent a test transaction to show a friend how fast crypto payments were. Pulled up the explorer to prove it landed. There it was — my wallet balance, every previous transfer, who I paid and when. I felt exposed. Not because I was hiding anything. Because I had never thought of my financial life as public property.
That night I called Dhruv. We realized every business running payments on-chain is operating naked. Merchant balances, supplier payments, payroll — all visible to anyone with a block explorer. That is not a theoretical concern. It's the reason most companies refuse to touch blockchain payments for anything beyond speculation.
We built NullPay on Aleo using zero-knowledge proofs. When you create an invoice, the smart contract hashes your address, the amount, and a cryptographic salt. Only the hash touches the chain. When someone pays, the contract verifies the hash without ever revealing who paid whom or how much. The payment is verifiable. The data is invisible.
We also shipped an MCP server so AI agents can natively create and settle private invoices — from Claude, Cursor, Codex, or your group chat via OpenClaw.
We are two final-year students at IIT Roorkee. Built this in two and a half months across five consecutive Aleo Buildathon waves. Won first place in four of them. Judges called it "on par with institutional partnerships."
Happy to answer anything. Roast us, ask technical questions, tell us why this will or will not work. We are here for all of it.
One thing we've been thinking about a lot while building NullPay:
Private payments are only half the problem.
Even if transactions become private, spending those assets in the real world remains an open challenge.
We've been exploring what a privacy-first card experience could look like — one that preserves the principles of zero-knowledge payments while making everyday spending practical.
Still early, but we're excited about what's coming next. 💳🔥
Would love to hear what features you'd expect from a truly private crypto card.
About NullPay on Product Hunt
“Pay Privately. Nullify the trace.”
NullPay was submitted on Product Hunt and earned 8 upvotes and 3 comments, placing #37 on the daily leaderboard. NullPay is the first invoicing and payments platform where transaction details are cryptographically hidden on-chain. Every existing crypto payment tool broadcasts your invoices, amounts, and counterparties on a public ledger. NullPay encrypts that data using zero-knowledge proofs — the payment is verifiable, the data is invisible. We also shipped an MCP server so AI agents can natively create and settle private invoices. Nine tools, one command. Commerce without surveillance.
NullPay was featured in Fintech (47.1k followers) and Blockchain (6.6k followers) on Product Hunt. Together, these topics include over 19.1k products, making this a competitive space to launch in.
Who hunted NullPay?
NullPay was hunted by Ashish. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Ashish