Application: PayQR — a non-custodial merchant payment terminal Version: 1.0.0 Last updated: 9 July 2026 Network status: Testnet build (Base Sepolia). No real money moves.
0. The most important thing on this page
PayQR is not a company, not a bank, not a payment processor, and not a legal entity of any kind. It is a decentralized application — open-source software that runs in your browser and talks directly to a public blockchain. There is no business operating it, no office, no support obligation, and no one who can take custody of your money, freeze a transaction for you, refund you, or step in when something goes wrong on-chain. These Terms exist to make that unmistakably clear before you use the software.
If you were hoping there is a company standing behind this that guarantees your funds or fixes your mistakes: there is not. Everything below follows from that single fact. Use the app only if you accept it.
1. What you are agreeing to
By opening, connecting a wallet to, or otherwise using PayQR, you agree to these Terms. If you do not agree, do not use it. There is no account to close and no contract to sign — using the software is the agreement, and stopping using it is how you leave.
Because PayQR is code, "these Terms" means the version published alongside the code you are running. The version and date at the top identify which one applies to you, and the full history is visible in the repository.
2. What PayQR does, in plain terms
PayQR is a front-end for a peer-to-peer settlement protocol. It lets a merchant:
- Log in with a wallet (via a third-party wallet/gas-sponsorship provider) and register a shop, on-chain, with a shop name and a payout identifier (such as a UPI ID, PIX key, or CBU/alias) and a settlement currency.
- Generate a payment QR code so a customer can pay.
- Have the fiat side of that payment settled peer-to-peer by independent liquidity providers through the underlying protocol — not by PayQR.
- View balances, order history, and settlements read live from the public chain and a public indexer.
- Withdraw settled value, either as USDC to their own wallet or as fiat via the protocol's cash-out widget.
PayQR itself is only the interface. It never holds your money, never touches a bank or card rail, and never sits in the middle of a settlement. It builds transactions and shows you information; you approve the transactions and the protocol and its liquidity providers do the settling.
3. Non-custodial: we never hold your funds
This deserves its own section because it is the crux of everything. PayQR is non-custodial. At no point does PayQR, or anyone who publishes it, hold, control, or have access to your funds, your wallet keys, or your customers' money. Your balance lives on-chain in a smart contract that you interact with directly. When you withdraw, the transaction is sent from your own wallet.
The practical consequences are absolute and non-negotiable:
- We cannot reverse, cancel, refund, or "chargeback" a transaction. On-chain transactions are final.
- We cannot recover funds sent to the wrong place, lost to a mistake, or stolen from a compromised wallet or device.
- We cannot unfreeze, unstick, or manually settle an order for you.
- We cannot access your account "from our side" to help, because there is no side and no account we hold.
If a normal payment company could do it for you, assume PayQR cannot.
4. Your responsibilities
Because there is no operator to lean on, the responsibility that a payment company would normally carry falls on you:
- Your wallet and device. You are solely responsible for the security of your login method, your wallet, and the device you use. Anyone with access to your logged-in session can act as you.
- The details you enter. Your payout identifier, shop name, and settlement currency are submitted on-chain and are public and permanent. If you type the wrong payout ID, settlements may go somewhere you cannot recover them. Check everything before you confirm.
- What you accept payment for. You are responsible for the legality of your business and your transactions where you operate. See Section 6.
- Your taxes, licenses, and compliance. PayQR does no tax reporting, withholding, KYC, or regulatory filing for you. Whatever the law requires of you as a merchant is entirely your responsibility.
- Understanding what you are doing. This is blockchain software. If you do not understand wallets, on-chain finality, stablecoins, or peer-to-peer settlement, learn before you rely on it for real value.
5. Testnet status — this is not real money yet
The current build runs on Base Sepolia, a test network. No real money moves. The settlement lock is a short test value, the fiat leg is simulated by a liquidity provider, and prices on the test network may be economically wrong (for example, some non-INR currencies carry placeholder on-chain prices that do not reflect real exchange rates). Do not treat testnet activity as real payments, and do not rely on testnet balances as if they were money. If and when a production network is used, that will be a different context with its own real-world risk — and none of the "it's only a test" comfort will apply.
6. Acceptable use
You agree not to use PayQR to facilitate anything illegal where you operate, including money laundering, terrorism financing, fraud, sanctions evasion, or the sale of prohibited goods or services. You also agree not to attack, exploit, or abuse the app, the protocol, its contracts, or the infrastructure it relies on. Because the app is decentralized, no one can technically stop you from misusing it — which means the responsibility and the legal exposure for misuse are entirely yours.
Note that the underlying protocol/integrator may include an administrative "freeze" capability exercised on-chain by a protocol or integrator administrator. This is a property of the smart contracts, not a service PayQR operates on your behalf, and it is not a promise of protection, moderation, or recourse to you.
7. Third-party infrastructure
PayQR depends on independent third parties it does not control: a blockchain and its RPC providers, a wallet/authentication/gas-sponsorship provider, a public indexer/subgraph, liquidity providers who perform the fiat settlement, and a hosting/CDN provider that serves the static files. Your use of PayQR is also subject to those parties' terms. If any of them changes, degrades, goes down, or disappears, PayQR may stop working in whole or in part, and no one owes you a fix, a refund, or continuity. We make no promises about their availability, correctness, or conduct.
8. Availability and changes
PayQR may change, break, be taken offline, be forked, or stop being maintained at any time, without notice. Because it is a static, open-source dapp, it may also continue to exist and run even if no one is maintaining it — with all the risk that implies. There is no guaranteed uptime, no maintenance commitment, and no roadmap you can hold anyone to.
9. No warranty
THE APPLICATION IS PROVIDED "AS IS" AND "AS AVAILABLE," WITH ALL FAULTS AND WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, ACCURACY, OR NON-INFRINGEMENT. No one warrants that the app is secure, error-free, uninterrupted, correctly priced, or that settlements will occur, succeed, or reach you. You use it entirely at your own risk.
10. Limitation of liability
To the maximum extent permitted by law, no person who authored, published, contributed to, or hosted this open-source software is liable to you for any loss or damage of any kind — including lost funds, lost profit, lost data, failed or delayed settlements, mispricing, downtime, or any direct, indirect, incidental, special, consequential, or punitive damage — arising from or related to your use of, or inability to use, PayQR. This is not a limitation a company is offering you; it is a statement of reality. There is no entity holding your funds and no entity that can make you whole. Your only practical remedy is to stop using the software.
11. Indemnity
To the extent the law allows, you agree to hold harmless the authors, contributors, and hosts of PayQR from any claim, loss, or expense arising out of your use of the app, your merchant activity, your violation of these Terms, or your violation of any law or the rights of others.
12. No legal, financial, or tax advice
Nothing in the app or its documentation is legal, financial, accounting, or tax advice. Decisions about accepting crypto-settled payments, handling stablecoins, and meeting your obligations as a merchant are yours to make, ideally with your own qualified advisers.
13. Entire understanding
These Terms, together with the Privacy Policy and the Merchant Terms and Conditions published alongside them, are the entire understanding between you and the software regarding its use. Because there is no legal entity on the other side, these are best understood as the rules of the road for interacting with a piece of public software — not a negotiated contract with a counterparty who can be sued into performing.
14. Final acknowledgement
By using PayQR you acknowledge that you have read this document, that you understand PayQR is a non-custodial dapp with no company behind it, that no one can recover your funds or reverse your transactions, and that everything you do with it is at your own risk and on your own responsibility. If you are not comfortable with that, do not use the app.