01
Self-custodied wallets
Users remain in control of their wallets. NexaChain does not hold customer balances or operate custodial accounts.
NexaChain Security
Built arounduser control.
NexaChain is designed as a non-custodial payment interface. Users control their wallets, review each payment, and authorize blockchain transactions directly from their own devices.
Self-custodiedLocal signingDirect settlementTransparent fees
Security model
Non-custodial by design
N
Wallet ownershipUser
Private-key storageLocal device
Payment authorizationBuyer
Settlement networkBNB Smart Chain
Custody by NexaChainNone
NexaChain provides the interface and payment-request layer while wallet control remains with the user.
Core security principles
Security begins with ownership and authorization.
NexaChain reduces custodial risk by keeping control of funds and transaction signing with the user.
02
Private keys stay local
Private keys are generated and stored on the user’s device rather than on NexaChain servers.
03
User authorization is required
Every payment must be reviewed and approved by the buyer before the wallet signs and sends the transactions.
04
Direct blockchain settlement
Payments are sent directly from the buyer wallet to the merchant wallet and NexaChain treasury on BNB Smart Chain.
1
User device
The wallet and private-key material remain under the user’s control.
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2
Payment review
The buyer verifies the complete payment before proceeding.
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3
Local signing
Transaction signatures are generated on the user’s device.
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4
Blockchain broadcast
Signed transactions are sent to BNB Smart Chain for confirmation.
Private-key protection
Private keys are not transmitted to NexaChain.
The private key is used locally to create a transaction signature. NexaChain does not need access to that key to prepare a payment request or display a transaction confirmation.
This also means NexaChain cannot recover a private key, restore an inaccessible wallet, or authorize payments for the user.
Important user responsibility
Losing access to the device or private key may permanently prevent access to the wallet. Users should protect their wallet credentials and device carefully.
Payment authorization
Nothing is signed before the buyer confirms.
Before authorization, the buyer can review the merchant, item price, separate NexaChain fee, final total, token, and blockchain network.
✓Merchant and item details
✓Full item price payable to the merchant
✓Separate 2% NexaChain software fee
✓Final total payable by the buyer
✓Supported token and BNB Smart Chain network
Authorization preview
Review before signing
Item
Scented candle
5.00 USDT
Item price5.00 USDT
NexaChain fee · 2%0.10 USDT
Total to pay5.10 USDT
Merchant receives5.00 USDT
Treasury receives0.10 USDT
Sign & send transactions
The user can cancel before the wallet signs and sends the blockchain transactions.
Defined boundaries
What NexaChain does not control.
Clear boundaries are an important part of the NexaChain security model.
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No custody of funds
NexaChain does not receive, pool, or temporarily hold buyer or merchant assets.
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No private-key access
NexaChain does not receive or store the private keys used to authorize payments.
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No hidden fee deduction
The software usage fee is shown separately before the buyer authorizes the payment.
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No platform-controlled transfers
Transactions are signed and sent by the buyer wallet, not by NexaChain on the user’s behalf.
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No custodial recovery process
Because wallet control remains with the user, NexaChain cannot restore lost private keys or recover inaccessible wallets.
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No transaction reversal
Confirmed blockchain transactions cannot be reversed, cancelled, or frozen by NexaChain.
Blockchain verification
Confirmed payments can be verified on-chain.
Transactions submitted through NexaChain are processed on BNB Smart Chain. Once confirmed, the associated transaction records can be checked using a compatible blockchain explorer.
Transaction hash
Public on-chain identifier
Destination wallet
Merchant or treasury address
Confirmation status
Verified by the network
Blockchain confirmation does not replace the need to verify the merchant, item, payment amount, token, and wallet address before authorizing a transaction.
Shared responsibility
Secure use depends on every participant.
NexaChain provides a non-custodial payment interface, while users remain responsible for protecting their devices, wallets, and transaction decisions.
Buyer responsibilities
Review and protect before paying.
✓Keep the device, wallet, and private key secure.
✓Verify the merchant, item, amount, fee, token, and network before confirming.
✓Maintain sufficient BNB to cover blockchain network fees.
✓Never share a private key, recovery phrase, password, or device access code.
✓Use only official NexaChain app listings and trusted payment links.
Merchant responsibilities
Create accurate and lawful requests.
✓Verify item details and pricing before creating a payment request.
✓Protect access to the merchant device and self-custodied wallet.
✓Confirm on-chain settlement before treating a payment as final.
✓Keep wallet addresses and business information accurate.
✓Use NexaChain only for lawful goods, services, and payment activity.
Important security notice
Blockchain payments can be irreversible.
Users should verify all payment information before authorization. NexaChain cannot reverse confirmed blockchain transactions, recover funds sent to an incorrect address, restore lost private keys, or guarantee recovery of an inaccessible self-custodied wallet.
Explore NexaChain
Understand the model before you transact.
Review the payment flow, download the applications, and use NexaChain with full awareness of self-custody and blockchain transaction responsibilities.
Continue to the NexaChain Whitepaper →