Question 1

What is NERO?

Accepted Answer

NERO is the native currency of the NERO Chain mainnet, primarily used for network transaction fees; the mainnet's chain ID is 1689. NERO Chain is described in its official materials as a modular Layer 1 and is EVM-compatible. The role of a native currency is to provide the base unit for settling fees for on-chain execution; this is a separate arrangement from application-selected sponsorship or other payment interfaces.

Question 2

What is NERO mainly used for?

Accepted Answer

NERO's fundamental use is to pay network fees consumed by executing transactions on NERO Chain. When users initiate transfers, call contracts, or perform other on-chain operations, the network must process, execute, and propagate the operation, and fees correspond to those resource costs. Actual cost is not determined solely by “whether one has NERO”; it also varies with the operation type and the payment configuration adopted by the application. The existence of native fee settlement does not mean every application interface requires users to hold and pay NERO directly themselves.

Question 3

Must users hold NERO to use NERO Chain?

Accepted Answer

Not necessarily. NERO Chain's Paymaster allows applications, based on their own configuration, to sponsor fees or allow users to pay fees with ERC-20 tokens supported by that application; in these cases, users may not need to hold NERO directly. The key conditions are whether the application enables Paymaster, which ERC-20 asset it supports, and whether the payment policy covers the operation. Paymaster is an application-side fee-payment arrangement; it does not automatically make all transactions fee-free, nor does it guarantee that all tokens can be used for payment.

Question 4

How does NERO Chain confirm transactions?

Accepted Answer

NERO Chain uses hybrid randomized DPoSA consensus. A validator set is responsible for proposing and validating blocks during an epoch consisting of a fixed number of blocks, while the BFT mechanism enables consensus nodes to agree on transaction confirmations. “Randomized” should not be regarded as a currently fully enabled operating state: official documentation explicitly states that randomized validator selection is still planned for future implementation, while current validator selection is deterministic. A design description of the transaction-confirmation mechanism is different from actual deployment of a future selection mechanism.

Question 5

How do native account abstraction and Paymaster affect users?

Accepted Answer

Account abstraction is a native capability of NERO Chain, and official materials state that it has built-in support for ERC-4337; Paymaster is a supporting service around fee payments. Together, they allow applications to organize user operations into more flexible account and fee flows. For users, this may appear as smart-contract wallets, social login, batch operations, or application-sponsored fees; however, whether these experiences are available depends on whether a particular application integrates the relevant capabilities, rather than arising automatically from holding NERO itself.

Question 6

Has NERO Chain's application fee sharing been enabled?

Accepted Answer

Automatic application fee sharing is not currently enabled on NERO Chain's current mainnet or testnet. Official materials describe it as a future feature; what currently exists is an off-chain fee-sharing arrangement with the NERO Foundation. Therefore, the automatic-allocation concept in the documentation cannot be treated as an application-revenue rule currently executing on-chain, nor can it be used to infer that an application has already received on-chain automatic revenue sharing. Future features, off-chain arrangements, and automatic mechanisms on mainnet differ in status and verifiability.

Question 7

What is the relationship between EVM compatibility and the NERO user experience?

Accepted Answer

NERO Chain is EVM-compatible, and developers can use familiar tools such as Solidity, Hardhat, and Remix to develop and deploy contracts. EVM compatibility describes compatibility of the execution environment and development tools; it does not mean every application, asset, or account state on other EVM chains automatically migrates over. If an application also integrates account abstraction or Paymaster, the user fee experience can differ from the traditional approach in which an externally owned account pays native Gas directly; this results from application integration and configuration.

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