Question 1

What is ZKJ?

Accepted Answer

ZKJ is the token of Polyhedra Network and the native utility token of EXPchain. On EXPchain, it is used to pay transaction fees; therefore, its direct function on that chain is to provide the gas payment asset for transaction processing. “Native token” describes ZKJ's fee-settlement role on EXPchain. It does not mean that tokens with the same name on all other networks can directly pay EXPchain fees. If the asset remains on another network, it generally needs to enter EXPchain through a supported route first.

Question 2

What practical use does ZKJ have on EXPchain?

Accepted Answer

When submitting transfers, contract calls, and other transactions on EXPchain, ZKJ is used to pay transaction fees (gas). Network processing consumes computational and network resources, and fees are settled in the chain's native asset; without ZKJ available to pay gas, a transaction cannot complete that fee payment even if it carries other tokens. The actual payment cost is not determined solely by “how much ZKJ is held,” but by the gas consumed by the transaction and that transaction's fee parameters. Official documentation confirms ZKJ's payment use, but does not provide a uniform fixed charge per transaction on that page, so it should not be described as a fixed rate.

Question 3

Why do I need to bridge ZKJ to EXPchain?

Accepted Answer

Bridging ZKJ from another network to EXPchain enables the asset to arrive on the target chain in a form usable on EXPchain, so it can pay that chain's transaction fees or participate in applications on that chain. Bridging addresses the issue of the asset being on a different network; it does not automatically give a token gas functionality on the target chain simply because the token name is the same. In the process, users need to select the correct source network and EXPchain destination network, submit a bridge transaction, and wait for the source chain and bridging process to complete before confirming that the asset has reached the destination address; before it arrives, the asset still cannot be used as gas on EXPchain. Official guidance states that ZKJ on Ethereum and BNB Chain can be bridged to EXPchain; actual operations also require checking the networks and addresses supported by the bridge interface being used.

Question 4

How is ZKJ related to Polyhedra Network?

Accepted Answer

ZKJ's relationship with Polyhedra Network is that the project positions it as a token serving gas, liquidity, community, and governance, while EXPchain is Polyhedra's application-oriented blockchain network. The current use explicitly established by EXPchain documentation is payment of transaction fees. “Liquidity, community, and governance” on the website describe the project's positioning of the token's scope of roles. They do not, by themselves, establish that specific governance voting rights, staking returns, or liquidity incentives have already launched under any particular rules. When interpreting these descriptions, the gas use stated in chain documentation should be kept separate from the specific implementation status of other functions.

Question 5

What is ZKJ's issuance arrangement?

Accepted Answer

In tokenomics information published in 2024, Polyhedra proposed that ZKJ would be released on a six-year timeline. This statement indicates that the project designed the release schedule to occur over multiple years, rather than releasing all tokens at a single point in time. This source uses planning-oriented language for the relevant functions and release arrangements. Therefore, the six-year timeline should be understood as the issuance design in that proposal; it cannot be used to independently infer real-time circulating supply on a given date, exact unlock amounts for each category, or treat unverified governance and staking mechanisms as rights already implemented.

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