Funding your balance
Add balance by sending USDG on Robinhood Chain. That is the only way to fund a balance.
heura targets Robinhood Chain mainnet (chain id 4663) and takes payment in USDG. It is not launched and nothing has been audited. The API address is https://api.useheura.com/v1 and answers today, but only one seller (run by heura) is behind it so far, so do not send real funds until launch is announced.
Add balance with USDG
Send USDG on Robinhood Chain (chain id 4663) and get the same number of dollars of API balance. One USDG is $1.00. USDG has 6 decimals. You also need a small amount of ETH on the same chain for the network fee.
- 1Ask for a quote
In the app, choose an amount from $1 to $500. You get the payee address, the USDG token address, the exact amount and a short reference (
calldata_suffix). - 2Send the payment
Your wallet sends one plain USDG
transfer(payTo, amount)with the reference appended to the transaction data. heura never holds your keys and never broadcasts for you. Pay from a regular wallet (EOA) such as Phantom, MetaMask or Rabby: smart-contract wallets are refused withunsupported_wallet_type. - 3Claim it
The app waits for the receipt, then submits the transaction hash. The server reads the receipt on-chain, waits for confirmations, and credits your balance once.
- Only your wallet can claim its own payment. A payment made by another wallet cannot be redeemed into your account.
- A payment buys one credit only. Claiming it twice, even at the same moment, credits once. The same transaction can never be spent in two places (top-up and x402 share one replay table).
- If you send more than the quote, you are credited what actually arrived.
Numbers
| Item | Value |
|---|---|
| Network | Robinhood Chain mainnet, chain id 4663 (eip155:4663) |
| Token | USDG, 0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168, 6 decimals |
| Explorer | robinhoodchain.blockscout.com |
| Limits | $1 to $500 per top-up |
Staking was removed
The earlier staking program (NEX and CREDIT) was built for another chain and has been removed from heura together with every component of the old stack. Staking will not come back until a Solidity version has been written and audited. There is nothing to stake or claim today.
What to know before you rely on it
- heura is not launched and has not been audited.
- The balance is an account balance on heura. It cannot be sent or cashed out.