Nnodevera
Ethereum RPC API

Managed Ethereum JSON-RPC API for USDT-ERC20 merchants

Use nodevera to call Ethereum JSON-RPC methods through a protected commercial gateway. It is designed for merchant payment systems that need receipt checks, block queries, balance reads and signed transaction broadcasting without managing provider keys in application code.

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Core methods eth_blockNumber, eth_getTransactionReceipt, eth_getTransactionByHash, eth_call and eth_sendRawTransaction through one authenticated gateway endpoint.

Merchant use cases

  • USDT-ERC20 transaction receipt verification
  • Confirmation-depth checks before crediting orders
  • Block height and gas context queries
  • Signed raw transaction broadcasting for withdrawals

Gateway benefits

  • API Key and IP allowlist enforcement
  • Monthly quota tracking per customer
  • Private API domain for paid customers
  • Support for payment and broadcast troubleshooting

Ethereum JSON-RPC examples

Send Ethereum JSON-RPC payloads to the nodevera /eth route.

Latest Ethereum block number 
curl -X POST <api_base_url>/eth \
  -H 'content-type: application/json' \
  -H 'X-API-Key: <your_api_key>' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'
USDT payment receipt by transaction hash 
curl -X POST <api_base_url>/eth \
  -H 'content-type: application/json' \
  -H 'X-API-Key: <your_api_key>' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getTransactionReceipt","params":["0x<tx_hash>"]}'
Broadcast signed Ethereum transaction 
curl -X POST <api_base_url>/eth \
  -H 'content-type: application/json' \
  -H 'X-API-Key: <your_api_key>' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_sendRawTransaction","params":["0x<signed_raw_tx>"]}'
ERC20 Verification

What a payment system should verify

Receipt statusRequire status 0x1 before considering the transfer successful.
USDT contractMatch logs against the official USDT ERC20 contract address.
Recipient and amountMatch Transfer event recipient and value to the customer order.
ConfirmationsWait for your required confirmation depth before activation.

FAQ

Can I use Infura directly?You can, but nodevera adds customer API keys, IP allowlists, usage accounting and merchant payment workflow support.
Are private keys required?No. nodevera broadcasts signed transactions only. Signing remains in your own backend.