To use the eth_getTransactionCount method on the Avalanche C-Chain, ensure that the end of your URL includes ext/bc/C/rpc.
Parameters
The address from which the transaction count to be checked
The block number as a string in hexadecimal format or tags. The supported tag values include earliest for the earliest/genesis block, latest for the latest mined block, pending for the pending state/transactions, safe for the most recent secure block, and finalized for the most recent secure block accepted by more than 2/3 of validators. safe and finalized are only supported on Ethereum, Gnosis, Arbitrum, Arbitrum Nova, and Avalanche C-chain
Returns
The integer of the number of transactions sent from an address encoded as hexadecimal