The nodes currently running in the PoA mainnet can be seen at the Dock Network telemetry.
Our fork of Polkadot-js apps showing block explorer and other tools is here. The validators producing blocks in a round-robin fashion in the explorer.
To query the balance of an account, use the system
module and not the balances
module.
The decimal places and token symbol are not part of the testnet chain spec and that makes the transaction fees event (TxnFeesGiven
) show a fees of 0. This will be fixed in the mainnet but for the time being SDK can be used to query the events with correct values.