https://docs.chainstack.com/reference/cronos-newblockfilter
eth_newBlockFilter | Cronos - Chainstack
ethcronoschainstack
https://docs.blockpi.io/build/api-reference/kaia/klay_newblockfilter
kaia_newBlockFilter | BlockPI Docs
Creates a filter in the node, to notify when a new block arrives.
kaiablockpidocs