Public endpoints

Service	URL	Protocol
EVM JSON-RPC	https://rpc.bkc.network	HTTP POST, JSON-RPC 2.0
EVM WebSocket	wss://ws.bkc.network	JSON-RPC over WebSocket (eth_subscribe)
CometBFT RPC	https://comet-rpc.bkc.network	HTTP GET/POST (JSON-RPC and URI)
Cosmos REST (LCD)	https://api.bkc.network	HTTP, grpc-gateway
Cosmos gRPC	grpc.bkc.network:443	gRPC over TLS
Explorer API	https://explorer.bkc.network/api	Blockscout REST (/api/v2/…) and Etherscan-compatible
Faucet API	https://faucet.bkc.network/api	see Get test BKC

All HTTP endpoints return Access-Control-Allow-Origin: *.

Which one to use

You want to…	Use
read contract state, balances, logs, receipts	EVM JSON-RPC
subscribe to new blocks	EVM WebSocket (newHeads)
send any transaction (including EVM writes)	CometBFT RPC — via the SDK or Hardhat plugin
query accounts, sequences, staking, governance	REST or gRPC
look up a Cosmos tx by hash, or search txs by event	CometBFT RPC /tx, /tx_search or REST /cosmos/tx/v1beta1/…
verify contracts, list token holders	Explorer API

Smoke test

curl -s -X POST https://rpc.bkc.network -H 'content-type: application/json' \
  --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'            # {"result":"0x40000"}
curl -s https://comet-rpc.bkc.network/status | jq -r .result.sync_info.latest_block_height
curl -s https://api.bkc.network/cosmos/base/tendermint/v1beta1/blocks/latest | jq -r .block.header.height
grpcurl grpc.bkc.network:443 cosmos.base.tendermint.v1beta1.Service/GetLatestBlock | jq -r .block.header.height

Fair use

The public endpoints are shared testnet infrastructure with no API keys. For load tests, indexers or production-like traffic, run your own full node.