JSON-RPC

https://rpc.testnet.16ane.net is an archive node: state and traces are available for every block since genesis. It accepts JSON-RPC over HTTPS POST (single calls or batches), and CORS allows any origin.

Namespace	Notes
eth, net, web3	Standard Ethereum JSON-RPC
debug	debug_traceTransaction, debug_traceBlockByNumber, debug_traceCall (with tracers such as callTracer)
trace	trace_block, trace_transaction, trace_filter (up to 100 blocks), trace_call
ots	Otterscan API level 8: ots_getBlockDetails, ots_traceTransaction, ots_getInternalOperations, …
txpool	txpool_status, txpool_content

Not available: ots_searchTransactionsBefore and ots_searchTransactionsAfter (Reth doesn’t implement them). For an address’s history use the Indexer API. There is no admin namespace and no WebSocket endpoint yet.

Limits

Limit	Value
Concurrent traces	4
Gas cap for eth_call, eth_estimateGas and call traces	30,000,000
Logs per response	10,000
Blocks per filter (eth_getLogs)	10,000
trace_filter range	100 blocks
Response size	50 MB

Examples

# What a transaction did, as a call tree
curl -sS https://rpc.testnet.16ane.net -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","method":"debug_traceTransaction","params":["0x6254ab1625295aadc2120ad78576d7bd80f16d08a9b773e77c30d709bc344c14",{"tracer":"callTracer"}],"id":1}'

# Several calls in one request
curl -sS https://rpc.testnet.16ane.net -H 'content-type: application/json' \
  -d '[{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]},
       {"jsonrpc":"2.0","id":2,"method":"eth_getBlockByNumber","params":["finalized",false]}]'