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OP Sepolia Testnet

eip155:11155420Ethereum / EVMExtended
Get API key

Pull a block stream in one command

Set $SF_API_TOKEN to a key from your dashboard, then run this against OP Sepolia Testnet.

grpcurl -H "authorization: Bearer $SF_API_TOKEN" \
  -d '{"start_block_num": -100, "final_blocks_only": true}' \
  opsepolia.firehose.pinax.network:443 \
  sf.firehose.v2.Stream/Blocks

Streams the 100 most recent blocks from OP Sepolia Testnet. Firehose reads a negative start_block_num as an offset back from chain head, so no head lookup is needed.

Providers & endpoints

Pinax

pinax.network
  • Substreamsopsepolia.substreams.pinax.network:443
  • Firehoseopsepolia.firehose.pinax.network:443
First block0Lowest streamable height
Block modelExtendedsf.ethereum.type.v2.Block
ServicesSubstreams · FirehoseNative token: ETH

Resources

optimism-sepolia.blockscout.comChain documentationBlock protobuf schema