Blocks indexed52.2MFull archive
Archive size112.9 TiBUncompressed block data
Block time2.0 sAverage over September 2026
New blocks / day43.2KAverage over September 2026
Blocks added1.3MDuring September 2026
Archive growth3.6 TiBAdded during September 2026
Pull a block stream in one command
substreams authsubstreams run common@latest map_clocks -e base -s -100 -o jsonl
Streams the 100 most recent blocks from Base Chain. -s -100 is read as an offset back from chain head, so no head lookup is needed.
Stream Flashblocks for 200ms preconfirmations
The Base sequencer emits a partial block every 200ms — up to ten per block height — carrying transactions as soon as they are sequenced rather than at full block confirmation. Substreams surfaces these as partial blocks on the StreamingFast Base Mainnet endpoint and only reprocesses transactions it has not already seen. Modules must avoid block-level aggregation and work off transactionTraces to stay deterministic, and it needs Substreams CLI v1.17.9 or newer. Beta.
Providers & endpoints
StreamingFast
streamingfast.io- Substreams
base-mainnet.streamingfast.io:443 - Firehose
base-mainnet.streamingfast.io:443
Pinax
pinax.network- Substreams
base.substreams.pinax.network:443 - Firehose
base.firehose.pinax.network:443
First blockFull ArchiveLowest streamable height
ServicesSubstreams · Firehose · Token APINative token: ETH