Indexed OptimismBlockchain Data

Optimism, branded OP Mainnet, is an optimistic rollup that has been producing blocks on top of Ethereum since 2021. It runs no consensus of its own. A sequencer orders transactions and posts them to Ethereum in batches, Ethereum holds the canonical record, and fault proofs with a challenge window stand behind withdrawals. Execution is EVM-equivalent, so the same twenty-byte accounts, the same opcodes and the same contract bytecode work unchanged. Gas is paid in ETH; OP is a separate governance token, distributed from 2022 and used to vote in the Optimism Collective rather than to pay fees. The Bedrock upgrade of June 2023 replaced the chain’s client software, fixed block time at two seconds and turned deposits from Ethereum into a typed transaction that appears inside L2 blocks. Bedrock’s other legacy is the OP Stack, the codebase Base, Mode, Zora, Ink and Unichain all run.

SonarX indexes Optimism as the EVM chain it is: blocks and headers, transactions and receipts, event logs decoded against contract ABIs, execution traces including internal value transfers, and token transfers and balances. The same normalized model is used on every chain SonarX covers, so an Optimism query and an Ethereum query take the same shape and join without a translation layer.

Full historical coverage is available today as a data-share or a file delivery. Real-time delivery is enabled on request. Point-in-time balance tables, the real-time balances API and the batch wallets, tokens and balances API are all available for Optimism. Kafka streaming can be enabled for Optimism on request.

Two properties separate a rollup from the L1 it settles to. Cost is not gas used multiplied by gas price: each transaction also pays a share of what the sequencer spends posting its batch, so analysis that reads only the L2 side understates what an application spent. And the chain has two heads. Blocks the sequencer publishes are provisional until the batch containing them is derived from Ethereum, so an indexer has to be able to withdraw an unsafe block. Bedrock divides the history as well: before it, every block held exactly one transaction and consecutive blocks could carry the same timestamp, so elapsed time cannot be read from early block numbers.

Optimism requests split between funds and the protocol teams building on it. Position-level DeFi analytics is the largest share, because a lending or perpetuals position here is a sequence of decoded events and the true cost of a swap only appears once internal transfers are attached to it. Cost attribution is the one specific to this chain: a team paying to operate an application has to separate L2 execution cost from the L1 data cost of the batch its transactions rode in, and the same question comes up again on Base. Grant and governance accounting is the third, following OP distributed through Collective programs and what recipients did with it afterwards. Treasury reporting and transaction monitoring run on the same indexed tables.

Tell us the delivery target, how far back you need and how fresh it has to be, and the share is scoped against that. Optimism history and the balance APIs are available now, and the pre-Bedrock and post-Bedrock eras arrive as one dataset rather than two. The published coverage matrix for every network SonarX indexes lives in the data documentation, and the rest of the catalogue is at all indexed chains.