#zk-rollup

Real-time on-chain data for B² Network (B-Squared, chain-id 223) — the Bitcoin Layer-2 ZK-rollup that commits its proofs back to Bitcoin, EVM-compatible and using BTC as its native gas token. Query live network status (latest block height, network id, client version), fetch any block by height or the latest one (timestamp, transaction count, gas used / limit, base fee, miner), read the current gas price in wei and gwei, and look up the native BTC balance and transaction count of any address. A keyless, no-account JSON wrapper over the canonical B² Network JSON-RPC node — decoded from hex into plain decimals and human-readable BTC so you do not have to. Ideal for explorers, wallets, dashboards, gas estimators and analytics on the B² Network Bitcoin L2.

api.oanor.com/bsquared-api

Real-time on-chain data for Merlin Chain (chain-id 4200) — the Bitcoin Layer-2 ZK-rollup built on the Polygon CDK stack, EVM-compatible and using BTC as its native gas token. Query live network status (latest block height, network id, client version), fetch any block by height or the latest one (timestamp, transaction count, gas used / limit, base fee, miner), read the current gas price in wei and gwei, and look up the native BTC balance and transaction count of any address. A keyless, no-account JSON wrapper over the canonical Merlin Chain JSON-RPC node — decoded from hex into plain decimals and human-readable BTC so you do not have to. Ideal for explorers, wallets, dashboards, gas estimators and analytics on the Merlin Chain Bitcoin L2.

api.oanor.com/merlin-api

Real-time on-chain data for Zircuit (chain-id 48900) — the zero-knowledge rollup layer-2 on Ethereum with AI-driven Sequencer Level Security. Query live network status (latest block height, network id, client version), fetch any block by height or the latest one (timestamp, transaction count, gas used / limit, base fee, miner), read the current gas price in wei and gwei, and look up the native ETH balance and transaction count of any address. A keyless, no-account JSON wrapper over the canonical Zircuit JSON-RPC node — decoded from hex into plain decimals and human-readable ETH so you do not have to. Ideal for explorers, wallets, dashboards, gas estimators and analytics on the Zircuit ZK rollup.

api.oanor.com/zircuit-api

Real-time on-chain data for Scroll (chain-id 534352) — the native zkEVM layer-2 that scales Ethereum with zero-knowledge proofs. Query live network status (latest block height, network id, client version), fetch any block by height or the latest one (timestamp, transaction count, gas used / limit, base fee, miner), read the current gas price in wei and gwei, and look up the native ETH balance and transaction count of any address. A keyless, no-account JSON wrapper over the canonical Scroll JSON-RPC node — decoded from hex into plain decimals and human-readable ETH so you do not have to. Ideal for explorers, wallets, dashboards, gas estimators and analytics on the Scroll zkEVM rollup.

api.oanor.com/scroll-api

Live on-chain data from Starknet, the Ethereum Layer 2 zk-rollup built on the Cairo VM and STARK proofs, via a public Starknet JSON-RPC node. Starknet has no externally-owned accounts: every account is a smart contract with native account abstraction, and fees are paid in STRK or ETH. Resolve an address's transaction nonce, the account contract class it runs and its STRK and ETH balances, read straight from the fee-token contracts. Get a block's number, hash, status, timestamp, sequencer and transaction count. Look up any transaction with its type, finality and execution status, the address that sent it and the actual fee paid. Read the live chain state — the chain id, the JSON-RPC spec version, the latest block and whether the node is syncing. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Cosmos, Sui, NEAR, MultiversX, Solana and EVM on-chain APIs and from price feeds — this is Starknet's Cairo-account state, balances, blocks and transactions. Perfect for wallets, explorers and analytics apps.

api.oanor.com/starknet-api

Live zkSync Era on-chain data as an API, built on the open Blockscout explorer. zkSync Era (chain id 324) is a leading Ethereum zk-rollup Layer-2 by Matter Labs; its native currency is ETH and fees are a fraction of mainnet. Pull network stats (total blocks and transactions, ETH price, live gas), a gas oracle with slow, average and fast prices in gwei, the most recent blocks and full block detail by height or hash. Look up any address for its balance and contract status, any transaction by hash for its value, fee, status, sender and receiver, and any ERC-20 token by contract for its name, symbol, decimals, holders and USD rate. A universal search resolves addresses, tokens, blocks and transactions in one call. Real on-chain data, no key needed upstream. Ideal for zkSync wallets, block explorers, gas trackers, DeFi dashboards and on-chain analytics.

api.oanor.com/zksync-api