{"slug":"saylorinnovations-com-api-chain-block-number-910341","title":"Latest block number for 16 EVM chains","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/chain/block-number","category":"other","description":"Latest block number for 16 EVM chains: chain tip height, block hash, block time and head age in seconds, read straight from chain RPC.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":310,"reported_calls_30d":3,"reported_payers_30d":2,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"chain":"base"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"chain":{"description":"chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id","type":"string"}},"required":["chain"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"age_seconds":{"description":"seconds between the block timestamp and now; large values mean a stalled node or chain","type":["number","null"]},"block_hash":{"description":"hash of the latest block","type":["string","null"]},"block_number":{"description":"height of the latest block","type":"number"},"block_time":{"description":"timestamp of the latest block (ISO 8601 UTC)","type":["string","null"]},"chain":{"description":"the chain name that was queried","type":"string"},"chain_id":{"description":"EIP-155 chain id of that network","type":"number"},"source":{"description":"where the data was read from","type":"string"}},"required":["chain","chain_id","block_number","source"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-21","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":310,"error":null}],"description_full":"Latest block number for 16 EVM chains: chain tip height, block hash, block time and head age in seconds, read straight from chain RPC.","last_updated":"2026-10-21T02:12:43.71Z","schemes":["exact"]}