{"slug":"b2a-finality-b2a-finality-endpoint-workers-dev-v1-finality-a84b58","title":"ZKsync Era transaction finality lookup","host":"b2a-finality.b2a-finality-endpoint.workers.dev","method":"GET","resource":"https://b2a-finality.b2a-finality-endpoint.workers.dev/v1/finality","category":"code","description":"ZKsync Era transaction finality lookup. Returns the rollup-reported confirmation level, execution status and supporting evidence for one transaction hash. A deeper tier adds an independent Ethereum L1 cross-check of the commit, prove and execute transactions. Responses include a signed provenance re","price_listed":0.03,"price_asked":0.03,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":336,"reported_calls_30d":4,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"chain":"zksync","depth":"standard","tx":"0xabababababababababababababababababababababababababababababababab"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"chain":{"description":"Rollup identifier (zksync)","enum":["zksync"],"type":"string"},"depth":{"description":"Finality depth: standard, or deep (zksync only, adds the L1 cross-check)","enum":["standard","deep"],"type":"string"},"tx":{"description":"32-byte transaction hash on that rollup","pattern":"^0x[0-9a-fA-F]{64}$","type":"string"}},"required":["chain","tx"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"confirmation_level":{"enum":["pending","sequencer_confirmed","l1_data_posted","l1_proven","finalized","inconclusive"],"type":"string"},"evidence":{"type":"array"},"execution_status":{"enum":["success","reverted","unknown"],"type":"string"},"missing":{"type":"array"},"receipt":{"type":"object"},"schema_version":{"type":"string"},"tier":{"enum":["standard","deep","batch"],"type":"string"}},"required":["schema_version","evidence","missing","receipt"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.03,"price_match":true,"latency_ms":336,"error":null}],"description_full":"ZKsync Era transaction finality lookup. Returns the rollup-reported confirmation level, execution status and supporting evidence for one transaction hash. A deeper tier adds an independent Ethereum L1 cross-check of the commit, prove and execute transactions. Responses include a signed provenance receipt and list any missing data.","last_updated":"2026-10-23T19:20:11.972Z","schemes":["exact"]}