ZKsync Era transaction finality lookup
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.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
336 msmedian answer time
$0.03listed price per call
$0.03price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://b2a-finality.b2a-finality-endpoint.workers.dev/v1/finality
| Category | Code and developer |
|---|---|
| Provider host | b2a-finality.b2a-finality-endpoint.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.03 | 336 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "zksync",
"depth": "standard",
"tx": "0xabababababababababababababababababababababababababababababababab"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}