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Blockscout Optimism Withdrawals API
x402
Blockscout Optimism Withdrawals API is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-11).
Retrieves paginated list of Optimism L2-to-L1 withdrawal transactions for a given chain, including status, value, nonce, and transaction hashes
Price / call$0.002
Success—
StatusUnknown
How this service works
Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data
Output
A paginated JSON response containing an array of Optimism withdrawal items, each with sender address details (including ENS, tags, scam flags), withdrawal status, message data, nonce, value, gas limit, L1 and L2 transaction hashes, challenge period end time, and portal contract address, plus next_page_params for pagination.
Example use cases
Monitor pending bridge withdrawals
“Show me all pending Optimism withdrawals on chain 10 so I can see which ones are still in the challenge period and haven't settled on L1 yet.”
Track a specific withdrawal by nonce
“I submitted an Optimism withdrawal with nonce 42 on chain 8453 — can you look it up on Blockscout and tell me if it's been proven or finalized on L1?”
Audit withdrawal history for compliance
“Pull the last 50 Optimism withdrawal records from chain 10 on Blockscout, including sender addresses, values, and L1 transaction hashes, so I can audit our bridge activity.”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/optimism/withdrawalsWhen to prefer
Use this endpoint when you specifically need Optimism L2-to-L1 bridge withdrawal data — including status, challenge periods, and settlement hashes — for an OP-stack chain. Prefer it over generic transaction search when you need structured withdrawal-specific fields like msg_nonce, challenge_period_end, or portal_contract_address_hash.
Side effects
- Invalid or unsupported chain_id returns empty results or 404
- Missing required path parameter chain_id causes routing failure
- Pagination with incorrect items_count or nonce may return unexpected page boundaries
- Chain not running Optimism stack returns no withdrawal data
- Rate limiting or payment failure (402) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"items": [
{
"from": {
"hash": "string",
"name": "string",
"is_scam": true,
"metadata": {},
"proxy_type": "string",
"reputation": "string",
"is_contract": true,
"is_verified": true,
"public_tags": [
{
"label": "string",
"address_hash": "string",
"display_name": "string"
}
],
"private_tags": [
{
"label": "string",
"address_hash": "string",
"display_name": "string"
}
],
"ens_domain_name": "string",
"implementations": [
{
"name": "string",
"address_hash": "string"
}
],
"watchlist_names": [
{
"label": "string",
"display_name": "string"
}
]
},
"status": "string",
"msg_data": "string",
"msg_nonce": 0,
"msg_value": "string",
"l2_timestamp": "string",
"msg_gas_limit": "string",
"msg_nonce_raw": "string",
"msg_nonce_version": 0,
"l1_transaction_hash": "string",
"l2_transaction_hash": "string",
"challenge_period_end": "string",
"msg_sender_address_hash": "string",
"msg_target_address_hash": "string",
"portal_contract_address_hash": "string"
}
],
"next_page_params": {}
}
}Tags
x402
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