> ## Documentation Index > Fetch the complete documentation index at: https://docs.blockscout.com/llms.txt > Use this file to discover all available pages before exploring further. # Get withdrawal messages for a transaction. > Returns the list of Rollup withdrawal messages (L2ToL1Tx events) emitted by the given transaction. ## OpenAPI ````yaml /openapi-specs/pro-api-v12.json get /{chain_id}/api/v2/arbitrum/messages/withdrawals/{transaction_hash} openapi: 3.0.0 info: contact: email: info@blockscout.com url: https://dev.blockscout.com/ description: >- Blockscout's universal multichain API for accessing explorer-indexed blockchain data - such as addresses, transactions, blocks, tokens, NFTs, contracts, and related search/results endpoints - across supported networks through a single standardized interface. title: Blockscout Pro API version: 0.5.0 servers: - url: https://api.blockscout.com security: - bearerAuth: [] - apiKeyAuth: [] paths: /{chain_id}/api/v2/arbitrum/messages/withdrawals/{transaction_hash}: get: tags: - arbitrum summary: Get withdrawal messages for a transaction. description: >- Returns the list of Rollup withdrawal messages (L2ToL1Tx events) emitted by the given transaction. operationId: BlockScoutWeb.API.V2.ArbitrumController.withdrawals parameters: - description: Transaction hash. in: path name: transaction_hash required: true schema: $ref: '#/components/schemas/FullHash' - description: The ID of the blockchain in: path name: chain_id required: true schema: type: string responses: '200': content: application/json: schema: additionalProperties: false properties: items: items: $ref: '#/components/schemas/Arbitrum.Withdrawal' type: array required: - items type: object description: Withdrawal messages for the transaction. headers: x-credits-remaining: description: >- Number of credits remaining in your plan. Resets daily on the free plan, monthly otherwise. schema: type: integer x-ratelimit-limit: description: >- Available requests per second with your plan. Returns -1 on internal error. schema: type: integer x-ratelimit-remaining: description: >- Remaining rate limit based on your queries. Returns -1 on internal error. schema: type: integer x-ratelimit-reset: description: >- Time in milliseconds until the rate limit resets. Returns -1 on internal error. schema: type: integer '422': content: application/json: schema: $ref: '#/components/schemas/JsonErrorResponse' description: Unprocessable Entity components: schemas: FullHash: pattern: ^0x([A-Fa-f0-9]{64})$ title: FullHash type: string Arbitrum.Withdrawal: additionalProperties: false description: Arbitrum Rollup withdrawal message. properties: arb_block_number: description: Rollup block number. minimum: 0 type: integer caller_address_hash: description: Address of the account that initiated the withdrawal on the Rollup. pattern: ^0x([A-Fa-f0-9]{40})$ type: string callvalue: description: Native coin amount in wei attached to the withdrawal message. pattern: ^-?([1-9][0-9]*|0)$ type: string completion_transaction_hash: $ref: '#/components/schemas/FullHashNullable' data: description: >- ABI-encoded calldata passed to the destination address when the withdrawal is executed on the Parent chain. Empty (`0x`) for plain native coin transfers. pattern: ^0x([A-Fa-f0-9]*)$ type: string destination_address_hash: description: >- Recipient address on the Parent chain that will receive funds when the withdrawal is executed. pattern: ^0x([A-Fa-f0-9]{40})$ type: string eth_block_number: description: Parent chain block number. minimum: 0 type: integer id: description: Withdrawal message ID. minimum: 0 type: integer l2_timestamp: description: Unix timestamp of the originating transaction. minimum: 0 type: integer status: description: >- Withdrawal lifecycle status. Progresses from `initiated` (L2ToL1Tx event emitted) through `sent` (included in an RBlock) and `confirmed` (RBlock confirmed on Parent chain) to `relayed` (executed on Parent chain). `unknown` indicates the status could not be determined, e.g. when the Parent chain RPC is unavailable. enum: - unknown - initiated - sent - confirmed - relayed type: string token: additionalProperties: false description: >- Token withdrawal details. Present when the withdrawal is for a bridged token, null for native coin. nullable: true properties: address_hash: description: Token contract address on the Parent chain. nullable: true pattern: ^0x([A-Fa-f0-9]{40})$ type: string amount: description: Token amount in the token's smallest unit. pattern: ^-?([1-9][0-9]*|0)$ type: string decimals: minimum: 0 nullable: true type: integer destination_address_hash: description: Token recipient address on the Parent chain. nullable: true pattern: ^0x([A-Fa-f0-9]{40})$ type: string name: nullable: true type: string symbol: nullable: true type: string required: - address_hash - destination_address_hash - amount - decimals - name - symbol type: object required: - id - status - caller_address_hash - destination_address_hash - arb_block_number - eth_block_number - l2_timestamp - callvalue - data - token - completion_transaction_hash title: Arbitrum.Withdrawal type: object JsonErrorResponse: properties: errors: items: properties: detail: example: null value where string expected type: string source: properties: pointer: example: /data/attributes/petName type: string required: - pointer type: object title: example: Invalid value type: string required: - title - source - detail type: object type: array required: - errors title: JsonErrorResponse type: object FullHashNullable: nullable: true pattern: ^0x([A-Fa-f0-9]{64})$ title: FullHashNullable type: string securitySchemes: bearerAuth: bearerFormat: JWT description: API key passed as a Bearer token in the Authorization header. scheme: bearer type: http apiKeyAuth: description: API key passed as the `apikey` query parameter. in: query name: apikey type: apiKey ````