> ## Documentation Index > Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt > Use this file to discover all available pages before exploring further. # getAssetProofBatch > Retrieve Merkle proofs for multiple compressed Solana NFTs in a single batch request for efficient verification and on-chain operations ## Request Parameters ## OpenAPI ````yaml openapi/das-api/getAssetProofBatch.yaml POST / openapi: 3.1.0 info: title: Solana Batch Compressed NFT Verification API version: 1.0.0 description: > Advanced Solana Digital Asset Standard (DAS) API for efficiently retrieving multiple cryptographic merkle proofs for compressed NFTs in a single request. This optimized batch verification API enables applications to validate multiple compressed assets simultaneously, significantly reducing API calls and improving performance for marketplace listings, wallet displays, and other applications working with collections of compressed Solana NFTs. license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html servers: - url: https://mainnet.helius-rpc.com description: Mainnet RPC endpoint - url: https://devnet.helius-rpc.com description: Devnet RPC endpoint security: [] paths: /: post: tags: - RPC summary: getAssetProofBatch description: > Efficiently retrieve cryptographic merkle proofs for multiple compressed Solana NFTs in a single batch request. This optimized verification API returns the complete proof paths required to validate multiple compressed digital assets' existence and data integrity on the Solana blockchain without requiring separate API calls for each NFT. Essential for high-performance applications like marketplaces, wallets, and gaming platforms that need to verify ownership and authenticity of multiple compressed NFTs simultaneously with minimal latency and API usage. operationId: rpc parameters: - name: api-key in: query description: >- Your Helius API key required for authenticating batch requests to the Solana compression API. required: true schema: type: string example: string requestBody: content: application/json: schema: type: object required: - jsonrpc - id - method - params properties: jsonrpc: type: string enum: - '2.0' description: The version of the JSON-RPC protocol. default: '2.0' id: type: string description: An ID to identify the request. default: '1' method: type: string enum: - getAssetProofBatch description: The name of the DAS method to invoke. default: getAssetProofBatch params: type: object default: ids: - Bu1DEKeawy7txbnCEJE4BU3BKLXaNAKCYcHR4XhndGss required: - ids properties: ids: type: array items: type: string description: >- Array of unique identifiers (mint addresses) of the compressed Solana NFTs to retrieve merkle proofs for. example: Bu1DEKeawy7txbnCEJE4BU3BKLXaNAKCYcHR4XhndGss responses: '200': description: Successful response content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' result: type: object properties: Bu1DEKeawy7txbnCEJE4BU3BKLXaNAKCYcHR4XhndGss: type: object properties: last_indexed_slot: type: integer description: >- All data up to and including this slot is guaranteed to have been indexed. example: 365750752 root: type: string description: >- The root hash of the Solana state compression merkle tree containing this compressed NFT. example: 2o6Y6EiY3WXhoaEpei2pHmHLYnHDcEQVhgD89GrGHDBH proof: type: array description: >- Array of merkle proof hashes needed to cryptographically verify this Solana compressed NFT's existence. items: type: string example: - EmJXiXEAhEN3FfNQtBa5hwR8LC5kHvdLsaGCoERosZjK - 7NEfhcNPAwbw3L87fjsPqTz2fQdd1CjoLE138SD58FDQ node_index: type: integer description: >- The position index of this compressed Solana NFT in the merkle tree structure. example: 16384 leaf: type: string description: >- The leaf hash representing this compressed Solana NFT's data in the merkle tree. example: 6YdZXw49M97mfFTwgQb6kxM2c6eqZkHSaW9XhhoZXtzv tree_id: type: string description: >- The unique identifier of the Solana merkle tree where this compressed NFT is stored. example: 2kuTFCcjbV22wvUmtmgsFR7cas7eZUzAu96jzJUvUcb7 burnt: false id: type: string example: my-id '400': description: >- Bad Request. The server could not understand the request due to invalid syntax. content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' error: type: object properties: code: type: integer example: -32602 message: type: string example: Invalid request parameters. id: type: string example: '1' '401': description: >- Unauthorized. The client must authenticate itself to get the requested response. content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' error: type: object properties: code: type: integer example: -32001 message: type: string example: Authentication failed. Missing or invalid API key. id: type: string example: '1' '403': description: Forbidden. The client does not have access rights to the content. content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' error: type: object properties: code: type: integer example: -32003 message: type: string example: You do not have permission to access this resource. id: type: string example: '1' '404': description: Not Found. The server can not find the requested resource. content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' error: type: object properties: code: type: integer example: -32004 message: type: string example: One or more assets in the batch were not found. id: type: string example: '1' '429': description: >- Too Many Requests. The user has sent too many requests in a given amount of time. content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' error: type: object properties: code: type: integer example: -32029 message: type: string example: Rate limit exceeded. Please try again later. id: type: string example: '1' '500': description: >- Internal Server Error. The server has encountered a situation it doesn't know how to handle. content: application/json: schema: type: object properties: jsonrpc: type: string example: '2.0' error: type: object properties: code: type: integer example: -32000 message: type: string example: An unexpected error occurred on the server. id: type: string example: '1' security: - ApiKeyQuery: [] components: securitySchemes: ApiKeyQuery: type: apiKey in: query name: api-key description: >- Your Helius API key. You can get one for free in the [dashboard](https://dashboard.helius.dev/api-keys). ````