> ## Documentation Index > Fetch the complete documentation index at: https://docs.gomaestro.org/llms.txt > Use this file to discover all available pages before exploring further. > Get specific Cardano transaction output (UTxO) by transaction hash and output index with asset details and datum information. # Transaction output by output reference ## OpenAPI ````yaml cardano/blockchain-indexer-api/openapi.json get /transactions/{tx_hash}/outputs/{index}/txo openapi: 3.0.3 info: title: Cardano - Blockchain Indexer API description: Core indexer endpoints dedicated to Cardano. contact: name: Maestro Blockchain Inc. url: https://gomaestro.org/ email: info@gomaestro.org license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.txt version: v1.8.0 servers: - url: https://mainnet.gomaestro-api.org/v1 description: Cardano Mainnet - url: https://preprod.gomaestro-api.org/v1 description: Cardano Preprod - url: https://preview.gomaestro-api.org/v1 description: Cardano Preview security: - api-key: [] tags: - name: Maestro paths: /transactions/{tx_hash}/outputs/{index}/txo: get: tags: - Transactions summary: Transaction output by output reference description: >- Returns the specified transaction output. Attempts to resolve the datum hash to the corresponding bytes and JSON, should the output contain a datum hash. operationId: txo_by_txo_ref parameters: - name: with_cbor in: query description: Include the CBOR encoding of the transaction output in the response required: false schema: type: boolean nullable: true - name: tx_hash in: path description: Transaction Hash required: true schema: type: string - name: index in: path description: Output Index required: true schema: type: integer minimum: 0 - name: amounts-as-strings in: header description: Large numbers returned as strings if set to `true` required: false schema: type: string nullable: true responses: '200': description: Get a transaction output via it's output reference content: application/json: schema: $ref: '#/components/schemas/TimestampedUtxo' example: data: tx_hash: >- 291b983ac75275a933415475d6417413b34eaccc5f0794fd7b9e8d04e7fe077e index: 0 assets: - unit: lovelace amount: 1224040 - unit: >- 0c64d6d0371d11185aae649cf3a169040e94214137137b531ebb16c2446a65644f7261636c654e4654 amount: 1 address: >- addr_test1wzdtu0djc76qyqak9cj239udezj2544nyk3ksmfqvaksv7c9xanpg datum: type: hash hash: >- 5fc2400956b1d1828bea0be9c94e95f2b3cebda27c21b07e8a6bada2b2588163 bytes: >- d8799f584073ab91123886242e4d02de6ed05490d684e99a99c49b957a5f943a80655ac0744372adeacdc7dedb95a818ce676886f1306d439152b82d48de71688008840d00d8799fd8799f1a00030d401a000116e5ffd8799fd8799fd87a9f1b000001863d492040ffd87a80ffd8799fd87a9f1b000001863d649780ffd87a80ffff43555344ff581c0c64d6d0371d11185aae649cf3a169040e94214137137b531ebb16c2ff json: fields: - bytes: >- 73ab91123886242e4d02de6ed05490d684e99a99c49b957a5f943a80655ac0744372adeacdc7dedb95a818ce676886f1306d439152b82d48de71688008840d00 - fields: - fields: - int: 200000 - int: 71397 - fields: - fields: - constructor: 1 fields: - int: 1676065448000 - constructor: 1 fields: [] - fields: - constructor: 1 fields: - int: 1676067248000 - constructor: 1 fields: [] - bytes: '555344' - bytes: >- 0c64d6d0371d11185aae649cf3a169040e94214137137b531ebb16c2 reference_script: null txout_cbor: null last_updated: timestamp: '2022-10-10 20:25:28' block_hash: >- 3c504cc4ce12a511db04838b544820c4e2281c0209a906ca17981cf63a084b7b block_slot: 32295757 '400': description: Malformed query parameters '404': description: No results found '500': description: Internal server error components: schemas: TimestampedUtxo: type: object description: >- Timestamped response. Returns the endpoint response data along with the chain-tip of the indexer, which details at which point in the chain's history the data was correct as-of. required: - data - last_updated properties: data: $ref: '#/components/schemas/Utxo' last_updated: $ref: '#/components/schemas/LastUpdated' Utxo: type: object description: Transaction output required: - tx_hash - index - assets - address properties: address: type: string description: Address which controls the UTxO assets: type: array items: $ref: '#/components/schemas/Asset' description: List of assets contained in the UTxO datum: allOf: - $ref: '#/components/schemas/DatumOption' nullable: true index: type: integer format: int64 description: UTxO transaction index minimum: 0 reference_script: allOf: - $ref: '#/components/schemas/Script' nullable: true tx_hash: type: string description: UTxO transaction hash LastUpdated: type: object description: >- Details of the most recent block processed by the indexer (aka chain tip); that is, the data returned is correct as of this block in time. required: - timestamp - block_hash - block_slot properties: block_hash: type: string description: >- Hex-encoded hash of the most recently processed block (aka chain tip) block_slot: type: integer format: int64 description: Absolute slot of the most recently processed block (aka chain tip) minimum: 0 timestamp: type: string description: UTC timestamp of when the most recently processed block was minted Asset: type: object description: Lovelace or native asset required: - unit - amount properties: amount: $ref: '#/components/schemas/NumOrString' unit: type: string description: >- Asset (either `lovelace` or concatenation of hex encoded policy ID and asset name for native asset) DatumOption: type: object description: Datum (inline or hash) required: - type - hash properties: bytes: type: string description: >- Hex encoded datum CBOR bytes (`null` if datum type is `hash` and corresponding datum bytes have not been seen on-chain) nullable: true hash: type: string description: Datum hash json: type: object description: >- JSON representation of the datum (`null` if datum type is `hash` and corresponding datum bytes have not been seen on-chain) nullable: true type: $ref: '#/components/schemas/DatumOptionType' Script: type: object description: Details of a Native or Plutus script required: - hash - type - bytes properties: bytes: type: string description: Script bytes hash: type: string description: Script hash json: type: object description: >- JSON representation of script (`null` if script not of `native` type) nullable: true type: $ref: '#/components/schemas/ScriptType' NumOrString: oneOf: - type: integer format: int64 description: Unsigned 64-bit integer minimum: 0 - type: integer description: Unsigned 128-bit integer minimum: 0 - type: integer format: int64 description: Signed 64-bit integer - type: number format: double description: 64-bit floating point number - type: string description: String representation of an integer or number description: >- Integer or number by default, or a string representation if the `amounts-as-strings` header is set to `true` DatumOptionType: type: string description: Datum type (inline datum or datum hash) enum: - hash - inline ScriptType: type: string description: Script type and version enum: - native - plutusv1 - plutusv2 - plutusv3 securitySchemes: api-key: type: apiKey in: header name: api-key description: Project API Key ````