> For the complete documentation index, see [llms.txt](https://gitbook-docs.coinmetrics.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook-docs.coinmetrics.io/cm-api-spec/catalog-v2/available-blockchain-block-assets.md). # Available blockchain block assets Returns a list of available assets for the blockchain blocks endpoint along with time ranges of available data. ```json {"openapi":"3.0.2","info":{"title":"Coin Metrics API v4","version":"4.0.0"},"tags":[{"name":"Catalog v2","description":"Catalog of available for your `api_key` data.\nUse the [Full catalog V2](#tag/Full-catalog-v2) endpoints for the full list of supported by Coin Metrics data.\n\n**Sections in this group:**\n- **Full catalog v2** (31 endpoints)\n\n**Endpoints on this page:**\n- `GET /catalog-v2/asset-chains` — Available asset chains\n- `GET /catalog-v2/asset-metrics` — Available asset metrics\n- `GET /catalog-v2/blockchain-v2/accounts` — Available blockchain accounts assets\n- `GET /catalog-v2/blockchain-v2/balance-updates` — Available blockchain balance updates assets\n- `GET /catalog-v2/blockchain-v2/blocks` — Available blockchain block assets\n- `GET /catalog-v2/blockchain-v2/rebasing-changes` — Available blockchain rebasing changes assets\n- `GET /catalog-v2/blockchain-v2/transactions` — Available blockchain transactions assets\n- `GET /catalog-v2/exchange-asset-metrics` — Available exchange-asset metrics\n- `GET /catalog-v2/exchange-metrics` — Available exchange metrics\n- `GET /catalog-v2/exchange-pair-metrics` — Available exchange-pair metrics\n- `GET /catalog-v2/index-candles` — Available index candles\n- `GET /catalog-v2/index-levels` — Available index levels\n- `GET /catalog-v2/institution-metrics` — Available institution metrics\n- `GET /catalog-v2/market-candles` — Available market candles\n- `GET /catalog-v2/market-contract-prices` — Available market contract prices\n- `GET /catalog-v2/market-funding-rates` — Available market funding rates\n- `GET /catalog-v2/market-funding-rates-predicted` — Available predicted market funding rates\n- `GET /catalog-v2/market-greeks` — Available market greeks\n- `GET /catalog-v2/market-implied-volatility` — Available market implied volatility\n- `GET /catalog-v2/market-liquidations` — Available market liquidations\n- `GET /catalog-v2/market-metrics` — Available market metrics\n- `GET /catalog-v2/market-openinterest` — Available market open interest\n- `GET /catalog-v2/market-orderbooks` — Available market orderbooks\n- `GET /catalog-v2/market-quotes` — Available market quotes\n- `GET /catalog-v2/market-trades` — Available market trades\n- `GET /catalog-v2/mempool-feerates` — Available mempool feerates\n- `GET /catalog-v2/mining-pool-tips-summary` — Available mining pool tips summaries\n- `GET /catalog-v2/pair-candles` — Available pair candles\n- `GET /catalog-v2/pair-metrics` — Available pair metrics\n- `GET /catalog-v2/protocol-metrics` — Available protocol metrics\n- `GET /catalog-v2/transaction-tracker` — Available transaction tracker assets"}],"servers":[{"url":"https://api.coinmetrics.io/v4"},{"url":"wss://api.coinmetrics.io/v4"},{"url":"https://community-api.coinmetrics.io/v4"}],"security":[{"api_key":[]}],"components":{"securitySchemes":{"api_key":{"description":"Coin Metrics API key can be specified as `?api_key=` query parameter.","in":"query","name":"api_key","type":"apiKey"}},"parameters":{"CatalogAssetId":{"description":"Comma separated list of assets. By default all assets are returned. Supports the following formats: `` - Coin Metrics asset ticker (e.g., `btc`), `:` - External provider symbol (e.g., `talos:BTC`), `:by-id:` - External provider numeric ID (e.g., `talos:by-id:24`). The `namespace` identifies the external data provider (e.g., `talos`). The `by-id` selector indicates lookup by a provider-specific numeric ID rather than symbol.","in":"query","name":"assets","schema":{"type":"array","items":{"type":"string"}},"explode":false},"PageSize":{"description":"Number of items per single page of results.
The value of this parameter is ignored if the endpoint supports the `format` parameter and its value is set to `json_stream`.","in":"query","name":"page_size","schema":{"default":100,"type":"integer","format":"int32","minimum":1,"maximum":10000}},"PagingFromWithStartByDefault":{"description":"Where does the first page start, at the start of the interval or at the end.
The value of this parameter is ignored if the endpoint supports the `format` parameter and its value is set to `json_stream`.","in":"query","name":"paging_from","schema":{"default":"start","enum":["start","end"],"type":"string","format":"PagingFrom"}},"NextPageToken":{"description":"Token for receiving the results from the next page of a query.
Should not be used directly. To iterate through pages just use `next_page_url` response field.","in":"query","name":"next_page_token","schema":{"type":"string"}},"CatalogResponseFormat":{"description":"Format of the response. Supported values are `json`, `json_stream`.","in":"query","name":"format","schema":{"type":"string","default":"json"}},"Pretty":{"description":"Human-readable formatting of JSON responses.","in":"query","name":"pretty","schema":{"type":"boolean","default":false}}},"responses":{"CatalogV2BlockchainBlocks":{"description":"List of blockchain block assets","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CatalogV2BlockchainBlocksResponse"}}}},"AssetNotFound":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorResponse"}}},"description":"Asset not found."},"Unauthorized":{"description":"Requested resource requires authorization.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorResponse"}}}},"UriTooLong":{"description":"Provided URI is too long. It must not be greater than 10000 symbols."}},"schemas":{"CatalogV2BlockchainBlocksResponse":{"properties":{"data":{"items":{"$ref":"#/components/schemas/CatalogV2BlockchainAssetsInfo"},"type":"array"},"next_page_token":{"$ref":"#/components/schemas/NextPageToken"},"next_page_url":{"$ref":"#/components/schemas/NextPageUrl"}},"required":["data"],"type":"object"},"CatalogV2BlockchainAssetsInfo":{"description":"Information about blockchain assets.","properties":{"asset":{"$ref":"#/components/schemas/AssetId"},"min_time":{"$ref":"#/components/schemas/MinTime"},"max_time":{"$ref":"#/components/schemas/MaxTime"},"experimental":{"$ref":"#/components/schemas/ExperimentalAsset"}},"required":["asset","min_time","max_time"],"type":"object"},"AssetId":{"description":"Unique name of the asset.","type":"string"},"MinTime":{"description":"Minimal available time for time series.","type":"string","format":"date-time"},"MaxTime":{"description":"Maximal available time for time series.","type":"string","format":"date-time"},"ExperimentalAsset":{"description":"If set to true, discrepancies might be present in the dataset for this asset, and that's expected.","type":"boolean"},"NextPageToken":{"description":"Token of the next page results for a given request.","type":"string"},"NextPageUrl":{"description":"URL of the next page results for a given request.","type":"string"},"ErrorResponse":{"properties":{"error":{"$ref":"#/components/schemas/ErrorObject"}},"required":["error"],"type":"object"},"ErrorObject":{"properties":{"type":{"description":"Error type string. Can be used for error identification.","type":"string"},"message":{"description":"Human-friendly error description. Can be amended without prior notification. Do not use for error identification in your code.","type":"string"}},"required":["type","description"],"type":"object"}}},"paths":{"/catalog-v2/blockchain-v2/blocks":{"get":{"summary":"Available blockchain block assets","description":"Returns a list of available assets for the blockchain blocks endpoint along with time ranges of available data.","operationId":"getCatalogV2BlockchainBlocks","tags":["Catalog v2"],"parameters":[{"$ref":"#/components/parameters/CatalogAssetId"},{"$ref":"#/components/parameters/PageSize"},{"$ref":"#/components/parameters/PagingFromWithStartByDefault"},{"$ref":"#/components/parameters/NextPageToken"},{"$ref":"#/components/parameters/CatalogResponseFormat"},{"$ref":"#/components/parameters/Pretty"}],"responses":{"200":{"$ref":"#/components/responses/CatalogV2BlockchainBlocks"},"400":{"$ref":"#/components/responses/AssetNotFound"},"401":{"$ref":"#/components/responses/Unauthorized"},"414":{"$ref":"#/components/responses/UriTooLong"}}}}}} ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://gitbook-docs.coinmetrics.io/cm-api-spec/catalog-v2/available-blockchain-block-assets.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.