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@@ -196,6 +196,7 @@ API | Description | Auth | HTTPS | CORS | |
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| [Chainlink](https://chain.link/developer-resources) | Build hybrid smart contracts with Chainlink | No | Yes | Unknown | |
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| [Covalent](https://www.covalenthq.com/docs/api/) | Multi-blockchain data aggregator platform | `apiKey` | Yes | Unknown | |
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| [Nownodes](https://nownodes.io/) | Blockchain-as-a-service solution that provides high-quality connection via API | `apiKey` | Yes | Unknown | |
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| [The Graph](https://thegraph.com) | Indexing protocol for querying networks like Ethereum with GraphQL | No | Yes | Unknown | |
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**[⬆ Back to Index](#index)** |
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### Books |
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@@ -325,7 +326,6 @@ API | Description | Auth | HTTPS | CORS | |
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| [Nomics](https://nomics.com/docs/) | Historical and realtime cryptocurrency prices and market data | `apiKey` | Yes | Yes | |
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| [Poloniex](https://poloniex.com/support/api/) | US based digital asset exchange | `apiKey` | Yes | Unknown | |
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| [Technical Analysis](https://technical-analysis-api.com) | Cryptocurrency prices and technical analysis | `apiKey` | Yes | No | |
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| [The Graph](https://thegraph.com) | Indexing protocol for querying networks like Ethereum with GraphQL | No | Yes | Unknown | |
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| [VALR](https://docs.valr.com/) | Cryptocurrency Exchange based in South Africa | `apiKey` | Yes | Unknown | |
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| [WallstreetBets](https://dashboard.nbshare.io/apps/reddit/api/) | WallstreetBets Stock Comments Sentiment Analysis | No | Yes | Unknown | |
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| [WorldCoinIndex](https://www.worldcoinindex.com/apiservice) | Cryptocurrencies Prices | `apiKey` | Yes | Unknown | |
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David Davó
2 years ago