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On a project in solidity, on Polygon/Matic, I need to fetch data from IPFS. So, an Oracle is mandatory, and I found 2 possible oracles:

Provable (old Oraclize) seems do not accept 2nd layer Polygon. => In this case, is there a solution to use Provable anyway, using for example a bridge Eth-Polygon?

ChainLink seems the good approach (Make a GET Request) but I cannot find out Oracle address and JobID on Chain.link => On the new Chain.link, How to find an Oracle address and JobID? I tried to get information on docs.chain.link and on Linkpool. Also, chainlink Market seems to have been updated, compared to the information found on the tutorial.

Are there other oracles able to do it?

2 Answers 2

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UI of Chain.link was updated recently, and you can find a list of oracle addresses here and Job IDs for multiple tasks here for different test nets.

If you want to use Chainlink Any API in main net, 2 options:

  1. You can find node operators in the official discord and ask them to provide a job id and operator contract address to you.
  2. Set up your own Chainlink node. To set up a Chainlink node, you can build from source code, run it in a docker, or directly use the service on naas.link which is also managed by link.pool.

Find more details here.

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  • Thank you Frank for your answer. My target, before to select Oracles solution, is to ensure that an Oracle is fitting my needs in term of: cost, complexity, security... So my expectation is to find a turnkey solution on Main net. 1. Chainlink's Discord seems have been updated too: no solution to request JobId or operators 2. Set up your own Chainlink node: I prefer to avoid this solution (and focus on Turkey solutions).
    – Aurel
    Nov 11 at 8:48
  • yw Aurel. Your choice. Just mention that channel "node" in Chainlink discord is where you can find node operators.
    – Frank Kong
    Nov 11 at 9:48
  • We start to be far from the Software side, but it s necessary to understand the chainlink services. Btw, I dont find any open channel for question, neither a "Node" channel.
    – Aurel
    Nov 11 at 19:53
  • @Aurel maybe ask MOD to grant you the access to "Node" channel. Try the oracle address here docs.chain.link/docs/any-api/testnet-oracles/….
    – Frank Kong
    Nov 15 at 12:47
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Since, it s not an obvious answer.

Provable support Polygon. You can find on provable an information proving, it s working on Polygon. The green dot (status) brings to the operational systems where polygon is mentioned. Also, a look on provableAPI.sol, show information about Polygon. Rem: no testnet faucet available.*

Unfortunately, the number of transaction made on provable seems very low when I check their Nodes contracts.

Chainlink It exists a website to search for nodes provider: https://www.chainlinkecosystem.com And then, the good practice is to look on the node website to find information for adress and jobid

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