Question: I’m playing around with Chainlink’s “Register an Upkeep using your own deployed contract” example: https://docs.chain.link/docs/chainlink-keepers/register-upkeep/#register-an-upkeep-using-your-own-deployed-contract However, once the UpkeepIDConsumerExample is deployed with the Link Token Contact, Registry and Registrar parameters for the respective chain, I am unable to use ...

Question: I was eventually trying to run this code in remix IDE, where I was running this using 0.6.6 version of Solidity and ran into this error. I’ve tried using some other versions like 0.8 and 0.6 as well. Answer: ...

Question: I am currently learning how to start developing on ChainLink, and I saw that there is a GetRoundData() method that is used to return data from a specific timestamp. When I dig into the code and I found that ...

Question: When running make install on ubuntu server 20.04 the following error occurs: error @: The engine “node” is incompatible with this module. Expected version “^16.0.0”. Got “12.22.2” and it exits. node –version returns v12.22.2 yarn –version returns 1.22.17 go ...

Question: I am a Chainlink beginner attempting to set up a Chainlink node on Rinkeby. I have the node running and can access the operator GUI. When I attempt to set up a job (following the documentation here: https://docs.chain.link/docs/fulfilling-requests/) I ...

Question: I would like to know if it is possible to generate a unique number for each address, I tried mapping but it does not work } here is the mapping Thanks! Answer: You are close with what you have ...

Question: I am working on a project that will need to use ChainLink to make external API calls from the Ethereum blockchain. I was testing out the demo code like so: However, I am consistently running into a Gas estimation ...

Question: I created my own eternal Adapter, that retruns a string as result. The node runs the job correctly and woun’t give any error. I think the error happens in the smart contract. Here is my current smart contract, edited ...

Question: Thanks to Patrick and after reading the Chainlink’s blog on how to build blockchain lottery, I am eager to build a similar “version”. It will be using the latest Chainlink’s version of VRFv2 and Keeper. However, the supported test ...