@Hedge-Fx the callback is the entrypoint so if you want to do anything with the result you can postprocess it within callback and then call your own minter function straight from there, there are plenty of examples in our official doc at docs.provable.xyz or on github in the ethereum-examples repo of the provable-things org
@nhatminh12369 please share here the txid of the callback on kovan or check yourself from the tx payload what was received by the callback method: there may be an issue with your query or with the way your callback parses the result
function update() public payable
{
emit LogNewProvableQuery("Provable query was sent, standing by for the answer...");
currentID = provable_query("URL", 'html(https://www.youtube.com/watch?v=9bZkp7q19f0).xpath(//*[contains(@class, "watch-view-count")]/text())');
}currentID parameter to store the query id, the rest is the same as the sample code in YoutubeViews.sol
@nhatminh12369 - unfortunately that sample code is deprecated (we will mark as deprecated soon, since there are a lot of users reporting the same issue) because the youtube html page retrieved by our engine misses the html element containing the number of views.
You can check that yourself running this command
`curl https://www.youtube.com/watch?v=9bZkp7q19f0` -o youtube.html
and check the content of the youtube.html\ page.
We suggest you to run the test above before running the query in order to be 100% sure that the html element you're looking for exists inside the page.
@oraclize-support it worked for me now when I try with my own API. However, it took 1h20 mins for the callback to be called on Kovan and that's very long (https://kovan.etherscan.io/address/0xCB511504a4Dd627a395d043a9C41a23A1CB47706). I tried ChainLink before and it usually took around 1-2 minutes to receive the callback call. Why does Provable take so long to make the callback call? Is it the same on other test nets and main net?
unfortunately that sample code is deprecated
btw, thanks for letting me know, I didn't notice that an html element was missing
@oraclize-support your service down or?
1 reply
@coiny123 - yes, you can use the
ethereum-bridge for that: https://github.com/provable-things/ethereum-bridge
Hope this isn't a feature of main net
@0x1hack - we're not integrated there but you can use the
ethereum-bridge if you want to on bsc: https://github.com/provable-things/ethereum-bridge
@LeonAlvarez - all the existing documentation holds for BSC too, since it's an EVM compatible chain. http://docs.provable.xyz/
I am curious if the service is fully functional on mainnet at this moment because I had some troubles with that on mainnet as well in the past.
Can you please confirm if you are 100% sure with mainnet service?
@oraclize-support
0x2d3d649f29c9feb642be168280cd3b675470add866198a3f06d8c82681ef390b
here is the query id.
when I ran the script on my local, I am getting result properly and I also downloaded uploaded ipfs and confirmed the script was properly uploaded.
do you have any insight on this issue? @oraclize-support
Here is another example.
I built very simple script that prints a simple string and sent a query using that ipfs.
Here is the zip file which was uploaded to ipfs. https://ipfs.io/ipfs/QmecFXMij1VsitoNzoBKPYizKsX4mCxXj4RpD3BXNcCUMb
Here is the query id. 0xce58f76f5be42dd201b676fe702f76ee59bbbf378279344c3b16f1d497bc3e70
This time, I didn't get any callback txn. Would you take a look into that? @oraclize-support
I built very simple script that prints a simple string and sent a query using that ipfs.
Here is the zip file which was uploaded to ipfs. https://ipfs.io/ipfs/QmecFXMij1VsitoNzoBKPYizKsX4mCxXj4RpD3BXNcCUMb
Here is the query id. 0xce58f76f5be42dd201b676fe702f76ee59bbbf378279344c3b16f1d497bc3e70
This time, I didn't get any callback txn. Would you take a look into that? @oraclize-support
