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  • Jun 16 21:09
    aelmanaa edited #105
  • Jun 16 21:09
    aelmanaa edited #105
  • Jun 16 09:54
    aelmanaa opened #105
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Hedge-FX
@Hedge-FX
@oraclize-support fantastic thanks, im new to oracles
Hedge-FX
@Hedge-FX
@oraclize-support do you have any examples i could follow? I want to pass the_callback into a minter function
Minh Nguyen
@nhatminh12369
Hey @oraclize-support , I saw that my query on Kovan already received a __callback, however, the viewsCount is still empty meaning that the __callback didn't send a correct value
Oraclize Support
@oraclize-support
@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
Minh Nguyen
@nhatminh12369
@oraclize-support This is the txid of the callback transaction on kovan: 0x0188b254d00cb09991de70547b4ada3a0d111c5d493d6c3f6c5f91afce356bab. I checked on Etherscan, the _result parameter is empty.
Oraclize Support
@oraclize-support
@nhatminh - what does your query solidity code look like?
Minh Nguyen
@nhatminh12369
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())');
    }
I just added the currentID parameter to store the query id, the rest is the same as the sample code in YoutubeViews.sol
Oraclize Support
@oraclize-support

@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.

Minh Nguyen
@nhatminh12369
@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

Kisile
@Kisile
Anyone else been having issues today? Getting no __callbacks on rinkeby
@oraclize-support your service down or?
Kisile
@Kisile
Same for Kovan
Oraclize Support
@oraclize-support
I can confirm we are having some issues on some testnets, the ethereum-bridge component being used there isn't super stable unfortunately - on mainnet that's not being used. We’ll restore the service on testnet in the next few hours
1 reply
Dhanush
@Dhanush49294653_twitter
Hey @oraclize-support is provable implemented in polygon network?
Oraclize Support
@oraclize-support
Hi @Dhanush - the oracle is not implemented on Polygon, but token bridges are.
coiny123
@coiny123
hi all, there's a new EVM network called songbird. is there a way i can use the wolfram 'random number' question on songbird? i have to deploy the provable contract on songbird right?
Oraclize Support
@oraclize-support
@coiny123 - yes, you can use the ethereum-bridge for that: https://github.com/provable-things/ethereum-bridge
coiny123
@coiny123
@oraclize-support hey thanks but this is not on-chain right?
Oraclize Support
@oraclize-support
coin123 - what do you mean by on-chain?
Kisile
@Kisile
Still not getting callbacks on testnet
Hope this isn't a feature of main net
Dhanush
@Dhanush49294653_twitter
@oraclize-support when will provable be implemented in polygon network?
Dhanush
@Dhanush49294653_twitter
hi @oraclize-support provable is down in ropsten? and not getting _callback on kovan network.
Oraclize Support
@oraclize-support
Hello everyone, we are currently fixing kovan and ropsten and get back to you as soon as possible
0x1hack
@0x1hack
does provable random work on binance blockchain?
Oraclize Support
@oraclize-support
@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
Oraclize Support
@oraclize-support
@0x1hack - ignore the above, we are integrated on bsc mainnet and the random ds is available there too
Oraclize Support
@oraclize-support
Hello everyone - ropsten and kovan service are back working
Leon Alvarez Del Canto
@LeonAlvarez
is there any guide to use provable on bsc?
Oraclize Support
@oraclize-support
@LeonAlvarez - all the existing documentation holds for BSC too, since it's an EVM compatible chain. http://docs.provable.xyz/
Dhanush
@Dhanush49294653_twitter
Hi @oraclize-support i am still not getting _callback on kovan and ropsten network.
ryuhei0x
@ryuhei0x
@oraclize-support , I sent a provable query spending some rinkeby eth but didn't receive tx for callback yet.
Is the service functional on rinkeby network?
Here is the query id that was sent. 0x7ef8a6ed31e931a5d2b0170131f1a828ffb12e1a13bb40674cc29ee485a3e13e
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
Oraclize Support
@oraclize-support
Hi @ryuhei0x - here's the callback, unfortunately I saw there was an error due to the fact that all the attempts to retrieve the IPFS multihash through our gateway ran into timeout. Are you sure to have uploaded the zip correctly?
ryuhei0x
@ryuhei0x
yes, I am sure.
I tried another query and got callback txn properly but result param is empty
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
ryuhei0x
@ryuhei0x
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
Oraclize Support
@oraclize-support
ryuhei0x - sure we will and get back to you
ryuhei0x
@ryuhei0x
any news? @oraclize-support
Oraclize Support
@oraclize-support
ryuhei0x - rinkeby can't be used at the moment as we are waiting for a node of ours to be synced
Can you retry the query on kovan? We increased the timeout of for the download of the multihash at 2mins, so it should be working now
Oraclize Support
@oraclize-support
Hello everyone, rinkeby testnet service has been restored
TKHuang
@TKHuang
@oraclize-support is rinkeby testnet still working??
I can't get my callback txn, I'v wait for 10 mins