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Questions tagged [oracles]

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Get live price for token across different Cardano DEXes

I am working on a small pet project and I need to get the live price data for a token across multiple Cardano DEXes. For instance, I need the live price of WMT on MinSwap, MuesliSwap, GeniusYield and ...
Skelli's user avatar
  • 327
0 votes
1 answer
29 views

How to build smart contract depending on trusted server for additional information

I am trying to build a smart contract that will need to rely on off-chain information from a trusted server in order to gather to the state of something which will impact on how the UTXO should be ...
Kunikos's user avatar
  • 13
1 vote
1 answer
31 views

How does Oracle execute update operations?

I've read the Oracle implementation recently via https://plutus-pioneer-program.readthedocs.io/en/latest/pioneer/week6.html. As I understand, Oracle has 2 primary operations the following Use: an ...
manhdt's user avatar
  • 125
0 votes
1 answer
42 views

Track in real time the value of an Oracle

Is there a way to follow in real time the price of an asset like the current price of USD or any other currency, without having to create multiple transactions to update the oracle?
professor moriarty's user avatar
0 votes
2 answers
36 views

Decentralized Private Content Storage and Accessing

What would be the best way to store Private Video on chain, completely and only NFT holders should be able to access it Like the video can be encrypted and stored on IPFS or STORG. Only the NFT holder ...
Sam Jeffrey's user avatar
1 vote
2 answers
76 views

Plutus week 6 - Oracle example smart contract removed

Previously in Plutus pioneer program Week 6 shows how to implement an Oracle, now the example code has been removed. Is this because the way to implement Oracles has changed? and the previous approach ...
Zhong's user avatar
  • 13
3 votes
1 answer
35 views

Is there a way for a contract to look at the duration of the timeslot?

Are there oracles for knowing in real time the duration of the Cardano time slot in real time ? One learns in the Plutus Pioneer Program that the duration of this time slot can change, is there a way ...
fyusuf-a's user avatar
  • 165
3 votes
1 answer
78 views

Issues with oracle concurrency

I'm sort of running into an issue with the oracle described in the PPP. It looks like there is race between the oracle to update the exchange rate and the users to use the exchange rate in a swap. We ...
yoyobigmanyo's user avatar
7 votes
4 answers
203 views

How can an oracle guarantee certain update rates respectively uptime?

After reading the question General approach for allowing multiple smart contract transactions per block I'm wondering how an oracle can guarantee update rates respectively uptime. If too many ...
Johannes Sirsch's user avatar
5 votes
2 answers
90 views

What are oracle services going to look like on Cardano?

Can we expect an effort from IOHK to implement oracle services? Or should this be community driven?
Isaac Padberg's user avatar