Any good smartcontract for “business calendar” oracles? The 2019 Stack Overflow Developer...
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Any good smartcontract for “business calendar” oracles?
The 2019 Stack Overflow Developer Survey Results Are InWhat are the most important potential attack vectors on oracles?Aren't oracles extremely data consuming?Can oracles send data to smart contracts on multiple blockchains?What is the difference from oracles and smart oracles?Can any smart contract be forked?Oracles and randomness, Creating or solving problems?How does Ethereum handle undeterministic results from oracles?What's the best realized dapps for fair betting without oracles?How to know the price of the day of ETH in USD by Oracles?Tutorial to understand technical details of Oracles in Ethereum
is anybody aware of some smart-contract that can be used as external "trustable" oracle for no-so-simple scenarios, like for example calculating the number of non-festive days passed since a given date or time-windows.
I'm thinking of some external (trusted) entity that is allowed to fill such calendar and sign when a new day has passed, ...
I'm thinking about use-cases like:
- Some smart-contract internal state change or some payment must be allowed just after 10 working days, excluding weekends.
oracles calendar
asked 4 hours ago
earizonearizon
20419
add a comment |
is anybody aware of some smart-contract that can be used as external "trustable" oracle for no-so-simple scenarios, like for example calculating the number of non-festive days passed since a given date or time-windows.
I'm thinking of some external (trusted) entity that is allowed to fill such calendar and sign when a new day has passed, ...
I'm thinking about use-cases like:
- Some smart-contract internal state change or some payment must be allowed just after 10 working days, excluding weekends.
oracles calendar
asked 4 hours ago
earizonearizon
20419
add a comment |
is anybody aware of some smart-contract that can be used as external "trustable" oracle for no-so-simple scenarios, like for example calculating the number of non-festive days passed since a given date or time-windows.
I'm thinking of some external (trusted) entity that is allowed to fill such calendar and sign when a new day has passed, ...
I'm thinking about use-cases like:
- Some smart-contract internal state change or some payment must be allowed just after 10 working days, excluding weekends.
oracles calendar
asked 4 hours ago
earizonearizon
20419
is anybody aware of some smart-contract that can be used as external "trustable" oracle for no-so-simple scenarios, like for example calculating the number of non-festive days passed since a given date or time-windows.
I'm thinking of some external (trusted) entity that is allowed to fill such calendar and sign when a new day has passed, ...
I'm thinking about use-cases like:
- Some smart-contract internal state change or some payment must be allowed just after 10 working days, excluding weekends.
oracles calendar
oracles calendar
asked 4 hours ago
earizonearizon
20419
asked 4 hours ago
earizonearizon
20419
edited 4 hours ago
earizon
asked 4 hours ago
earizonearizon
20419
asked 4 hours ago
earizonearizon
20419
asked 4 hours ago
earizonearizon
20419
20419
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Oracle sounds complicated and gas gushing approach.
I suggest this:
A special transaction parameter be generated and signed by your own server
The server calculates the days
The information is passed into the smart contract in the transaction payload, as a function parameter
The smart contract verifies that the result is honest by checking the signature of the parameter, so that it was your server that made the calculation
However, for better judgement, I kindly ask you to edit your question and add more background information about your business case.
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
add a comment |
Chainlink may be what you’re looking for: https://chain.link
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
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GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Oracle sounds complicated and gas gushing approach.
I suggest this:
A special transaction parameter be generated and signed by your own server
The server calculates the days
The information is passed into the smart contract in the transaction payload, as a function parameter
The smart contract verifies that the result is honest by checking the signature of the parameter, so that it was your server that made the calculation
However, for better judgement, I kindly ask you to edit your question and add more background information about your business case.
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
add a comment |
Oracle sounds complicated and gas gushing approach.
I suggest this:
A special transaction parameter be generated and signed by your own server
The server calculates the days
The information is passed into the smart contract in the transaction payload, as a function parameter
The smart contract verifies that the result is honest by checking the signature of the parameter, so that it was your server that made the calculation
However, for better judgement, I kindly ask you to edit your question and add more background information about your business case.
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
add a comment |
Oracle sounds complicated and gas gushing approach.
I suggest this:
A special transaction parameter be generated and signed by your own server
The server calculates the days
The information is passed into the smart contract in the transaction payload, as a function parameter
The smart contract verifies that the result is honest by checking the signature of the parameter, so that it was your server that made the calculation
However, for better judgement, I kindly ask you to edit your question and add more background information about your business case.
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
Oracle sounds complicated and gas gushing approach.
I suggest this:
A special transaction parameter be generated and signed by your own server
The server calculates the days
The information is passed into the smart contract in the transaction payload, as a function parameter
The smart contract verifies that the result is honest by checking the signature of the parameter, so that it was your server that made the calculation
However, for better judgement, I kindly ask you to edit your question and add more background information about your business case.
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
answered 4 hours ago
Mikko OhtamaaMikko Ohtamaa
7,20231958
7,20231958
add a comment |
add a comment |
Chainlink may be what you’re looking for: https://chain.link
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Chainlink may be what you’re looking for: https://chain.link
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Chainlink may be what you’re looking for: https://chain.link
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Chainlink may be what you’re looking for: https://chain.link
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
answered 58 mins ago
GreenSockMonkeyGreenSockMonkey
111
111
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
GreenSockMonkey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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