Show the crate…
1 stable release
2.0.1 | Apr 4, 2021 |
---|
#142 in #tetcoin
1MB
24K
SLoC
Offchain Worker Example Module
The Offchain Worker Example: A simple noble demonstrating concepts, APIs and structures common to most offchain workers.
Run cargo doc --package noble-example-offchain-worker --open
to view this module's
documentation.
Overview
In this example we are going to build a very simplistic, naive and definitely NOT
production-ready oracle for BTC/USD price.
Offchain Worker (OCW) will be triggered after every block, fetch the current price
and prepare either signed or unsigned transaction to feed the result back on chain.
The on-chain logic will simply aggregate the results and store last 64
values to compute
the average price.
Additional logic in OCW is put in place to prevent spamming the network with both signed
and unsigned transactions, and custom UnsignedValidator
makes sure that there is only
one unsigned transaction floating in the network.
License: Unlicense
Dependencies
~4–11MB
~137K SLoC