mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Aaron Bassett
a59ea80cec
* Change node-template license from Unlicense to MIT-0 * Change frame examples license from Unlicense to MIT-0 * Update bin/node-template/LICENSE --------- Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Co-authored-by: parity-processbot <>
30 lines
1.2 KiB
Markdown
30 lines
1.2 KiB
Markdown
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# Offchain Worker Example Pallet
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The Offchain Worker Example: A simple pallet demonstrating
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concepts, APIs and structures common to most offchain workers.
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Run `cargo doc --package pallet-example-offchain-worker --open` to view this module's
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documentation.
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- [`pallet_example_offchain_worker::Trait`](./trait.Trait.html)
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- [`Call`](./enum.Call.html)
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- [`Module`](./struct.Module.html)
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**This pallet serves as an example showcasing Substrate off-chain worker and is not meant to be
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used in production.**
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## Overview
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In this example we are going to build a very simplistic, naive and definitely NOT
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production-ready oracle for BTC/USD price.
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Offchain Worker (OCW) will be triggered after every block, fetch the current price
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and prepare either signed or unsigned transaction to feed the result back on chain.
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The on-chain logic will simply aggregate the results and store last `64` values to compute
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the average price.
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Additional logic in OCW is put in place to prevent spamming the network with both signed
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and unsigned transactions, and custom `UnsignedValidator` makes sure that there is only
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one unsigned transaction floating in the network.
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License: MIT-0
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