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Shawn Tabrizi
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* fix trigger fingers * more * Update frame/example-offchain-worker/README.md Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com> Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com> Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>
28 lines
1.1 KiB
Markdown
28 lines
1.1 KiB
Markdown
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# Offchain Worker Example Module
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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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## 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: Unlicense
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