Author Topic: How is the asset exchange rate computed from the blockchain operation?  (Read 125 times)

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Offline FrankBlabu

Hi,

I would like to learn more about the technology bitshares is based on. For that purpose I am using pybitshares to list the raw operations in the blockchain. Now I wonder how the current (settlement) exchange rate is computed using these operations?

From time to time, an asset feed operation arrives. But this seems not to happen frequent enough to get a settlement exchange rate for every major asset daily or even more frequently. So I assume it is computed from the limit order creates and cancels instead. But how?

Is there documentation about this? Or even a link to a source file implementing the basic algorithm?

Thank you in advance!

Offline abit

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I'm not sure whether your definition of "settlement" and the word used in the system are the same.

Code about order matching:
https://github.com/bitshares/bitshares-core/blob/test-2.0.180525/libraries/chain/db_market.cpp#L380

Code about price feed:
https://github.com/bitshares/bitshares-core/blob/test-2.0.180525/libraries/chain/asset_evaluator.cpp#L931
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Offline FrankBlabu

Yes, great and well documented ! This helps me a lot in understanding the technical background. Thank you very much !