Ethereum heartbeat - #2027
Ethereum heartbeat#2027gordsport wants to merge 3 commits into
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| For the Ethereum Heartbeat, we use the network parameter `ethereum_heartbeat_period`. This parameter should be either 0 or a value bigger than the number of validators; the recommended initial value is 128, which would create a hearbeat per validator about every 20 minutes (i.e., about 120 heartbeats per validator per epoch). Legal values are all integers larger or equal to 0. | ||
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| For every Ethereum block, if the hash of this block mod `ethereum_heartbeat_period` equals the identity of the a validator (taken mod ethereum_heartbeat_period)+1, then this validator has to forward this as an Ethereum event. This event is confirmed by other validators just like any other Ethereum event, but then ignored. If that block also contains a valid Vega event that requires an action, this is forwarded independently by the normal event forwarding mechanisms. The heartbeat also does contain the Ethereum hash of the corresponding block. |
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What exactly do you mean by identity of the validator here?
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It's the number of the validator in our validator list (i.e., something between 1 and <number_of_validators>)
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@Vegaklaus - please can you update the spec to clarify this
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| If a validator forwards a heartbeat, all other validators have to validate its correctness by checking if the hashes work out. | ||
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| #### Ethereum Read Access Heartbeat |
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Just to clarify, what is the purpose of having both Ethereum Heartbeat and Ethereum Read Access Heartbeat?
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Ethereum heartbeat measures if you follow the Ethereum chain to spot events happening there that need forwarding (e.g., deposits on the bridge). Read access means you have access to the Ethereum state, so you can get oracle readings and such.
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So do we expect the listen for events for the first mechanism and pull for the other?
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Copied from #2026 with the base as the
palazzobranch.close #1993 .