Introduction

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Making sense of the API input

The standard form of the Rated API looks something like this:

At the highest level, here’s how you should interpret the class of instructions you are passing to it:

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How time works

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For Ethereum

All rewards and performance metrics are hosted under the “effectiveness” endpoint.

By default, the API returns data in daily chunks (24h / 225 epoch / 7200 slot increments), starting from Beacon Chain genesis. As such, Day 0 encompasses the 225 epoch period between epochs [0, 225), and maps to datetime 2020-12-01 12:00:23 UTC to 2022-12-02 12:00:11 UTC. The reasoning for this is to make sure that days are always equal in terms of included epochs (i.e. guaranteed to have 225 epochs each).

That being said, for performance and rewards v1 endpoints, we have enabled a utc parameter which users the option retrieve data based on UTC time. The epochs are partitioned into days based on the starting timestamp of an epoch (i.e. timestamp of the first slot in an epoch). This means epochs belong to the (UTC) day they were started in. The rewards partitioned this way instead of at the slot-level, as doing so by the latter would make accounting around midnight quite complicated (especially attestation rewards where the rewarded action and the actual reward have a time lag). Thus, validator activity that occurs between 23:57 and 00:03 will be accounted for in the previous day. This way all days will have 225 epochs as with the default timing.

As an example for Ethereum mainnet:

Day 0 would be from:

• Slot 0 to 3615

• Epoch 0 to 112

• Time period: 2020-12-01 12:00:23 (genesis) to 2020-12-02 00:03:23 UTC

Day 1 would be from:

• Slot 3616 to 10815

• Epoch 113 to 337

• Time period: 2020-12-02 00:03:35 to 2020-12-03 00:03:23 UTC

• Epoch 337 started on 2020-12-02 23:57:11 UTC so despite ending on 2020-12-03 00:03:23 UTC, it still counted under Day 1 (which is 2020-12-02).

Subsequent days would follow the same pattern as Day 1. Excluding Day 0, there will always be 7200 slots and 225 epochs in a day.

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For Solana

The “rewards” and “performance” endpoints, which contains validator rewards and performance data respectively, returns data in daily chunks, indexed on UTC days, epochs, or 20 minute intervals.

The “latency” endpoint, which mainly contains data on validator voting latency, returns real-time data over the last 20 minutes.

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Entity granularity

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For Ethereum

The Rated API supports querying for rewards, performance and metadata at the validator pubkey level, all the way up to a pre-configured operator (list of pubkeys) or pool (list of operators).

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Time window aggregation

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For Ethereum

The Rated API also supports aggregation, so days can be rolled up in weeks, months, quarters, years and even all time on Ethereum.

To use this feature, the granularity query parameter can be used. For example, to obtain monthly aggregates for validator index 100 on Ethereum:

curl -X 'GET' \\   
	'[<https://api.rated.network/v0/eth/validators/100/effectiveness?size=10&granularity=month&filterType=day>]' \\
   -H 'accept: application/json' \\
   -H 'X-Rated-Network: mainnet'