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-# Phase 0 -- Honest Validator
-
-This is an accompanying document to [Phase 0 -- The Beacon Chain](./beacon-chain.md), which describes the expected actions of a "validator" participating in the Ethereum proof-of-stake protocol.
-
-## Table of contents
-
-<!-- TOC -->
-<!-- START doctoc generated TOC please keep comment here to allow auto update -->
-<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
-
-- [Introduction](#introduction)
-- [Beacon chain responsibilities](#beacon-chain-responsibilities)
-  - [Attestation aggregation](#attestation-aggregation)
-    - [Aggregation selection](#aggregation-selection)
-
-<!-- END doctoc generated TOC please keep comment here to allow auto update -->
-<!-- /TOC -->
-
-## Introduction
-
-This document represents the changes to be made in the code of an "honest validator" to implement Deneb.
-
-## Beacon chain responsibilities
-
-### Attestation aggregation
-
-#### Aggregation selection
-
-Aggregator selection is now balance based. `state` is the `BeaconState` at the previous epoch of `slot` to allow lookahead.
-
-```python
-def is_aggregator(state: BeaconState, slot: Slot, index: CommitteeIndex,
-                  slot_signature: BLSSignature, validator: ValidatorIndex) -> bool:
-    committee = get_beacon_committee(state, slot, index)
-    committee_balance = get_total_balance(state, set(committee))
-    balance = state.balances[validator]
-    modulo = max(1, committee_balance // balance // TARGET_AGGREGATORS_PER_COMMITTEE)
-    return bytes_to_uint64(hash(slot_signature)[0:8]) % modulo == 0
-```
-