Update 0_beacon-chain.md
* Cleanup comments related to custody * Rename "Miscellaneous" to "Custody" in the table of contents * Use `INITIAL_SLOT_NUMBER` instead of `0` for initial custody slots * (typo) Fix `second_latest_custody_reseed_slot` => `penultimate_custody_reseed_slot`
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@ -101,7 +101,7 @@
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- [Attestations](#attestations-1)
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- [Deposits](#deposits-1)
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- [Exits](#exits-1)
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- [Miscellaneous](#miscellaneous)
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- [Custody](#custody)
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- [Per-epoch processing](#per-epoch-processing)
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- [Helpers](#helpers)
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- [Receipt roots](#receipt-roots)
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@ -287,9 +287,9 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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```python
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{
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# Proof-of-custody indices (0 bits)
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# Validator indices with custody bit equal to 0
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'custody_bit_0_indices': ['uint24'],
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# Proof-of-custody indices (1 bits)
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# Validator indices with custody bit equal to 1
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'custody_bit_1_indices': ['uint24'],
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# Attestation data
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'data': AttestationData,
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@ -308,7 +308,7 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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'data': AttestationData,
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# Attester participation bitfield
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'participation_bitfield': 'bytes',
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# Proof of custody bitfield
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# Custody bitfield
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'custody_bitfield': 'bytes',
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# BLS aggregate signature
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'aggregate_signature': ['uint384'],
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@ -344,7 +344,7 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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{
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# Attestation data
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data: AttestationData,
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# Proof of custody bit
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# Custody bit
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custody_bit: bool,
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}
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```
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@ -387,7 +387,7 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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'withdrawal_credentials': 'hash32',
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# Initial RANDAO commitment
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'randao_commitment': 'hash32',
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# Initial proof of custody commitment
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# Initial custody commitment
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'custody_commitment': 'hash32',
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# a BLS signature of this ``DepositInput``
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'proof_of_possession': ['uint384'],
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@ -481,9 +481,7 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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'latest_vdf_outputs': ['hash32'],
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'shard_committees_at_slots': [[ShardCommittee]],
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# Proof of custody
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# Placeholders for now; CustodyChallenge is defined in phase 1, implementers can
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# put a dummy class in for now, as the list will remain empty throughout phase 0
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# Custody challenges
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'custody_challenges': [CustodyChallenge],
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# Finality
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@ -523,10 +521,11 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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'latest_status_change_slot': 'uint64',
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# Exit counter when validator exited (or 0)
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'exit_count': 'uint64',
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# Proof of custody commitment
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# Custody commitment
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'custody_commitment': 'hash32',
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# Slot the proof of custody seed was last changed
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# Slot of latest custody reseed
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'latest_custody_reseed_slot': 'uint64',
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# Slot of second-latest custody reseed
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'penultimate_custody_reseed_slot': 'uint64',
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}
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```
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@ -550,7 +549,7 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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'shard': 'uint64',
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# Validator indices
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'committee': ['uint24'],
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# Total validator count (for proofs of custody)
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# Total validator count (for custody challenges)
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'total_validator_count': 'uint64',
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}
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```
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@ -587,9 +586,9 @@ Unless otherwise indicated, code appearing in `this style` is to be interpreted
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'data': AttestationData,
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# Attester participation bitfield
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'participation_bitfield': 'bytes',
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# Proof of custody bitfield
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# Custody bitfield
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'custody_bitfield': 'bytes',
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# Slot in which it was included
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# Slot the attestation was included
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'slot_included': 'uint64',
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}
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```
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@ -1184,7 +1183,7 @@ def get_initial_beacon_state(initial_validator_deposits: List[Deposit],
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latest_vdf_outputs=[ZERO_HASH for _ in range(LATEST_RANDAO_MIXES_LENGTH // EPOCH_LENGTH)],
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shard_committees_at_slots=[],
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# Proof of custody
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# Custody challenges
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custody_challenges=[],
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# Finality
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@ -1304,8 +1303,8 @@ def process_deposit(state: BeaconState,
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latest_status_change_slot=state.slot,
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exit_count=0,
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custody_commitment=custody_commitment,
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latest_custody_reseed_slot=0,
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second_latest_custody_reseed_slot=0,
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latest_custody_reseed_slot=INITIAL_SLOT_NUMBER,
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penultimate_custody_reseed_slot=INITIAL_SLOT_NUMBER,
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)
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index = min_empty_validator_index(state.validator_registry, state.validator_balances, state.slot)
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@ -1567,7 +1566,7 @@ For each `exit` in `block.body.exits`:
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* Verify that `bls_verify(pubkey=validator.pubkey, message=ZERO_HASH, signature=exit.signature, domain=get_domain(state.fork_data, exit.slot, DOMAIN_EXIT))`.
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* Run `update_validator_status(state, validator_index, new_status=ACTIVE_PENDING_EXIT)`.
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#### Miscellaneous
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#### Custody
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[TO BE REMOVED IN PHASE 1] Verify that `len(block.body.custody_reseeds) == len(block.body.custody_challenges) == len(block.body.custody_responses) == 0`.
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