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Update EIP-7514: Update eip-7514.md
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dapplion authored Sep 14, 2023
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Expand Up @@ -32,7 +32,7 @@ This EIP does not attempt to do this, but to allow more time for the community t

| Name | Value |
| ---- | ----- |
| `MAX_PER_EPOCH_CHURN_LIMIT` | 12 |
| `MAX_PER_EPOCH_CHURN_LIMIT` | 8 |

### Execution layer

Expand All @@ -42,6 +42,8 @@ This requires no changes to the Execution Layer.

- Modify `get_validator_churn_limit` function adding an upper bound `MAX_PER_EPOCH_CHURN_LIMIT`

The full specification of the proposed change can be found in [`/_features/eip7514/beacon-chain.md`](https://github.com/ethereum/consensus-specs/blob/a56c4d026ff4fd39cbd77b7b8545eae719613018/specs/_features/eip7514/beacon_chain.md).

## Rationale

### `MAX_PER_EPOCH_CHURN_LIMIT` value
Expand Down Expand Up @@ -70,29 +72,7 @@ Depending on the specific constant selection the churn can _decrease_ at the act
| 6 | Dec 01, 2024 | Oct 26, 2026 | Sep 20, 2028 |
| 4 | Apr 02, 2025 | Feb 07, 2028 | Dec 15, 2030 |

#### `MAX_PER_EPOCH_CHURN_LIMIT` activation date: Jul 01, 2024

| Max Churn Limit | 50% ETH staked | 75% ETH staked | 100% ETH staked |
|------------------:|:-----------------|:-----------------|:------------------|
| inf | reached | Sep 25, 2024 | Dec 18, 2024 |
| 16 | reached | Jan 14, 2025 | Oct 02, 2025 |
| 12 | reached | Mar 21, 2025 | Mar 04, 2026 |
| 8 | reached | Jul 31, 2025 | Jan 03, 2027 |
| 6 | reached | Dec 10, 2025 | Nov 05, 2027 |
| 4 | reached | Aug 31, 2026 | Jul 08, 2029 |

#### `MAX_PER_EPOCH_CHURN_LIMIT` activation date: Oct 01, 2024

| Max Churn Limit | 50% ETH staked | 75% ETH staked | 100% ETH staked |
|------------------:|:-----------------|:-----------------|:------------------|
| inf | reached | reached | Dec 18, 2024 |
| 16 | reached | reached | Jun 03, 2025 |
| 12 | reached | reached | Aug 23, 2025 |
| 8 | reached | reached | Feb 03, 2026 |
| 6 | reached | reached | Jul 16, 2026 |
| 4 | reached | reached | Jun 08, 2027 |

Assuming that the earliest the next fork can happen is at the start of 2024 Q3, a value of 12 provides a significant reduction in projected size without causing a big drop in churn at a projected Dencun fork date.
Assuming that the earliest the next fork can happen is at the start of 2024 Q3, a value of 8 provides a significant reduction in projected size without causing a big drop in churn at a projected Dencun fork date. A value of 8 prevents reaching a level of 50% ETH staked for at least 1 full year even with a delayed dencun fork.

## Backwards Compatibility

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