The Ethereum Merge, one of the most anticipated upgrades in blockchain history, is set to redefine the network’s consensus mechanism and environmental footprint. As the transition from Proof-of-Work (PoW) to Proof-of-Stake (PoS) nears completion, major crypto exchanges are adjusting their operations to ensure stability and security during the shift. Among them, FTX has announced planned service suspensions across multiple chains in preparation for the merge.
This strategic move underscores the importance of network synchronization during such a critical upgrade. While core trading functions remain unaffected, users must be aware of temporary limitations on deposits and withdrawals—particularly for ETH and ERC-20 tokens across various Layer-2 and cross-chain platforms.
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Understanding the Ethereum Merge Phases
The Ethereum Merge is not a single event but a two-phase process designed to seamlessly integrate the existing Ethereum mainnet with the Beacon Chain, which has been running parallel since December 2021 under the PoS model.
Phase 1: Bellatrix Upgrade – Consensus Layer Activation
The first phase, known as Bellatrix, marks the activation of the consensus layer upgrade on the Beacon Chain. This step was essential to prepare the network for final integration. It officially went live when the Beacon Chain reached Epoch 144896, corresponding to 7:34:47 PM Hong Kong time on September 6, 2022.
At this stage, validators were primed and ready to accept instructions from the execution layer once the second phase commenced. Although no changes were visible to end-users yet, this milestone laid the technical groundwork for the full transition.
Phase 2: Paris Upgrade – Execution Layer Transition
The Paris upgrade represents the actual "Merge" moment—when Ethereum’s execution layer switches off PoW mining and fully adopts PoS validation. This shift is triggered by a specific cryptographic threshold known as Total Terminal Difficulty (TTD), set at 58,750,000,000,000,000,000,000.
According to FTX's estimates, this pivotal event was expected to occur at 2:03:59 PM Hong Kong time on September 15, 2022. From that point forward, Ethereum ceased relying on energy-intensive mining and instead began securing its network through staked ETH.
FTX’s Service Adjustments During the Merge
To maintain platform integrity and prevent transaction failures or asset loss during network instability, FTX implemented a phased suspension of certain services related to ETH transfers across multiple ecosystems.
Scheduled Downtime for Cross-Chain ETH Transfers
Approximately 30 minutes before each phase, FTX paused native ETH and ERC-20 token deposits and withdrawals. Additionally, it scheduled targeted halts for ETH bridged via different networks:
- Arbitrum One ETH: Suspended at UTC 00:00 on September 7, 2022 (8:00 AM Hong Kong time)
- Solana (Wormhole) ETH: Suspended at UTC 00:00 on September 15, 2022 (8:00 AM Hong Kong time)
- Binance Smart Chain (BSC) ETH: Also suspended at UTC 00:00 on September 15, 2022 (8:00 AM Hong Kong time)
These measures were precautionary, ensuring that no cross-chain transactions would be left in limbo during consensus transitions. Users were advised to complete any necessary transfers ahead of these deadlines.
Trading Services Remain Unaffected
Importantly, spot trading, leveraged spot trading, and futures trading for ETH and ERC-20 tokens continued without interruption. This ensured market liquidity remained stable even as backend operations adjusted to blockchain-level changes.
Handling Potential ETH Forks Post-Merge
One of the key concerns surrounding the Merge was the possibility of a Proof-of-Work (PoW) fork of Ethereum. While the official Ethereum community endorsed the PoS chain, some miners chose to continue supporting a PoW version, potentially creating a new token.
FTX’s Fork Policy
FTX clarified its approach in advance:
- The ETH ticker symbol would represent the PoS chain, aligning with the majority of developers and stakeholders.
- In the event of a PoW fork, FTX reserved the right to distribute forked tokens directly into user accounts based on snapshot balances taken prior to the Paris upgrade.
- Users who had borrowed ETH would also be liable for repayment in the PoW forked token if distributed, proportional to their balance at snapshot time.
This policy aimed to protect user interests while maintaining operational flexibility. However, FTX emphasized that it retained full discretion to modify how any PoW fork would be handled—including whether to list it at all.
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Frequently Asked Questions (FAQ)
Q: Why did FTX suspend ETH deposits and withdrawals before the Merge?
A: To prevent transaction failures or lost funds due to network instability during the consensus switch. This is a standard precaution taken by most major exchanges.
Q: Was regular ETH trading affected during the Merge?
A: No. Spot trading, leveraged trading, and futures markets for ETH and ERC-20 tokens remained fully operational throughout the transition.
Q: What happened to users holding ETH during a potential PoW fork?
A: If a PoW fork occurred, FTX distributed forked tokens based on pre-Merge snapshots. Borrowers were also required to repay in both PoS and PoW versions if applicable.
Q: How was the Merge’s timing determined?
A: Unlike scheduled calendar events, the Merge was triggered by reaching a specific Total Terminal Difficulty (TTD) threshold—ensuring decentralization and security.
Q: Is the Ethereum Merge complete now?
A: Yes. The Merge successfully completed in September 2022, marking Ethereum’s transition to a more energy-efficient Proof-of-Stake model.
Q: Will there be another major Ethereum upgrade after the Merge?
A: Yes. The Merge was just one part of Ethereum’s broader scalability roadmap, followed by upgrades like Shanghai and future rollouts focused on sharding and Layer-2 scaling.
Final Thoughts and User Recommendations
The Ethereum Merge represented a historic turning point—not just for Ethereum but for the entire blockchain ecosystem. By reducing energy consumption by an estimated 99.95%, it addressed long-standing criticisms about crypto’s environmental impact.
For users, staying informed about exchange policies, network timelines, and potential forks was crucial. Proactive wallet management, timely transfers, and understanding borrowing implications helped avoid confusion during this dynamic period.
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