The November 16th BCH fork created two separate chains: BCH and BCHSV. This guide explores proven wallet solutions to protect your assets during this transitional period.
Understanding the Fork Risks
- Both chains currently lack replay protection
- Transactions on one chain can be replayed on the other
- Exchanges/wallets have temporarily suspended deposits/withdrawals
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Community-Approved Solutions
1. Input Contamination Method
How it works:
- Uses UTXOs from illegal transactions (legal on one chain, illegal on the other)
- Contaminated transactions become chain-specific
- Requires access to post-fork coinbase transaction UTXOs
Implementation:
- Divide coinbase outputs into small denominations
- Use these as inputs for withdrawal transactions
- Transactions become immune to replay attacks
2. Unique Opcode Transactions
Chain-specific differences:
- Construct transactions using opcodes valid on one chain but invalid on the other
- BCH: Use OP_CHECKDATASIG
- BCHSV: Use OP_MUL
Best Practices
- Higher confirmation counts for deposits/withdrawals
- Wait for stability if you're an average user
- Monitor chain activity for potential attacks
Recommended Solution
The input contamination method currently offers the most reliable protection, though it requires technical implementation resources.
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FAQ
Q: Should I move my BCH immediately?
A: No. Wait until exchanges implement proper security measures.
Q: How long will deposit/withdrawal suspensions last?
A: Until exchanges develop reliable replay protection solutions.
Q: Can I lose funds during the fork?
A: Only if you transact without proper protection measures.
Q: Are my existing BCH funds safe?
A: Yes, but don't transact until proper safeguards are in place.
Q: Which solution do exchanges recommend?
A: Most are implementing input contamination methods.
Q: When will normal operations resume?
A: Expect gradual reopening as security measures are implemented.