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I keep most of them on a hardwallet locked in safe. Some on online wallets where I hold the keys.
The notion having to place a single satoshi (for a BCH)where it is vulnerable to seizure is abhorent to entire concept of bitcoin and the entire blockchain crypto currency world.
The FBI could walk into Coinbase and close it all down 5 minutes from now, for whatever reason they choose!

You can split your coins and have both BCH and BTC. Google it :)

interesting, thanks for the tip. Seems a bit complicated and I wasn't using a desktop wallet but an android one and now most is tucked away on a hardwallet, some spread about on three other wallet and a tiny bit on two exchanges.
but I reckon every bitcoin I owned prior to August 1, has a record of being owned by me.
The detective work seems daunting.