will pay 2 BTC for 1 BTC with traces of that pizza on it

[GimEEE]

This is why we need clients to have address differentiation.
As it is, the client gives no option for spending specific coins, so if 1BTC is from pizza history and 199 are from other history, it will be difficult to pick the correct one.
Of course merging all 200 to one address could work, but then it gets watered down. . .

Client should give option of which received address BTC to send. . .

[1714499531]

1714499531

[1714499531]

1714499531

[Binford 6100]

you have a handful of options
- new wallet for new incomming coin to your collection
- wallet for the whole collection but you shall not spend from it & new address for new payment is a must
- keep accepting them as usual, spend them when the time will come

if you're skilled enough (and a collector), you can remove the private key of the address with the valuable coin
and -rescan to update the balance of your account. this is actually the bitcoin, the key to it is everything.
this way you should be safe not to spend it by chance (the client would not have the signing authority over the bitcoins)

[davout]

https://github.com/bitcoin/bitcoin/issues/305