At what point is taken into account buying ICO?
4 stages:
1 wallet BTC -> wallet BTC(BRO) (Unconfirmed)
2 wallet BTC(BRO) (Confirmed)
3 wallet BTC(BRO) (Confirmed) -> 33Bghpzm***************f6dnSjbGc6Sf (Unconfirmed)
4 33Bghpzm***************f6dnSjbGc6Sf (Confirmed)
To answer your question:
The block number of confirmed transaction in #4 is used to determine price window. however, if there was a problem where funds got in stuck in wallet BTC(BRO), we can look at the block number of #2, and see if it made the deadline.
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