Quote from: henkcryptotank on May 31, 2017, 11:40:41 AM

From the whitepaper:

Maximum financing: 181,818.2 ETH -this may change with exchange rates.
Minimum financing: 45,454.6 ETH -this may also change with exchange rates.
Exchange rate: 1 ETH = 5,500 Basic Attention Tokens (BAT) -this may change
with ETH exchange rates.

Greets, Hank

This was updated in the blog post posted on May 29: https://basicattentiontoken.org/bat-smart-contract-deployed/

We are pleased to announce that the BAT smart contract is available on the Ethereum mainnet.
The sale of BAT will begin at the time that mining commences on Ethereum block 3,798,640 and continue until the time that 156,250 Ether has been received or mining commences on Ethereum block 3,963,480, whichever is earlier. This is the sale period.
Based on current Ethereum block mining times, we estimate that Ethereum block 3,798,640 will be mined on or about 8:00 am PDT on May 31, 2017, and that Ethereum block 3,963,480 will be mined on or about 30 days thereafter. For the avoidance of doubt, these estimates are provided for informational purposes only, and the sale period will commence and conclude strictly according to the block based definition above.
Token sale address: (please agree to our Terms and Conditions to receive the token sale address.)
Ethereum Start Block Number:3,798,640 (Do not send before the start block.)
Transaction data fields must read: 0xb4427263
The exchange rate is 1 ETH to 6,400 BAT.
Detailed instructions on how to participate are available in this blog post here. Instructions on different wallets can be found here: myetherwallet and mist.
By participating in this token sale, you agree to the Terms and Conditions.