Looking at both accounts on Coinbase and Binance, the prices of the BTC and other coins are different. If the value of BTC is universal, why does Binance list BTC's price at $14,691 while Coinbase has BTC listed at $15,801.98?
Here are the charts.
Binance:
Coinbase:
I do see a possible difference into the actual value of the US dollar between Coinbase and Binance. Coinbase has, what I assume, a US Dollar wallet with true USD value. This wallet can be used to purchase other altcoins on its platform immediately without withdrawing from an actual debit card or checking account. Binance, however, has the USDT or US Dollar Tether.
According to the Binance Support page at https://support.binance.com/hc/en-us/articles/115001093991-Tether-USD-USDT- , "Tethers hold their value at 1:1 to the underlying assets." and based on this tether, the underlying asset is the US Dollar.
So why the difference in BTC value at around the same time? Especially a $1000 difference in value between the two online altcoin platforms.