BTC Spot      $ 8847.05
ETH Spot      $ 201.88
ETH/BTC= 0.0228
  Base= 0.0176
GBTC  =   BTC 0.00096186   (May 21, 2020)
GOLD $25.53             PAAS $27.085
Data provided by IEX Cloud
Actual Value GBTC = $8.51
Premiums:   10% = $9.36     25% = $10.64