THIS IS THE GREENBTC (GBTC) REGISTRATION WEBSITE: Register for the 10,000 GBTC token airdrop. Register for the 250 GBTC token package program. Register for the Referral program. Register for the Rewards program. Register for the GREENBTC (GBTC) ‘private sale’ program. You can buy GREENBTC (GBTC) using PayPal/credit card/debit card today. You can also apply for an ECOBIOTOS Community™ (DAO) membership. The GREENBTC (GBTC) token is an ERC20 token listed on the Ethereum blockchain.