Why have you used Bitcoin for Bottle Pay and not other 'cryptos' like Ethereum and Ripple?
Bitcoin is the most established and secure blockchain in existence. It operates independently of borders, trust and politics, and represents a truly open, peer to peer system of transferring value. Bitcoin was the first blockchain and cryptocurrency and is, in our opinion, still the best.
We believe that no other cryptocurrency project instills the same level of trust and authority as Bitcoin, which is why we are building our products on the Lightning Network, which is itself a Layer 2 technology being built on top of the Bitcoin blockchain.
Having said this, remember that the Lightning Network is itself still in Beta, so we advise not keeping more than you would be willing to lose in any wallet on the Lightning Wallet, including Bottle Pay.