Top Of The Coins

Hey PH, I wanted to learn more about crypto and the Coinbase API, so I just started building and ended up with this. It's all just a bit of fun. Most of the transactions you see on there at the moment are clearly test transactions created by me (using actual Ether transfers). I couldn't get the Coinbase webhook to work properly for a couple of days, but then it worked for every previous transaction, and what you see on the site was the result (every test transaction being published!) 👊 The main thing I learned from building this is that Bitcoin has high transaction fees. Initially I was going to make this for Bitcoin, not Ether, but every Bitcoin transaction at the moment basically costs around $10 to be done in any reasonable timeframe. Ethereum is around $0.30. My experience is limited to Coinbase in this regard, so feel free to correct me. Another huge challenge was the fact that Coinbase doesn't have a sandbox to test transactions. This caused a headache for me because you can't transfer from your own address to your own address - I had to use a familymember's Coinbase account (which triggered 2FA every time I wanted to develop this!). Another big challenge was getting the webhook working - the only way to truly test is in live, which obviously isn't ideal. What could I add to this to make it a killer side project?! Any suggestions? Thanks, Joe

Hey! Nice work but wonder why this has that much upvote... It actually did not use Ethereum's smart contract or having anything decentralized. Just using coinbase API: you could have done the same thing with Paypal or Stripe? (an would have been able to debug correctly)