Like bitcoin, ether is a digital bearer asset (similar to a security, like a bond, issued in physical form). Just like cash, it doesn't require a third party to process or approve a transaction.
Ethereum is the network—the blockchain. Ether (ETH) is the fuel for that network. When you send tokens, interact with a contract, send ETH, or do anything else on the blockchain, you must pay for that computation. That payment is calculated in Gas and gas is paid in ETH.
You are paying for the computation, regardless of whether your transaction succeeds or fails. Even if it fails, the miners must validate and execute your transaction (compute) and therefore you must pay for that computation just like you would pay for a successful transaction.
You can see your TX fee (gas limit * gas price) in ETH & USD when you search for your transaction on https://coinkeeper.io/wallet/transactions. This is not a TX fee that Coinkeeper, or any other service provider, receives. This fee is paid to miners for mining transactions, putting them into blocks, and securing the blockchain.
Coinkeeper is a decentralized secure service for storing and transferring Ethereum cryptocurrency. All you need to do to get started with this platform is register a wallet at https://coinkeeper.io, and you’ll get all the necessary tools for online transfers of ether digital currency.
The team of Coinkeeper developers will connect an API payment solution for automatically accepting and paying ether coins to the service in the near future. Coinkeeper API is a financial instrument for cryptocurrency enthusiasts who own a business or a website and desire to accept payments in Ethereum.
The API functionality is currently in testing. Coinkeeper Wallet customers will be notified when our team has perfected the API.
Here is a list of reputable services you can use the following services to buy and sell ETH / Tokens / fiat (USD, EUR, etc.). There are many, many more out there but these are the ones I am familar with.
Best of luck!
Coinkeeper provides a reliable package of services for ensuring the safety of your wallet and coins, which includes data encryption, as well as two-factor authentication. Two-factor authentication is enabled by default when users log in to the wallet and when funds are transferred to any other address in the Ethereum network.
A backup phrase (or mnemocode) is required to restore your Coinkeeper wallet in case you lose your credentials. You can set up a phrase in the "Security" menu. Write the code down in hard copy and do not pass the phrase to third parties in any case.
In your account, click the menu option "Security." Install the Google Authenticator app on your smartphone, and scan the QR code with the app. Enter the code into the field and press "Confirm." Choose what actions are to be authenticated via Google Authenticator under what conditions, and you’ve taken the security of your business into your own hands and are done with configuring the security of your ether wallet.
If you forget your password, click "Forgot password," then enter the e-mail address you used when registering. A link to reset your password will be sent to that e-mail address. Follow the link and create a new password.
To send ether, you will complete the following steps:
1. Go to your personal account and click "Send ether"
2. Select the ether wallet you want to use
3. Enter the ether address for the recipient
4. Enter the amount to be sent
5. Set the fee and send the funds
To receive ether payments, you will complete the following steps:
1. Go to your personal account and click "Receive ether"
2. Select the ether wallet you will use to receive the payment
3. Provide the wallet address or QR code to the person who is sending the ether to you
Coinkeeper users can set fee amounts manually. Since the fee can be changed, the user has a unique level of control and influences the speed of transactions.
Coinkeeper users do not pay any fee for receiving ether.
The received funds appear as part of your available balance after receiving confirmation in the Ethereum network.