Greenaddress vs blockchain explorer
As noted, 2of3 accounts can be used to avoid requiring authentication also. These future mitigations require careful design and development to ensure that they cannot be exploited by attackers. It may be some time before we can safely implement them. Our two-factor authentication system is a security measure that we include to ensure that even if a malicious party steals your mnemonics, they cannot access your wallet and steal your funds.
We do not do this, because if we did so, it would compromise all the security offered by 2FA in the first place. Any malicious party could steal your mnemonics, and then contact us asking us to reset the 2FA, and then they could access your funds. As such, we strongly urge users to set up at least 2 different 2FA methods. SMS delivery is not perfect and sometimes there can be delays or failures. Some countries can be more affected than others depending on factors like the reliability of the underlying mobile infrastructure.
You should always have at least two two-factor methods enabled to maintain access to your coins. Email delivery is not guaranteed and sometimes there can be delays or a failure in delivery. It is also possibly for anti-spam systems to mistakenly classify two-factor emails as spam or strip the attachments from them.
Please ensure you check your spam folders and give the email time to arrive. If you regularly have issues receiving email you may wish to adjust your spam settings, whitelist the sender in your client, or move to a more configurable provider.
GreenAddress is designed to allow you to recover your coins if the service ceases to be available. GreenAddress does not currently charge fees for any of its services. If we add a fee for any service in the future, this will be clearly communicated and opt-in. Enterprise clients and those seeking custom solutions are welcome to contact us to discuss arrangements for extra services and support. The fee you see in the sending transaction dialog is paid to Bitcoin miners to confirm your transaction i.
Transactions fees change according to demand on the Bitcoin network. Miners may ignore or delay transactions with extremely low fees. GreenAddress automatically calculates a fee that aims for your transaction to be mined quickly. We do not aim for the absolute fastest possible confirmation time since doing so may be very expensive. Most of our wallet clients allow you to change the fee. This can be useful if you want to ensure a transaction confirms even more quickly by increasing the default fee , or to lower the fee if you do not care how long the transaction takes to confirm.
Unless you are experienced in using Bitcoin, we suggest you use the default fee calculated for you by the wallet. All GreenAddress wallets provide a confirmation dialog with fee information and a payment is generally denied if the amount is below what the network will accept. When you send a transaction a fee is included as a reward to the miner that mines the transaction into a block see above.
If the fee is set too low the transaction can become stuck because the incentive is not sufficient for a miner to mine it. In this case it is possible to replace the transaction with one with a higher fee. This is called "bump fee" in the client, and is also known as "replace-by-fee" or "RBF". We have two Android applications, a native application and a Cordova application.
Our iOS application is available from the iTunes Store. A Chrome packaged application is available from the Chrome Web Store.
All of our applications are open source and you can contribute to their development on GitHub. If you are building a service that will use GreenAddress, we suggest you get in touch to discuss your requirements and ensure your use of the service will be secure.
You can try our testnet version at test. A testnet faucet to receive coins for testing is available at tpfaucet. Please remember to send any testnet coins back to the faucet when you are done testing.
We also have a bleeding edge regtest environment and faucet available at regtestwss. This environment is updated regularly and may be restarted without notice. We value your feedback and suggestions. Please feel free to raise issues on GitHub or email us at info greenaddress. We have a long list of planned features and languages that we wish to support.
You can check the existing issues on GitHub for details. If you would like to help with translation please see here. Cookies are unique identifiers that we use to enable our services to recognize your device and provide features such as remembering your language preference and security for some common web issues.
We ask you to accept the use of our cookie in accordance with EU law. How can I contact you? What is your support policy? What features does GreenAddress offer? For a simple high level comparison with similar services please see here. We aim to provide a convenient-to-access wallet that emphasizes security and privacy: Convenience Easy access from anywhere All access controlled by a single user mnemonic phrase A simple interface with up to date fiat price conversion Fast PIN login Watch-only logins for quick balance and transaction checking Instant transaction support Easy key sweeping to import coins Sub-accounts for 2of2 and 2of3 signature transactions Security Multiple two-factor authentication options GreenAddress signature required to move coins Transaction limits and restrictions Hardware wallet support Recovery "nLocktime" transactions 2of3 accounts for user controlled backup keys Privacy User secrets are never transmitted to our servers User secrets are never stored unencrypted on your device Minimal information is stored by the service Optional PGP encryption for user emails What are "2of2" and "2of3" accounts?
What are "instant transactions"? Why am I am being asked to redeposit my funds? Why am I charged a fee to redeposit my 2of2 funds? How can I avoid these 2of2 redeposit fees? Is there any other way of limiting the fees I pay for 2of2 redeposits?
What happens if I do not redeposit my 2of2 funds? The main consequences of not redepositing are: Is it possible to sign arbitrary messages to prove ownership of GreenAddress 2of2 accounts? Do you support Tor? Do you have an Onion site? What currency exchange sources do you support? Can I sweep private keys into my wallet? From the Receive Money tab in our wallet applications, enter your private key and the coins will be swept into your wallet.
I don't see an expected incoming transaction in my wallet! What are the service limits? Can I use it as much as I want? Why does my receiving address change all the time? Can I reuse an old address? Where can I find my old addresses? Feel free to use one of the buttons below on your website: Security Where are my Bitcoin keys stored? Your mnemonics are encrypted and stored locally only when PIN login is enabled See below. How does using a PIN work securely? We suggest using a long PIN for better security.
I lost my PIN, help! Future developments in two-factor processing will be notified in our applications and this FAQ. I didn't receive a two-factor authentication SMS, what's going on? I didn't receive a two-factor authentication email, what happened? What happens if your service goes away?
Will I lose my coins? Fees What does GreenAddress charge for the service? I see there is a fee in transactions, who is the recipient? Why do I have to pay? This is variable and depends on Bitcoin network conditions. See also Opt-in RBF. Development What platforms are supported? The production web wallet service can be used from any modern web browser.
Do you have an API available for developers? For security reasons, you should always use 2FA and the browser extension or Android App.
Mycelium Bitcoin Wallet is an open source wallet for Android designed for security, speed, and ease of use. It has unique features to manage your keys and for cold storage that help you secure your bitcoins. It stores an encrypted version of your wallet online but decryption happens in your browser.
For security reasons, you should always use the browser extension and email backups and keep that email secure. Bitcoin Core is a full Bitcoin client and builds the backbone of the network.
It offers the highest levels of security, privacy, and stability. However, it has fewer features and it takes a lot of space and memory. It uses remote servers that handle the most complicated parts of the Bitcoin system, and it allows you to recover your wallet from a secret phrase. MultiBit is a lightweight client that focuses on being fast and easy to use.
It synchronizes with the network and is ready to use in minutes. MultiBit also supports many languages. It is a good choice for non-technical users. Armory is an advanced Bitcoin client that expands its features for Bitcoin power users.
It offers many backup and encryption features, and it allows secure cold-storage on offline computers. With a focus on usability, Hive is translated into many languages and has apps, making it easy to interact with your favorite Bitcoin services and merchants.
BitGo is a multi-signature wallet offering the highest levels of security. Every transaction requires two signatures, protecting your bitcoins from malware and server attacks.
Private keys are held by the user such that BitGo cannot access the bitcoins. It is a good choice for non technical users.