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Blocktrail does not charge any fees to use the wallet and the app is always free to download. Your transactions will need to include network mining fees to the Bitcoin network for your transaction to confirm. You are able to directly send BTC to the contacts on your mobile device if they are also a Blocktrail wallet user. You just select a contact from your phone's address book, enter an amount, and click send. Using HD technology we find a wallet associated with your friend's phone number and create a new bitcoin address for you to send to.
If your contact is not a user we give you the option to send an SMS inviting them to join. Yes we have a complete Developers Platform. Please go to https: You can use your wallet at any location or website that accepts bitcoin. You can also use it to send and receive bitcoin with other bitcoin users and services. You can send bitcoin by clicking the send button on the website or in the app. You can send to an address, QR code or contact.
You can receive bitcoin by clicking the receive button on the website or in the app. An address and QR code will be generated. You can copy, email or SMS this information to the relevant party. You can also request a payment to be made in the app. This feature is currently in development and we be offered shortly to our users. Yes, you are the owner of your private keys.
Blocktrail never has access to your bitcoins, ever. And since we never have access to your private keys we further protect your bitcoins. Transactions from your Blocktrail wallet are co-signed both by you on your device, and by BlockTrail.
When you enable two-factor authentication, BlockTrail only signs transactions which you have authenticated on your secondary device. Using multi-signature transactions and multi-device authentication allows Blocktrail to provide you with the highest level of security for your Bitcoin. Blocktrail wallets are Hierarchical Deterministic HD by default. This enables you to generate an unlimited amount of Bitcoin addresses, without ever having to create a new backup.
Using Blocktrail's backup recovery document you are able to both restore bitcoins stored on the wallet, as well as regenerate all addresses associated with it. If Blocktrail is ever unavailable you are always able to restore your wallet using the Blocktrail backup recovery document. This document is not specific to Blocktrail, and can work with Bitcoin-core directly. When you create your wallet for the first time you will be prompted to download a backup recovery document.
This document is your master backup and will be able to restore your wallet as well as any addresses associated with it. This document allows direct access to your wallet and should be kept confidential and stored securely offline. When enabled, two factor authentication will require you to authorize your login attempts and transactions using more than one device.
Yes, Blocktrail wallet is available on both iOS and Android. Frequently Asked Questions Are there any fees to use the wallet? How do I send bitcoin directly to my contacts? Do you have a developers API? Where can I use my wallet? How do I send bitcoin? How do I receive Bitcoin? Can I buy or sell Bitcoin through the BlockTrail wallet?
This feature is currently in development and we be offered shortly to our users Do I retain ownership of my private keys? What type of security does a Blocktrail wallet provide? How does Blocktrail use multi-signature? How does Blocktrail use HD wallet technology?
What happens to my bitcoin if BlockTrail service is not available? How do I backup my wallet? What is two-factor authentication? Is Blocktrail available on mobile?