Features

You can manage your Ethereum Wallets, check the balances, transfer Ether and much more. Even though loaded from the internet, it behaves like a fully functional local wallet application.

Buy and sell Ether without registration. Use QR-Code to pay or receive Ether.

Principals of this Wallet Application

Pacta.Cash is a free and secure Ethereum Wallet application that runs entirely within your browser. It was developed with big goals in mind:

1. Security
2. Privacy
3. Simplicity

We want to bring the block chain technology to the common people. We want to facilitate payments in online and offline business. We want to eliminate dependencies on banks. We bring financial freedom.

That means:

• no registration required
• no installation required
• run or install as app directly from your browser
• all functionality fully runs locally in your browser
• no data is stored on a server
• no keys are transfered to a server
• blockchain transactions are initiated from the browser

All you need to know about cryptocurrencies to use this application:

• the password grants access to your wallet and the backups
• the password cannot be recovered, only you know it
• a wallet consists of one or more accounts
• each account can be addressd by it's public address
• do backups to save all accounts on you local filesystem
• the accounts are only stored in your browser, so you must have a backup
• store the backup on a secure location, e.g. on an usb stick in a safe
• manage your estate: give password and key to two different trusted persons each, or store then in two different vaults

Security Considerations

A wallet in ethereum is nothing but a private key and a public address. Your password is used to encrypt the private key before it is stored to disk space (i.e.browser storage). A mnemonic is just another way to display a private key.

A private key is a text of 64 alphanumeric (hexadecimal) characters of 0-9 and a-f, often preceeded by 0x to indicate that it is a large hexadecimal number. The public address, which is similar to a bank account number, is in the same format, but only 40 characters long. The 64 characters of the private key are all you need to access an account. So if you carefully write the private key, either the number or the mnemonic, to a paper, that's already a valid backup. You control your funds with the privte key and a software to apply them, such as this application here.

There is one private key per account. The address can be recovered from the private key, but neither the private key nor the password can be recovered. So you must secure your private keys and remember the password. Tis application hides the complexity, if you backup or restore, you backup and restore all accounts of the wallet.

To receive payments, you need to share your public address, but never share your private key! That's why we only display the public address, not the private key. But you have to now: As soon as someone knows your public address, he can trace your balance and transactions. For secret accounts, you must not even share the address. Just fund them from a public address.

Pacta.Cash protects your assets as follows:

• you control the private key
• the private key does not leave your browser unless you export it (or your computer is hacked)
• If your computer is hacked, then the attacker still neds the password whis is not stored permanently, so you have a double security
• the privat key is stored locally in the prowser
• the private key is never sent to a server
• the private key is password protected

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