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README.md

GoDoc

atto is a tiny Nano wallet, which focuses on ease of use through simplicity. Included is a rudimentary Go library to interact with Nano nodes.

Disclaimer: I am no cryptographer and atto has not been audited. I cannot guarantee that atto is free of security compromising bugs.

Installation

You can download precompiled binaries from the releases page or build atto yourself like this; go 1.15 or higher is required:

git clone 'https://github.com/codesoap/atto.git'
cd atto
go build ./cmd/atto
# The atto binary is now available at ./atto. You could also install
# to ~/go/bin/ by executing "go install ./cmd/atto".

For Arch Linux @kseistrup also made atto available in the AUR.

Usage

$ # The new command generates a new seed.
$ atto new
D420296F5FEF486175FAA8F649DED00A5B0A096DB8D03972937542C51A7F296C
$ # Store it in your password manager:
$ pass insert nano
Enter password for nano: D420296F5FEF486175FAA8F649DED00A5B0A096DB8D03972937542C51A7F296C
Retype password for nano: D420296F5FEF486175FAA8F649DED00A5B0A096DB8D03972937542C51A7F296C

$ # The address command shows the address for an account.
$ pass nano | atto address
nano_3cyb3rwp5ba47t5jdzm5o7apeduppsgzw8ockn1dqt4xcqgapta6gh5htnnh

$ # With address and all following commands you can also provide an
$ # alternative account index (default is 0):
$ pass nano | atto -a 1 address
nano_1o3igdpf8c4msdgwcop71x4o16zzkhe4kyku4axdi8iwh8wh13e4fwgherik

$ # The balance command will receive pending funds automatically.
$ pass nano | atto balance
Creating receive block for 1.025 from nano_34ymtnmhwseiex4eqf7nnf5wcyg44kknuuen5wwurm18ma91msf6e1pqo8hx... done
Creating receive block for 0.100 from nano_39nd8eksw1ia6aokn96z4uthocke47hfsx9gr31othm1nrfwnzmmaeehiccq... done
1.337 NANO

$ # Choosing a representative is important for keeping the network
$ # decentralized.
$ pass nano | atto representative nano_1jr699mk1fi6mxy1y76fmuyf3dgms8s5pzcsge5cyt1az93x4n18uxjenx93
Creating change block... done

$ # To avoid accidental loss of funds, the send command requires
$ # confirmation, unless the -y flag is given:
$ pass nano | atto send 0.1 nano_11zdqnjpisos53uighoaw95satm4ptdruck7xujbjcs44pbkkbw1h3zomns5
Send 0.1 NANO to nano_11zdqnjpisos53uighoaw95satm4ptdruck7xujbjcs44pbkkbw1h3zomns5? [y/N]: y
Creating send block... done

$ atto -h
Usage:
	atto -v
	atto n[ew]
	atto [-a ACCOUNT_INDEX] a[ddress]
	atto [-a ACCOUNT_INDEX] b[alance]
	atto [-a ACCOUNT_INDEX] r[epresentative] REPRESENTATIVE
	atto [-a ACCOUNT_INDEX] [-y] s[end] AMOUNT RECEIVER

If the -v flag is provided, atto will print its version number.

The new subcommand generates a new seed, which can later be used with
the other subcommands.

The address, balance, representative and send subcommands expect a seed
as the first line of their standard input. Showing the first address of
a newly generated key could work like this:
atto new | tee seed.txt | atto address

The send subcommand also expects manual confirmation of the transaction,
unless the -y flag is given.

The address subcommand displays addresses for a seed, the balance
subcommand receives pending sends and shows the balance of an account,
the representative subcommand changes the account's representative and
the send subcommand sends funds to an address.

ACCOUNT_INDEX is an optional parameter, which must be a number between 0
and 4,294,967,295. It allows you to use multiple accounts derived from
the same seed. By default the account with index 0 is chosen.

Technical details

atto is written with ca. 1000 lines of code and uses minimal external dependencies. This makes it easy to audit the code yourself and ensure, that it does nothing you wouldn’t want it to do.

To change some defaults, like the node to use, take a look at cmd/atto/config.go.

Signatures are created without the help of a node, to avoid your seed or private keys being stolen by a node operator. The received account info is always validated using block signatures to ensure the node operator cannot manipulate atto by, for example, reporting wrong balances.

atto does not have any persistance and writes nothing to your file system. This makes atto very portable, but also means, that no history is stored locally. I recommend using a service like https://nanocrawler.cc/ to investigate transaction history.

Offline signing

See atto-safesign.

Donations

If you want to show your appreciation for atto, you can donate to me at nano_1i7wsbehgwhxct91wpojr1j588ydikd64uc7p3kj54nofqioc6ydjopezf13.