Arky 1.1

Python API bridging DPOS blockchains

Copyright 2016-2017 Toons, Copyright 2017 ARK, MIT licence

Install

Ubuntu / OSX

>From development version

sudo -H pip install https://github.com/ArkEcosystem/arky/archive/aip11.zip

If you work with python3

sudo -H pip3 install https://github.com/ArkEcosystem/arky/archive/aip11.zip

Windows

>From development version

pip install https://github.com/ArkEcosystem/arky/archive/aip11.zip

REST API

rest module allows developpers to send requests to the blockchain.

>>> import arky.rest
>>> arky.rest.use("ark")

It loads the ark.net file and create associated REST API endpoinds. All endpoinds can be reached using this syntax :

arky.rest.[METHOD].[endpoinds with "/" replaced by "."](param=value, ...[returnKey=name])

>>> # http equivalent [PEER ADDRESS]/api/delegates/get?username=arky
>>> arky.rest.GET.api.delegates.get(username="arky")
{'delegate': {'productivity': 99.22, 'producedblocks': 42283, 'approval': 1.06,
'rate': 19, 'publicKey': '030da05984d579395ce276c0dd6ca0a60140a3c3d964423a04e7ab
e110d60a15e9', 'username': 'arky', 'vote': '137484978342696', 'address': 'ARfDVW
Z7Zwkox3ZXtMQQY1HYSANMB88vWE', 'missedblocks': 334}, 'success': True}

It returns a python dictionary transposed from server json response. You can provide a returnKey option value to get the field you want from server response :

>>> arky.rest.use("oxy")
>>> arky.rest.GET.api.delegates.get(username="toons", returnKey="delegate")
{'rate': 20, 'producedblocks': 1354, 'approval': 14.36, 'username': 'toons', 'ra
nk': 20, 'publicKey': 'c0f4e7fb7555fd19de2b6a9de92f02b44cef56c782ca0f6983607b7f4
e508ef9', 'productivity': 99.63, 'missedblocks': 5, 'vote': '1476176009882003',
'address': '15981732227677853647X'}

Blockchain core

arky.rest.use loads a blockchain package find in *.net file as arky.core. Blockchain package define the current interface :

• arky.core.crypto.getKeys(secret)

• arky.core.crypto.getAddress(publicKey)

• arky.core.crypto.getSignature(tx, privateKey)

• arky.core.crypto.getId(tx)

• arky.core.crypto.getBytes(tx)

• arky.core.crypto.bakeTransaction(**kw)

• arky.core.sendTransaction(**kw)

• arky.core.sendPayload(*payloads)

• arky.core.sendToken(amount, recipientId, secret, secondSecret=None, vendorField=None)

• arky.core.registerSecondPublicKey(secondPublicKey, secret, secondSecret=None)

• arky.core.registerSecondPassphrase(secondPassphrase, secret, secondSecret=None)

• arky.core.registerDelegate(username, secret, secondSecret=None)

• arky.core.upVoteDelegate(usernames, secret, secondSecret=None)

• arky.core.downVoteDelegate(usernames, secret, secondSecret=None)

arky.core create transaction localy using pynacl and ecdsa crypto libraries so no secret is sent trough the network.

Send coins

Amount are given in SATOSHI.

>>> arky.rest.use("toxy")
>>> arky.core.sendToken(amount=100000000, recipientId="15981732227677853647X",
...                     secret="secret", secondSecret="secondSecret")
{'id': '13372419325129159475', 'success': True}

>>> arky.rest.use("dark")
>>> arky.core.sendToken(amount=100000000, recipientId="15981732227677853647X",
...                     secret="secret", secondSecret="secondSecret",
...                     vendorField="Your smart bridge message here")
{'success': True, 'transactionIds': ['24584ec149106e6206445106af8176cc885edf12ae
0c4534d2e4a3b4214d4a3f'], 'broadcast': '90.0%'}

Vote for delegate

>>> arky.rest.use("toxy")
>>> arky.core.upVoteDelegate(["toons", "unused"],
...                          secret="secret", secondSecret="secondSecret")
{'id': '10107701353010554951', 'success': True}

>>> arky.rest.use("dark")
>>> arky.core.downVoteDelegate(["d_arky"],
...                            secret="secret", secondSecret="secondSecret")
{'broadcast': '100.0%', 'transactionIds': ['ecd663ea46472cd7d72431eb13e9b23ef9c2
6aae8a1004621b871677960d01f1'], 'success': True}

CLI

You can use arky package without writing a line of code trough command line interface. There are two ways to launch the CLI.

>>> from arky import cli
>>> cli.start()

Welcome to arky-cli [Python 3.5.1 / arky 1.0a0]
Available commands: network, account, delegate
cold@.../>

Use network

cold@.../> network use
Network(s) found:
    1 - ark-aip11
    2 - ark
    3 - dark
    4 - kapu
    5 - lisk
    6 - oxy
    7 - shift
    8 - toxy
    9 - tshift
Choose an item: [1-9]> 8
hot@toxy/network>

Link account

hot@toxy/network> account link secret
hot@toxy/account[18160...4874X]> send 1.23 12427608128403844156X
Send 1.23000000 oxycoin to 12427608128403844156X ? [y-n]> y
Enter second passphrase> secondSecret
    Broadcasting transaction...
         id: 776848717338323058
    success: True

hot@toxy/account[18160...4874X]> status
         secondSignature: 1
         multisignatures: []
         secondPublicKey: 8b509500d5950122b3e446189b4312805515c8e7814a409e09ac5c21935564af
       u_multisignatures: []
      unconfirmedBalance: 2637000000
               publicKey: 5d036a858ce89f844491762eb89e2bfbd50a4a0a0da658e4b2628b25b117ae09
    unconfirmedSignature: 1
                 address: 18160565574430594874X
                 balance: 2637000000
hot@toxy/account[18160...4874X]>

Use Ledger Nano S

hot@ark/network> ledger link
hot@ark/ledger[AerGA...VbMft]> send 1 AUahWfkfr5J4tYakugRbfow7RWVTK35GPW "send 1 ARK from ledger using arky CLI"
Use ledger key to confirm or or cancel :
    Send 1.00000000 ARK to AUahWfkfr5J4tYakugRbfow7RWVTK35GPW ?
    Broadcasting transaction...
         broadcast: 100.0%
    transactionIds: ['34d4ce9dea2dd4f52e8d6af1977d5f00488694ecbdaf7c45f70a7c46c078c744']
           success: True
hot@ark/ledger[AerGA...VbMft]>

Author

Toons <[e-mail]>

Support this project

Toons Ark address: AUahWfkfr5J4tYakugRbfow7RWVTK35GPW

Toons Bitcoin address: 3Jgib9SQiDLYML7QKBYtJUkHq2nyG6Z63D

Show gratitude on Gratipay:

Vote for Toons’ delegate arky