HODLER Wallet - The Only Open Source Multi-Asset Wallet

[HODLER_TECH]

We'd like to introduce the only fully Open Source, free multi-asset and multi-platform cryptocurrency wallet in the world.

We find it absolutely crucial that a cryptocurrency wallet should be completely Open Source. We explained why we think so here: https://steemit.com/source/@hodler.tech/hodler-the-only-multiwallet-that-s-open-source-and-why-it-matters

Basic specification of HODLER Wallet:

1. You have a full control over your private keys, nobody else but you can access them, you can export them to other wallets.
2. No private data of the user is ever collected.
3. Transactions are always generated and signed on your device. No sensitive data is ever send to an external server.
4. Don't trust, verify - thanks to being fully Open Source, the application is completely transparent. Any modifciation or update of the software is immediately verified by the community of security experts all around the world.

Official website of HODLER Wallet: https://hodler.tech

Supported platforms:

Android
- Play Store: https://play.google.com/store/apps/details?id=tech.hodler.core
- APK version: https://github.com/HODLERTECH/HODLER-Open-Source-Multi-Asset-Wallet/releases/
- Source Code: https://github.com/HODLERTECH/HODLER-Open-Source-Multi-Asset-Wallet/

Windows
- EXE App: https://github.com/HODLERTECH/HODLER-Open-Source-Multi-Asset-Wallet/releases/
- Source Code: https://github.com/HODLERTECH/HODLER-Open-Source-Multi-Asset-Wallet/

In the future we will add the support for following platforms:

- iOS
- MacOS
- Linux

Supported cryptocurrencies:

- Bitcoin (BTC)
- Bitcoin Cash (BCH)
- Litecoin (LTC)
- DASH
- Ravencoin (RVN)
- Bitcoin SV
- Ethereum (ETH)
- Every ERC20 token: by default we list EOS, Tronix (TRX), VeChain (VEN), Binance Coin, OmiseGo (OMG), ICON (ICX), Zilliqa (ZIL), Aeternity (AE), Bytom (BTM), 0x (ZRX) and our HODLER.TECH (HDL). Any other token can be easily added manually by pasting the contract address. We also implemented a unique feature of automatically scanning for and adding tokens to wallet balance: just import your MyEtherWallet private key, and all the ERC20 tokens you own will be automatically added to the balance of your wallet.

In the future we will add the support for Ripple, IOTA, Cardano, Stellar and ultimately all of the top 100 most popular cryptocurrencies.

Features of HODLER wallet:

- Easy and safe backup of the entire wallet done with our original solutions called HODLER Secure Backup and Encrypted QR Code Backup – read more about these solutions here: https://steemit.com/bitcoin/@hodler.tech/introducing-hsb-hodler-secure-backup. Of course our wallet also supports the traditional method of using a mnemonic seed.
- Full encryption of wallet data to protect it from unauthorized use
- Carefully thought out default settings allowing everyone to easily send and receive cryptocurrency, but with advanced options allowing for full customizations of transactions, like setting custom fees fitting to current network traffic
- Many fiat currencies to which you can convert your cryptocurrency: PLN, EUR, GBP, USD, CAD, INR and many more coming in the future
- Many languages supported: English, Polish, German, Spanish, French, Japanese, Chinese and many more coming in the future
- Full customization and organization of the wallet: moving, removing and adding cryptocurrencies as you see fit, as well as renaming coins on the list and adding many addresses for a single cryptocurrency
- Cryptocurrency finder for the coins listed on HODLER main screen
- ERC 20 Scanner:  add tokens with one click.

Incoming features:

- Support for Decentralized Applications (DApps): we seek to support decentralized solutions to help connect the world through a blockchain
- Many more coins: our goal is to suppport all of the most popular cryptocurrencies, as well as all the ETH, Lisk, NEO and Cardano tokens
- „HODL My Coins” feature: a HODL option for all or some of your funds – set a restriction on your wallet to HODL cryptocurrency for a chosen time
- NFC Payments: secure and contactless transactions - the new generation of mobile payments
- Retailer Mode: is our way to make the vision of cryptocurrency acceptance in stores worldwide a reality. HODLER’s Retailer Mode allows the acceptance of cryptocurrency payments even for people with hardly any knowledge of them. All it takes to enable payment acceptance is switching the Retailer Mode on. The transaction will happen similarly to transactions made with credit and debit cards. Read more about it here: https://steemit.com/bitcoin/@hodler.tech/cryptocurrency-payment-terminal-for-high-street-
retailers-retailer-mode-in-hodler-wallet
- Pay-to-Email & Pay-to-SMS: send your coins to people who don't know much about cryptocurrency and do not have a wallet

We invite you to download the wallet, testing, and send comments on its functionality!

[Vod]

Ok, with a name like HODLER, does it have the option to "timelock" the currency, making it unspendable until a certain date?

[JanEmil]

Good work. Congratulations.
Looking forward to the IOS version.
Have tried the windows version.

[HODLER_TECH]

Ok, with a name like HODLER, does it have the option to "timelock" the currency, making it unspendable until a certain date?

Not yet. This functionality will be part of "HODL My Coins" (timelock for all supported coins).

@JanEmil

Thank you. We appreciate your contribution to the development of the application.


At the moment, we're introducing the last list of user suggestions to the program. We hope that the next version of the program will be even better. We also prepare video about HODLER Secure Backup. We hope that encrypted backups will become standard in other wallets as well.

[locsta123]

Yea I think timelocking your coins would be great that was my first impression when I read the name of the wallet that it would help you hodl your coins in some way shape or form that's cool you guys will be implementing that

Although my only concern is what if you really need to sell them like if we see a price boom like 2017 and it would be vital to unlock the wallet?

[HODLER_TECH]

@locsta123
Native function to block coins in Bitcoin and forks can not be undone. If we manage to develop a different solution (blocking keys through additional encryption), we will have to make a gate for the owner. This may be an additional password that will be able to break within several days of bruteforce. Of course, the second, difficult password will still block unauthorized access to funds and addresses with the "HODL" function will be separated from the basic portfolio.
If we had access to this function in 2017, we would already be millionaires a few times Probably many other people had a similar situation.

[HODLER_TECH]

We have made some changes in the version we are now testing pre-release:

- showing the price of coins on the main screen
- Windows version will have additional descriptions of features to make the application as easy to use as possible for unexperienced users
- icons of 4 coins are fixed to look better with the white layout
- organizing has improved option for removing a single account
- translation fixes
- improved ERC20 Scanner (a feature allowing easy adding of ETH tokens)
- added option of typing in the fee as sat/b
- added option of sorting coins by name or address
- optimalized wallet startup
- application cache remembers the balance of last synchronization
- doubled the servers running our API and coded a router to switch between them to even out the traffic on each (we sometimes turn off some servers to simulate their malfunction)
- we are working on a main control dashboard for the servers to monitor for malfunctions and alert when they are detected; we're also working for the procedures for automatic repair

Apart from that, we have a long list of improvements and fixes suggested by the community, which we are successively implementing. Many users deserve thanks for their ongoing support, your involvement motivates us with lots of fresh energy to build HODLER.

[eternalgloom]

Like Vod, I'm also really interested in seeing you implement an option to timelock cryptocurrency.
It would be a real shame if you didn't add it, while having a name like that for your wallet.

Plus, it would be great if timelocks become easy to perform from within a wallet.
Though you might want to disable the function by default, since it would be pretty bad if someone did it by accident.

[HODLER_TECH]

Like Vod, I'm also really interested in seeing you implement an option to timelock cryptocurrency.
It would be a real shame if you didn't add it, while having a name like that for your wallet.

Plus, it would be great if timelocks become easy to perform from within a wallet.
Though you might want to disable the function by default, since it would be pretty bad if someone did it by accident.

HODL My Coins (Timelock)

This feature will of course be optional, clearly distinguished in the wallet, and the user will be informed on how it works.

Locking the funds will be based on using two passwords with HODLER Secure Backup or Encrypted QR Backup. The first password is the one chosen by the user while setting up a wallet, known only to him. The second password is generated automatically by an Open Source algorithm, unknown to the user and saved in the database. HODLER Wallet will create a special account, and the database will also contain a date on which the second password will be revealed to the user (via email and a popup in the application). This will mark the end of the period in which the user wished the selected funds to be locked.

Security:

1. If a hostile party finds out the second password, it does not endanger the funds, since without knowing the first password the attacker cannot access the wallet.

2. Similarly, if the attacker finds out the first password, the backup is still secured with the second one and funds cannot be accessed.

3. The second password won't be overly complicated, and it will be possible to break it with a brute force attack (using zip passwords cracking software) lasting several days. This will give the user a way to access his funds even in a situation where the password sent through email gets accidentally deleted. It will also allow the user to gain access to the funds in case he changes his mind about how long he should hodl for. After cracking the second password the user will also be able to use the archive to export private keys in case the wallet gets lost.

So far this is the preparatory concept, as simple as it can be. The users who use our original HODLER Secure Backup feature will also be able to easily use HODLER Secure Backup Timelock.
We're interested in learning what you think about it.

[yorndoe]

Ok, with a name like HODLER, does it have the option to "timelock" the currency, making it unspendable until a certain date?

HAHA so the balance will freeze for a while until the day

[yorndoe]

We'd like to introduce the only fully Open Source, free multi-asset and multi-platform cryptocurrency wallet in the world.

Do you have github repository for your app ?

[HODLER_TECH]

Our current repositories on GitHub:
- HODLER Wallet Windows: https://github.com/HODLERTECH/HODLER-Windows-Multi-Asset-Wallet
- HODLER Wallet Android: https://github.com/HODLERTECH/HODLER-Android-Multi-Asset-Wallet

We prepare the .zip versions of the source code that will be stored along with the software version compiled from it. The source code on GitHub contains the latest changes that may not yet be considered stable. The above repositories should be treated as Debian SID repositories. They will be in a state of continuous development.

[HODLER_TECH]

Some info concerning the updates of HODLER Wallet:

1. The Android app downloaded from Play Store is updated automatically on all devices within 24 hours from the release of a new version.
2. The .apk version downloaded from our website has to be updated manually. The only official source: https://hodler.tech/download/Android
3. The Windows version will automatically inform the user when a new version is available on our server. There's also an option to manually check if we're running the latest release, just select „Check Update” from the „Settings” tab. If a new version is available, it will be downloaded automatically, the application will close and restart in the updated version.

Yesterday we have released the 0.2.6 version. Windows users should see an information that an update is available. Let us know if you had any problems updating the application.

[Patatas]

The way I judge new is wallets is the flexibility they offer while claiming the forked coins. Don't get me wrong, it's good to have one solution for every coin out there but also there are wallets which provide the same service. My only concerns with them are claiming the forked coins. So will you be adding the easiness to claim the forked coins anytime soon?

You have coded this stuff in Pascal? Man, best of luck getting open source contributors.

[HODLER_TECH]

Forks are also important for us. If there is a fork that will be of interest to our users, we will certainly allow its claim inside the wallet.

We chose Delphi for many reasons, it is native, it does not require additional software, it is multiplatform and we have a strong programming team in this language. You're right, it's difficult to get Open Source code, but it forces us to write our own solutions, which means that we can create them freely Our app is not copy&paste coded, thanks to this we need to get to know each solution well to implement it in our apps. Moreover, we just like to write in Delphi:)

[FL4RE]

Like Vod, I'm also really interested in seeing you implement an option to timelock cryptocurrency.
It would be a real shame if you didn't add it, while having a name like that for your wallet.

Plus, it would be great if timelocks become easy to perform from within a wallet.
Though you might want to disable the function by default, since it would be pretty bad if someone did it by accident.

We can achieve this in few ways, like contract script with OP_CHECKLOCKTIMEVERIFY, or with nLocktime or just with our software way like encrypted zip with password (where time to crack it calculated to be eg. 24 hours, 48 hours etc.) with showing the right pass when time will come.  This feature will be available in near future

[abduramann]

Sorry for my ignorance. I have just macOS and iOS which the app doesn't support. Using your app, can I import my previous wallets? Nearly none of universal wallets doesn't have this feature. To my experience, just Imtoken 2 supports importing old EOS, ETH, BTC wallets. However, this time they put the restriction on the number of wallets for each currency, which is 3.

I'm looking forward to seeing your iOS version impatiently. Good luck.

[HODLER_TECH]

Sorry for my ignorance. I have just macOS and iOS which the app doesn't support. Using your app, can I import my previous wallets? Nearly none of universal wallets doesn't have this feature. To my experience, just Imtoken 2 supports importing old EOS, ETH, BTC wallets. However, this time they put the restriction on the number of wallets for each currency, which is 3.

I'm looking forward to seeing your iOS version impatiently. Good luck.

You can import any of the wallets of the supported coins using the private key. Moreover we are soon gonna implement ERC20 Scanner - a solution that will automatically add all the ETH tokens you own to your balance and show them on the coin list as soon as you import an ETH wallet.

[Rune]

How can you timelock coins cant the user just get there private key and use it with a different wallet and access them if they change there mind?
defeating the purpose of the timelock

[pooya87]

How can you timelock coins cant the user just get there private key and use it with a different wallet and access them if they change there mind?
defeating the purpose of the timelock

it has nothing to do with the wallet. in simple terms what happens is that you move your funds to a new address, but while doing so you create a transaction that has a "condition" in it, that "condition" is telling the network that this transaction output (your coins) are only spendable when a certain criteria (time) is met. effectively locking your funds.

I never thought I'd see pascal again in my life let alone see a project. i'll try checking the code to see how much of it i remember.