Today we are releasing Qtum Core v1.1.1. This includes all of the Qtum QRC Token features as the previous release, but fixes some confusing behavior. Now, anytime a contract or token sending transaction is created, the sender address will be used as the change address, assuring that the sender address always has a UTXO. Also included in this release is a bug fix for the `-salvagewallet` feature so that it can also salvage token transactions and not just native Qtum transactions.

This is an optional but recommended update if you are interacting with smart contracts or tokens.

Qtum Qt v0.14.7

Additionally, we have also released the Qtum-Qt Core Wallet (0.14.7) so you can now interact with QRC-20 tokens and smart contracts.

The following is a simple walkthrough of how one can add tokens to their wallet and interact with contracts.

Adding a Token in the Qtum Core Wallet

After opening Qtum-Qt, go to the QRC Token section. Copy the contract address of the token you are interested in. Once you input the address details, the Token Name, Symbol, and Decimal fields should automatically populate. Then select your token address. (I also added the Vevue token contract address, since the crowdsale is now live.)

Vevue smart contract address:

9d3d4cc1986d81f9109f2b091b7732e7d9bcf63b

Interacting with Contracts

To Purchase Vevue tokens

select Smart Contract > Send to enter smart contract address:

9d3d4cc1986d81f9109f2b091b7732e7d9bcf63b enter Qtum amount select “Send to Contract”

Wallet & Token Info

After about a minute or so, your tokens should appear in your wallet along with a gas refund.

The wallet is easy to use, and we are happy that projects are already utilizing our functions. If you haven’t already done so, please switch your ERC 20 Qtum tokens to the main network tokens immediately via qtum.changelly.com. Bodhi will be airdropping BOT to Qtum addresses, 4 BOT for every 100 Qtum.

About Qtum and Ignition

Qtum is a decentralized blockchain project built utilizing the advantages of the UTXO model, with support for Solidity smart contracts, and secured by a proof of stake consensus model. It achieves this through the revolutionary Account Abstraction Layer which allows the EVM to communicate with Qtum’s Bitcoin-like UTXO blockchain. For more general information about Qtum as well as links to join our community, go to https://qtum.org

Qtum — We have Ignition, the first release of the main network is live. This is the main network where the tokens hold value and should be guarded very carefully. There will be a testnet setup soon for developers, in the meantime you can use -regtest mode for testing needs.

The major features implemented in Qtum Ignition include:

The Ethereum Virtual Machine, which allows for compatibility with most existing Solidity based smart contracts. The Smart Staking Protocol is complete, which is an optimized Proof of Stake implementation designed for a smart contract platform (however, smart contracts can not participate in staking yet). An early and basic smart contract GUI has been implemented that can be used for creating contracts, sending data and Qtum to them, and checking their status by executing them locally. This functionality is similar to Mist’s UI right now, but it is still an early version. We will be working on this more to improve it. Regtest mode, which is ideal for developers who wish to create their own private blockchain. It is tuned specifically to make development easier. It will stake blocks automatically every 30 seconds, and can generate proof-of-work blocks instantly as needed. The Decentralized Governance Protocol is completely implemented and functional, which allows certain network parameters to be modified without a fork.

For more technical information for how to start developing with Qtum please read this Guide and also see this tutorial for deploying a simple faucet smart contract (it hasn’t yet been updated for Mainnet for obvious reasons, but all the instructions are the same and you can try them in regtest mode)

Note: Qtum Core is considered beta software. We make no warranties or guarantees of its security or stability. Dapps listed in this article are just for educational purposes and shouldn’t be misconstrued as any type of advice.