Software engineer Tobias Ruck has revealed a project he’s been working on that allows a smart card to produce valid BCH signatures. Ruck tweeted about his experiment to the crypto community and Bitcoin Cash proponents showed their excitement about the future of offline payments.
Harnessing Offline Bitcoin Cash Payments
For quite some time the developer Tobias Ruck has been experimenting and developing concepts that help bolster the BCH ecosystem. News.Bitcoin.com reported on Ruck last year when the programmer demonstrated how an onchain game of chess is possible. After the opcode OP_Checkdatasig was implemented to the BCH chain, Ruck designed a chess game with the new feature. This spring, as the Simple Ledger Protocol matured, Ruck unveiled an onchain SLP token auction console. More recently, Ruck published a video about a new transaction version for the BCH chain called Nimbus. According to Ruck’s demonstration, the transaction version could unleash sophisticated smart contract potential on the BCH network. Moreover, it’s possible a cryptocurrency stablecoin like Dai could be created on the BCH network. Throughout the video, Ruck stresses several times that the Nimbus concept required a rule-set protocol change.
During the second week of October, Ruck showed the community he was experimenting with protocols that facilitate offline transactions. That week the programmer published another demo that showcased a bitcoin cash wallet tool called be.cash. Essentially, the concept provides individuals with the ability to send and sign a transaction without internet service. Then on November 11, the programmer tweeted that he developed “a smart card that produces valid Bitcoin Cash signatures.”
“Who would love to pay with a card — to a phone? Tap took less than a second. Imagine trying to set up shop accepting cards and all you need to do is install an app on your phone,” Ruck stated. The software engineer emphasized that his concept was “still very much unpolished. I still have to make the app build and send the transactions, but once finished — it‘s going to be huge — When scaled up, smart cards could literally be $1 each,” he added.