Exploring Automated Transactions and Decentralized Governance in Blockchain with VendingMachine and SimpleDAO Contracts
By Extreme Investor Network | September 18, 2024
Blockchain technology and smart contracts have revolutionized the way transactions are automated and decisions are made collectively. BitTorrent Inc. has shed light on two significant smart contracts – VendingMachine and SimpleDAO – that showcase the power of decentralized systems.

The VendingMachine Contract: Revolutionizing Digital Purchases
The VendingMachine contract is like a digital vending machine powered by blockchain technology. Some of its key features include:
- Initialization: The contract starts with 100 cupcakes and assigns the deployer as the owner.
- Refill Function: Only the owner can add more cupcakes to the machine.
- Purchase Function: Users can buy cupcakes by sending Ether, with each cupcake priced at 1 ETH.
- Balance Tracking: Tracks cupcake balances for each user interacting with the vending machine.
The SimpleDAO Contract: Embracing Decentralized Decision Making
The SimpleDAO contract is a foundational decentralized autonomous organization (DAO) with the following functionalities:
- Initialization: Sets up the DAO with a vending machine address, voting duration, and proposal options.
- Deposit Function: Members can deposit Ether into the DAO for voting and transactions.
- Voting Rights: The chairperson can grant voting rights to members.
- Voting: Members can vote on proposals for collective decision-making.
- Vote Counting: Tallies votes to determine the winning proposal.
- Withdrawal: Members can withdraw their deposited Ether from the DAO.
- End Vote: Finalizes the voting process and executes decisions, like buying cupcakes from the vending machine.
- Check Cupcake Balance: Allows members to check the DAO’s cupcake balance in the vending machine.
How These Contracts Collaborate
- Deploy the VendingMachine contract to set up the digital vending machine.
- Deploy the SimpleDAO contract, passing essential parameters like the VendingMachine address, voting duration, and proposal options.
- DAO members deposit Ether using the DepositEth function to participate in voting and transactions.
- The chairperson grants voting rights to members with the giveRightToVote function.
- Members cast their votes on proposals using the vote function for collective decision-making.
- After the voting period, countVote tallies the results to determine the winning proposal.
- If the vote passes to buy cupcakes, EndVote is executed to purchase from the VendingMachine.
- Members can check the DAO’s cupcake balance using the checkCupCakeBalance function.
- If the vote fails or there is insufficient balance, members can withdraw their Ether using the withdraw function.
Key Insights
- Automated Transactions: The VendingMachine contract showcases automated transactions without intermediaries.
- Decentralized Governance: SimpleDAO demonstrates collective decision-making and autonomous execution.
- Inter-Contract Interaction: SimpleDAO’s interaction with VendingMachine highlights the interoperability of smart contracts.
- Transparency: All transactions and decisions are immutably recorded on the blockchain, ensuring transparency.
- Programmable Money: These contracts exemplify how cryptocurrency can be programmed based on predefined rules and collective decisions.
These innovative contracts pave the way for a decentralized future in systems where automation, collective decision-making, and interoperability are paramount. As blockchain technology advances, the potential applications span from decentralized marketplaces to large-scale DAOs managing significant resources.
Developers and blockchain enthusiasts can explore the possibilities offered by these contracts as they envision a world where digital entities interact autonomously, make decisions, and transact without traditional intermediaries. This journey is just the beginning, and contracts like VendingMachine and SimpleDAO are shaping a transparent, automated, and decentralized tomorrow.
For further details, visit BitTorrent Inc.
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