BTContract is a platform designed to abstract the process of creating smart contracts and democratize access to this feature within the Bitcoin network. It enables users without advanced knowledge of programming or blockchain—who are interested in establishing financial contracts on the Bitcoin network—to carry out loans and purchases through an intuitive interface that eliminates the complexity of Bitcoin Script. Furthermore, the platform's native integration with the Lightning Network enables low-cost transactions with near-instant liquidity and scalability for everyday applications. In doing so, it fosters access to the decentralized economy and promotes global financial inclusion.

_{Figure 0X - BPMN Diagram} ^{Source: Material produced by the authors (2025)}

_{Figure 0X - BPMN Diagram - Part 1} ^{Source: Material produced by the authors (2025)}

• Users start by accessing the main page
• They click on "Getting Started"
• If they don't have an account:
  • Click "Create an Account"
  • Register by providing name, email, password, and public key
• If they already have an account:
  • Click "Login"
  • Fill in email and password fields
• After authentication, users are directed to the main view page

_{Figure 0X - BPMN Diagram - Part 2} ^{Source: Material produced by the authors (2025)}

After login, users can choose between two main paths:

• Visualize existing contracts
• Create new contracts

_{Figure 0X - BPMN Diagram - Part 3} ^{Source: Material produced by the authors (2025)}

To view existing contracts:

• Click on "Visualize my contracts"
• Select a contract from those already created
• View detailed information about the contract and signature of addressee

_{Figure 0X - BPMN Diagram - Part 4} ^{Source: Material produced by the authors (2025)}

To create a new contract:

• Click on "Create new Contract"
• Choose the type of contract needed:
• Fill in all required fields for the selected contract type
• Click "generate contract" to create the contract

_{Figure 0X - BPMN Diagram - Part 5} ^{Source: Material produced by the authors (2025)}

After generating the contract:

• System checks if user has a premium plan
• If Yes:
  • User can select "Generate Juridical Contract" for enhanced legal features
• If No (or after juridical contract generation):
  • User confirms contract details
  • Clicks "Deploy" to send the contract via email to the recipient

• Simplified contract creation without Bitcoin scripting knowledge
• Two contract types (Sale and Loan) with customizable parameters
• Premium option for juridical contract generation
• Contract visualization tools
• Automated deployment and recipient notification

• Mobile application​
• Implementation of new contract templates​
• Educational platform to assist the user

A special thanks to the MIT Bitcoin Hackathon organizing team for the opportunity.