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Barchetta Smart-Contract Negotation Framework

• Build atop Bitcoin/Lightning-Network RGB protocol and Single-Use Seal UTXO's for contract-binding
• Contract attributes provided per Nostr NIPS:
  • NIP-99 Classified Listings
  • NIP-15 Nostr Marketplace
  • NIP-75 Zap Goals

Core technologies

• Spring Boot 3.2.4
  • Spring Web MVC
  • Spring JPA / Hibernate
• Presto - User Authentication/Authorization and Application Security framework
  • Spring Security
    • Pluggable Authentication & Authorization framework, (currently) supports:
      • Standalone
      • LDAP
      • OAuth2/JWT
        • Azure
        • (additional pending)
• Nostr - "A simple, open protocol that enables global, decentralized, and censorship-resistant social media."
  • SuperConductor - Java Nostr-Relay Framework & Web Application

Requirements

$ java -version

openjdk version "20.0.1" 2023-04-18
OpenJDK Runtime Environment (build 20.0.1+9-29)
OpenJDK 64-Bit Server VM (build 20.0.1+9-29, mixed mode, sharing)

$ mvn -version

Apache Maven 3.9.2 (c9616018c7a021c1c39be70fb2843d6f5f9b8a1c)
Maven home: ~/.sdkman/candidates/maven/current
Java version: 20.0.1, vendor: Oracle Corporation, runtime: ~/.sdkman/candidates/java/20.0.1-open
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.15.0-72-generic", arch: "amd64", family: "unix"

Build and run project

$ mvn spring-boot:run

Using application framework

Register new user:

localhost:8080/register

Login & Authenticate user:

localhost:8080/login

Show existing users (once Authenticated):

localhost:8080/users

Show available contracts / Engage contract:

localhost:8080/contract/display

Viewing DB contents

DB console:

localhost:8080/h2-console/

user: sa
password: // blank

Show all DB tables & entries:

SELECT * FROM APPUSER;
SELECT * FROM APPUSER_AUTHUSER;
SELECT * FROM CONTRACT;
SELECT * FROM AUTHORITIES;
SELECT * FROM USERS;

(helpful / relationship-grokable CONTRACT table query)

SELECT c.id, b.auth_user_name as creator, d.auth_user_name as counter_party, CASE WHEN c.creator_role = 0 THEN 'payER' WHEN c.creator_role = 1 THEN 'payEE' END as creator_role, CASE WHEN c.payer_state = 0 THEN 'approve' WHEN c.payer_state = 1 THEN 'veto' END as payer_state, CASE WHEN c.payee_state = 0 THEN 'approve' WHEN c.payee_state = 1 THEN 'veto' END as payee_state, c.text FROM CONTRACT c LEFT JOIN APPUSER_AUTHUSER b ON (c.app_user_id=b.app_user_id) LEFT JOIN APPUSER_AUTHUSER d ON (c.counter_party_id=d.app_user_id);