minorkime-design/Kolo-Savings

A blockchain-powered platform for managing Rotating Savings and Credit Associations (ROSCAs) — digitizing African financial traditions (Ajo, Adashe, Esusu, Susu) on Stellar's blockchain. The key innovation is zero organizer misappropriation through immutable smart contracts and on-chain reputation scoring. # Kolo (kòló) — Rotating Savings on Stellar & Soroban **Kolo** is a production-quality decentralized rotating savings platform inspired by traditional African community thrift systems: **Ajo (Yoruba)**, **Adashe (Hausa)**, **Esusu (Igbo/Yoruba)**, and **Susu (Ghana/Caribbean)**. Built on the **Stellar network** with **Soroban smart contracts**, Kolo digitizes the centuries-old ROSCA (Rotating Savings and Credit Association) model—delivering non-custodial security, automated cycle payouts, transparent ledger verification, and on-chain community reputation scores. --- ## 🌟 The African Savings Heritage & ROSCA Model Rotating savings systems have served millions across Africa and the global diaspora for generations: ``` ┌───────────────────────────────┐ │ 10 Verified Members Join │ └──────────────┬────────────────┘ │ Each contributes $20 every cycle │ ▼ ┌───────────────────────────────┐ │ $200 Enters Group Vault │ │ (Soroban Smart Contract) │ └──────────────┬────────────────┘ │ ┌─────────────────────┼─────────────────────┐ │ │ │ ▼ ▼ ▼ Month 1: Month 2: Month 10: Adaeze receives Chinedu receives Emeka receives $200 pot $200 pot $200 pot ``` ### Traditional Systems Reimagined - **Ajo (Yoruba)**: Daily/monthly micro-contributions with strict rotational payouts. - **Adashe (Hausa)**: Northern Nigerian collective pooling for agriculture and market trade. - **Esusu (Igbo / Yoruba)**: Mutual-aid capital formation without bank interest rates. - **Susu (Ghana / West Africa)**: Trusted merchant and family thrift circles. --- ## 🛡️ Key Features ### 1. Non-Custodial Soroban Vaults - **Zero Admin Key Risk**: Organizers cannot divert, delay, or withhold pool funds. - **Time-Locked Contribution Windows**: Smart contracts manage contribution deadlines, automatic grace periods, and late penalty distributions. - …