Framework-independent crypto payment library
Rails Crypto Payment
A standalone Ruby library for exact USDT payment amounts and deposit retrieval, without Rails or database dependencies.
Outcome
Supports six-decimal payment amounts, EVM transfer verification, and signed Binance and Bybit deposit requests while leaving settlement under host application control.
My role
Open-Source Developer
How I helped
- Built exact USDT amount reservation helpers and deposit retrieval clients.
Product
The workflow in context
Concept illustration generated with 9Router ag/gemini-3.1-flash-image; not a product screenshot.
The solution
Convert Rupiah prices into exact USDT amounts with BigDecimal, reserve unique six-decimal amounts, and retrieve deposits from EVM chains or exchange internal transfers.
Implementation
EVM JSON-RPC filters ERC-20 Transfer logs by token and recipient, verifies successful transaction receipts, and converts amounts using token decimals. Oversized RPC block ranges split on range errors. Binance and Bybit clients sign requests with host-provided credentials; Bybit deposit retrieval paginates results.
Payment boundaries
The host application owns credentials, wallets, payment records, polling cursors, expiration, settlement, transaction locking, and jobs. Database uniqueness must protect reservations atomically. Deposit status, coin, amount, recipient, and timestamps must match before transactional settlement.
AI system implementation
No AI runtime is involved. BigDecimal arithmetic, validated RPC responses, and signed exchange requests keep payment matching deterministic. Model output never determines amounts or settlement.
Source
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