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6 Commits

Author SHA1 Message Date
hailin 001b6501a0 feat(deposit): add deposit balance API and Kafka consumer for deposit events 
Blockchain Service:
- Add /api/v1/deposit/balances endpoint to query on-chain USDT balances
- Add JWT authentication (passport, passport-jwt)
- Add JwtStrategy, JwtAuthGuard, Public decorator

Wallet Service:
- Add Kafka consumer for blockchain.deposits topic
- Add DepositConfirmedHandler to process deposit events and update wallet balance

Infrastructure:
- Add JWT_SECRET env var to blockchain-service in docker-compose.yml
- Add blockchain-service routes to Kong API Gateway

Frontend:
- Fix deposit_service.dart API path (remove duplicate /api prefix)

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Co-Authored-By: Claude <noreply@anthropic.com>
 2025-12-09 02:29:31 -08:00
hailin cf7230457f feat(blockchain-service): KAVA EVM address derivation and system accounts support 
## Address Derivation Changes
- Change KAVA from Cosmos bech32 (kava1...) to EVM format (0x...)
- KAVA now uses same EVM address as BSC for deposit monitoring
- Add KAVA to evmChains set for automatic monitoring registration

## Database Schema Updates (Migration: 20241208000000)
- MonitoredAddress: add address_type, account_sequence, system_account_type,
  system_account_id, region_code columns
- DepositTransaction: add address_type, account_sequence, system_account_type,
  system_account_id columns
- Make user_id nullable for system account support
- Create recovery_mnemonics table for account recovery
- Add indexes: idx_account_sequence, idx_type_active, idx_system_account_type,
  idx_deposit_account, and recovery_mnemonics indexes

## New Features
- Withdrawal request handler and Kafka consumer
- Test USDT deployment scripts for KAVA and BSC
- Smart contracts for TestUSDT token

## Infrastructure Updates
- Update mappers for new schema fields
- Update application and infrastructure modules

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Co-Authored-By: Claude <noreply@anthropic.com>
 2025-12-08 21:45:34 -08:00
hailin 6b85401d5c fix(mnemonic): fix recovery-by-mnemonic using hash verification instead of address matching 
## Problem
MPC wallet addresses have no cryptographic relationship with recovery mnemonics,
so address-based verification always failed for account recovery.

## Solution
Changed mnemonic verification from address matching to hash-based verification:
- Mnemonic acts as identity credential, verified by hash stored in blockchain-service
- Uses accountSequence to lookup stored mnemonic hash for verification

## Changes

### blockchain-service
- recovery-mnemonic.adapter.ts:
  - generateMnemonic() now async, uses bcrypt (rounds=12) for secure hashing
  - verifyMnemonic() now async, supports both bcrypt and legacy SHA256 hashes
  - Added backward compatibility for existing SHA256 hashed mnemonics
- mnemonic-verification.service.ts:
  - await verifyMnemonic() for async bcrypt comparison
- address-derivation.service.ts:
  - await generateMnemonic() for async bcrypt hashing
- package.json: added bcrypt dependency

### identity-service
- user-application.service.ts:
  - Changed recoverByMnemonic() to use verifyMnemonicByAccount (hash verification)
  - Added rate limiting: 5 failed attempts per hour per accountSequence
  - Uses Redis to track failed verification attempts
- redis.service.ts:
  - Added incr() and expire() methods for rate limiting
  - Added updateKeygenStatusAtomic() with Lua script for atomic state transitions
- mpc-keygen-completed.handler.ts:
  - Uses atomic Redis update to prevent race conditions
- blockchain-wallet.handler.ts:
  - Uses atomic Redis update for completed status

## Security Improvements
- bcrypt with 12 rounds for mnemonic hashing (anti-brute-force)
- Rate limiting prevents brute force attacks on mnemonic recovery
- Atomic Redis operations prevent race conditions in wallet creation flow

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Co-Authored-By: Claude <noreply@anthropic.com>
 2025-12-08 09:02:24 -08:00
hailin 3dc0fb15d8 feat(blockchain-service): add Prisma migration for init schema 
- Create migration 20241207000000_init with all 5 tables
- Tables: monitored_addresses, deposit_transactions, block_checkpoints, transaction_requests, blockchain_events
- Mark migration as applied to existing database

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Co-Authored-By: Claude <noreply@anthropic.com>
 2025-12-07 08:23:14 -08:00
hailin ce281b0657 fix(blockchain-service): install @scure/bip39 dependency 
Add @scure/bip39 package for mnemonic-based address derivation.
Package.json already had the dependency listed but node_modules was missing it.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-07 00:25:27 -08:00
hailin 50388c1115 feat(blockchain-service): implement complete blockchain service with DDD + Hexagonal architecture 
- Domain layer: ChainType, EvmAddress, TxHash, TokenAmount, BlockNumber value objects
- Domain events: DepositDetected, DepositConfirmed, WalletAddressCreated, TransactionBroadcasted
- Aggregates: DepositTransaction, MonitoredAddress, TransactionRequest
- Infrastructure: Prisma ORM, Redis cache, Kafka messaging, EVM blockchain adapters
- Application services: AddressDerivation, DepositDetection, BalanceQuery
- API: Health, Balance, Internal controllers with Swagger documentation
- Deployment: Docker, docker-compose, deploy.sh, health-check scripts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-06 20:54:58 -08:00