Changelog
Track version history, recent updates, breaking changes, and new features in V3 Custody.
Recent Releases
Stay informed about the latest improvements to V3 Custody, your MPC custody solution built on infrastructure you own. Review changes by version to understand impacts on your integration.
New Features
- Added support for 5 additional blockchain networks, bringing total to 25+ chains.
- Introduced Policy Engine v2 with dynamic rule evaluation for multi-party approvals.
Improvements
- Enhanced Ledger reporting with historical balance reconstruction API endpoint.
- Optimized signing uptime to 99.999% through improved retry mechanisms.
Bug Fixes
- Fixed reserved funds unlocking issue during approval workflows.
- Resolved mobile app signature verification edge cases.
New Features
- Launched mobile app for on-the-go transaction approvals.
- Added REST API endpoints for Reports generation and export.
Bug Fixes
- Patched double-entry posting duplication in high-volume scenarios.
- Fixed API retry-safe behavior for idempotent transaction submissions.
Breaking Changes
- Updated authentication to require JWT tokens instead of API keys. Migrate using the new
/auth/tokenendpoint.
New Features
- Introduced Reserved Funds mechanism for pre-approval locking.
- Added Web app dashboard for Ledger visualization and Policy Engine configuration.
Improvements
- Every transaction now traceable to source postings.
Upgrading to the Latest Version
Follow these steps to upgrade your V3 Custody integration safely. Always test in staging before production.
Review breaking changes in each release. Backup your Policy Engine configurations before upgrading.
Update SDK
Install the latest version of the V3 Custody SDK.
npm install @v3/custody-sdk@latest
pip install v3-custody-sdk==1.3.0
Migrate Auth
Switch to JWT authentication.
const sdk = new V3CustodySDK({
apiUrl: 'https://api.example.com/v1',
token: 'YOUR_JWT_TOKEN' // From /auth/token
});
sdk = V3CustodySDK(
api_url='https://api.example.com/v1',
token='YOUR_JWT_TOKEN'
)
Test Transactions
Verify a test transaction.
Unique transaction identifier.
Deploy
Deploy to production and monitor signing uptime.
Upcoming Features
Track planned enhancements in our development pipeline.
Multi-sig Thresholds
Configurable approval thresholds
Webhook Integrations
Real-time event notifications
Advanced Reports
Custom financial statements
Mobile Approvals
iOS/Android transaction signing
Resources
Introduction
Get started with V3 Custody fundamentals.
Quickstart
Set up your first MPC wallet.
API Reference
Full API documentation and examples.
Support
FAQs and troubleshooting guides.
Subscribe to our RSS feed or join the Discord for instant update notifications.