Latest Release

0.16.0
Summary
Version 0.16.0 introduces NUT-28 (Pay-to-Blinded-Key) and NUT-29 (Batch Minting) as significant protocol enhancements. This release also brings BIP-321 (Bitcoin Payment Requests) support and BIP-353 resolution in the CLI. A major architectural refinement introduces the WalletTrait, unifying core and FFI wallet implementations.
Key highlights include:
- NUT-28 (Pay-to-Blinded-Key): Privacy-enhancing P2PK variant that blinds keys before spending.
- NUT-29 (Batch Minting): Support for batching mint quotes for improved efficiency.
- BIP-321 Support: Complete parsing and creation of Bitcoin payment requests (BIP-321).
- WalletTrait: Unified abstraction for all wallet types, simplifying integrations and FFI bindings.
- Improved WASM Support: Refactored WebSocket client and time handling for better browser compatibility.
- CLI Enhancements: BIP-353 resolution, NUT-26 PR support, and improved mint management commands.
Added

cdk: NUT-29 Batch Minting support (#1698) (thesimplekid).
cdk: NUT-28 Pay-to-Blinded-Key (P2BK) support (#1253, #1729) (lollerfirst).
cdk: BIP-321 (Bitcoin Payment Requests) parsing and creation (#1716) (thesimplekid).
cdk: WalletTrait shared between core and FFI wallets for improved architectural consistency (#1581) (crodas).
cdk: WASM-compatible WebSocket client abstraction (#1615) (crodas).
cdk: Added inactive/expired keysets to MintBuilder (crodas).
cdk: Added config_unit to MintBuilder (#1659) (thesimplekid).
cdk: Added get_mint_quotes to the mint database trait (#1689) (thesimplekid).
cdk: Added MacOS builds to the automated release process (#1702) (thesimplekid).
cdk: Subscribe to mint quote state changes in FFI bindings (#1725) (Forte11Cuba).
cdk: Add to_bech32_string to FFI (#1712) (thesimplekid).
cdk: Store Nostr payment request information (#1732) (thesimplekid).
cdk: Add keys and mint info to mock connector for testing (#1727) (thesimplekid).
cdk: Add keyset methods to WalletTrait and FFI (#1789) (crodas).
cdk: Add Supabase wallet database backend (#1540) ([asmogo]).
cdk-cli: BIP-353 human-readable address resolution (#1739) (thesimplekid).
cdk-cli: NUT-26 Payment Request CLI subcommands (#1731) (thesimplekid).
cdk-cli: Recover from incomplete saga command (#1674) (thesimplekid).
cdk-mintd: Home page and footer with custodial information (#1760, #1771) (thesimplekid).
cdk-mintd: Add expose_private_channels configuration for CLN backend (#1758) (4xvgal).
cdk(wallet): P2PK Receive wallet keyring (#1466) ((lescuer97).

Changed

cdk: BREAKING - Unified melt and melt_async logic in the mint implementation (#1715) (0xEgao).
cdk: BREAKING - NUT-18 payment requests now use Vec<T> instead of Option<Vec<T>> for better consistency (#1664) (Forte11Cuba).
cdk: Upgraded redb to version 3.0.0 (#1672) (thesimplekid).
cdk: Align signatory keyset derivation with the remote signer specification (#1257) (lescuer97).
cdk: For mint quotes, use enum for mint connector selection (#1708) (thesimplekid).
cdk: Replaced TryFrom<MeltQuote> with a direct OutgoingPaymentOptions function for cleaner API (#1724) (TheMhv).
cdk: Use amount with unit in gRPC communication (#1616) (thesimplekid).
cdk: Remove default features of hyper-rustls to reduce binary size and dependencies (#1768) (thesimplekid).
cdk: Static release builds for all platforms (#1683) (thesimplekid).
cdk: Tor service default configuration (#1449) (gandlafbtc).
cdk: Inject version header at client level instead of per request (#1766) (Forte11Cuba).
cdk: Moved spending conditions implementation to nut10 module for better organization (#1714) (TheMhv).
cdk-lnd: Update lnd proto file (#1656)) ((lescuer97).

Fixed

cdk: Auth token (NUT-22) no longer requires base64 padding for better compatibility (#1755) (crodas).
cdk: Wallet restore now scans all keysets, including inactive ones, to prevent missed funds (#1753) (crodas).
cdk: Correctly filter sagas and quotes by wallet unit and mint URL (#1759) (thesimplekid).
cdk: Ensure extra_json is persisted on mint_quotes in SQL backends (#1742) (vnprc).
cdk: Publish pubsub notifications only after successful transaction commit (thesimplekid).
cdk: Allow denomination reuse in amount split for restricted keysets (#1676) (thesimplekid).
cdk: Compensate for failed sagas in the mint to ensure consistency (#1675) (thesimplekid).
cdk: Fixed saga proof reservation in the wallet to prevent accidental spending during pending operations (#1728) (thesimplekid).
cdk: Pass currency unit through protobuf instead of hardcoding Msat in MakePayment (#1673) (crodas).
cdk: Fixed wallet validation for impossible multisig and refund configurations (#1711) (ritoban23).
cdk: Handle WASM compatibility in WebSocket client and time handling (#1615, #1662) (crodas).
cashu: Accept first tag in spending condition if multiple are provided (#1805) (thesimplekid).
cdk-axum: CORS preflight now allows all headers instead of hardcoded list (#1798) (robwoodgate).
cdk-mint-rpc: Added missing version header to all mint RPC CLI subcommands (#1764) (thesimplekid).

Removed

cdk: Remove output_already_signed (#1690) (thesimplekid).
cdk: Remove redundant unit field from get_payment_quote (#1704) (thesimplekid).
cdk: Remove deprecated promises field from RestoreResponse (#1663) (Forte11Cuba).

New Contributors

@Forte11Cuba made their first contribution in https://github.com/cashubtc/cdk/pull/1663
@TheMhv made their first contribution in https://github.com/cashubtc/cdk/pull/1696
@ritoban23 made their first contribution in https://github.com/cashubtc/cdk/pull/1711
@0xEgao made their first contribution in https://github.com/cashubtc/cdk/pull/1715
@4xvgal made their first contribution in https://github.com/cashubtc/cdk/pull/1758
@robwoodgate made their first contribution in https://github.com/cashubtc/cdk/pull/1798

Full Changelog: https://github.com/cashubtc/cdk/compare/v0.15.1...v0.16.0