git / moonbite-core / doc/release-notes-litecoin.md · raw

Litecoin Core version 0.21.5.5 is now available from: <https://download.litecoin.org/litecoin-0.21.5.5/>.This is a patch version release that includes important MWEB consensushardening, node reliability improvements, wallet and mining fixes, andbuild/test updates.Please report bugs using the issue tracker at GitHub:  <https://github.com/litecoin-project/litecoin/issues>Notable changes===============Important MWEB updates----------------------This release contains important MWEB validation and state-handling fixes.Upgrading is recommended for all users, especially miners, pools, and nodeoperators using MWEB.- Added additional validation for MWEB inputs, pegins, HogEx data, kernel fees,  and kernel lock heights (`e7cbf1d`, `42e7071`, `8f8ad64`, `b9bd99a`,  `7564f05`, `a549004`).- Hardened MWEB amount and fee calculations against overflow and invalid edge  cases (`42e7071`, `1cd94bb`).- Added fallback handling for rare hash-to-secret-key cases so derived MWEB  keys are valid scalars (`773c138`).- Added consensus parameters for known frozen or approved MWEB transactions and  outputs needed to keep MWEB state balanced (`1dcbf3f`, `17f16ce`, `66f6856`).- Improved handling of mutated or invalid MWEB block data so invalid data does  not leave stale block data or mutate cached chainstate (`742ee94`, `ff309cd`,  `17f16ce`).- Updated MWEB chainstate during block replay and crash recovery (`bbd3b78`).Network and policy changes--------------------------- Increased the maximum P2P protocol message length to 32 MB so valid MWEB  blocks and messages fit under the message-size limit (`457bcd7`).- Enforced standard script policy checks for pegout scripts (`c25bf89`).Mining changes--------------- Avoid reading the previous block from disk when constructing HogEx  transactions; use MWEB data already stored in the block index (`873d9d2`).- Improved `getblocktemplate` fee and sigop accounting for transactions carrying  MWEB data (`873d9d2`).- Avoid including MWEB transactions in candidate blocks when their input and  output commitments would sum to zero (`f423a84`).Wallet and RPC changes----------------------- Fixed MWEB balance and pegout accounting (`1dcbf3f`, `1cc1cee`).- Added MWEB view keys to `dumpwallet` (`eae9e47`).- Supported `maxfeerate=0` for MWEB transactions in `sendrawtransaction` and  `testmempoolaccept` (`8782ab9`).- Allowed `getblocktemplate` on test chains when the node is unconnected or in  initial block download (`455aff8`).Bug fixes---------- Fixed MWEB PMMR rewind corruption and improved MMR file write durability  (`23e5eac`, `bf25a7c`, `3110a7e`).- Fixed a cache leaf bounds check (`6dd2952`).- Fixed a transaction index consistency issue that could occur if writing block  data failed after the index commit (`eb7f68a`).- Fixed wallet loading with Boost 1.78 and newer (`3c3aedb`, `c882663`).- Fixed a debug build logger symbol conflict and made MWEB logger initialization  safer (`6fc0530`, `b4c0037`).Build and test changes----------------------- Added missing `<cstdint>` includes needed by some compilers (`58f89ba`).- Replaced the functional test dependency on the external `litecoin_scrypt`  Python package (`d139222`).- Added and expanded tests for MWEB P2P messages, duplicate pegins, crash  recovery, mutated blocks, mining, and wallet/RPC behavior.- Normalized line endings in selected documentation, Qt resources, and fuzz test  files (`dcc7bc5`).- Fixed the broken Transifex link in the README (`0f5f7d5`).Credits=======Thanks to everyone who directly contributed to this release:- [David Burkett](https://github.com/DavidBurkett/)- [Loshan](https://github.com/losh11)