TL;DR: The 4.5.0, 4.5.1, and 4.5.1-1 zcashd nodes will reach End of Service on or about January 10, 2022. Prior to that time, all testnet and mainnet nodes should upgrade to 4.6.0 or later release.
Notable changes
Wallet
From this release, newly-created wallets will save the chain name (“Zcash”) and network identifier (e.g. “main”) to the wallet.dat file. This will enable the zcashd node to check on subsequent starts that the wallet.dat file matches the node’s configuration. Existing wallets will start saving this information in a later release.
libzcash_script
Two new APIs have been added to this library (zcash_script_legacy_sigop_count and zcash_script_legacy_sigop_count_precomputed), for counting the number of signature operations in the transparent inputs and outputs of a transaction. The presence of these APIs is indicated by a library API version of 2.
Updated RPCs
- The
getblocktemplateRPC method output now includes adefaultrootsfield, which provides various tree roots and block commitments matching the contents of the block template. If any part of the block template marked asmutablein the RPC method output is mutated, these roots may need to be recomputed. For more information on the derivation process, see the block header changes in ZIP 244. - Fixed an issue where
ERROR: spent index not enabledwould be logged unnecessarily on nodes that have either-insightexploreror-lightwalletdconfiguration options enabled. - The
getmininginfoRPC now omitscurrentblocksizeandcurrentblocktxwhen a block was never assembled via RPC on this node during its current process instantiation.
