Core Upgrade, Deterministic Masternodes and LLMQ

• Core upgrade is complete.
• Huge improvement in sync time (almost cut in half). Complete re-index on a Ryzen 2700X and SSD takes about 1.5-2 hours. This can be accelerated further once Zerocoin code is taken out.
• Testnet release with explorer on te14.zcoin.io
• Long lived masternode quorums are working
• Transitions from legacy Znodes and Evo Znodes have been tested
• Testing and bug fixing before public release
• Once released, 3 weeks to upgrade then an additional 3 weeks to register new masternodes on the new Evo system before payment mode switches over.
• Work to update Znode masternode tool to support the new masternode system has started.

Lelantus

• Lelantus join/split functions for spends are being written
• Unit tests for Lelantus integration being written
• Anonymity set to be adjusted to keep single proof verification within 0.5 seconds
• Batch verification to be implemented as follows
• For syncing
• Within each transaction
• Wallet to prompt upon startup and upon activity when new funds come in for password so that funds will be auto-minted to Lelantus (with a setting to disable auto-minting)
• Mints should always be individual transactions (with unique txid) for each address. This prevents mints from being linked together besides time.

Elysium Sigma and ZTM

• Elysium tokenization layer is merged to master and set to activate on 4th May.
• To decide whether to publicize as although fully functional, additional development time is required for adaptation of blockchain explorer to support Elysium tokens

Mobile App with Sigma

• Android build is ready with full Sigma mint and spend functionality (ask if you want to test!)
• PR pushed and awaiting for Edge to accept
• IOS build is being worked on

Electron Wallet GUI

• Electron wallet is now available on Get Zcoin page as an alternative wallet to QT.
• Address book completed by Arcadia with assistance from Tadhg
• Mnemonics recovery and creation completed by Arcadia with assistance from Tadhg
• Wallet version 1.06 released with bug fixes
• Startup code being rewritten via Sproxet’s ZCS proposal. Work is almost complete

Miscellaneous

• New academic paper on Hierarchical One-out-of-many Proofs that greatly improves proving time has been published.
• Found an issue where 32 bit builds of Zcoin could not generate Sigma transactions. Thanks to Noir team for letting us know!
• Initial research on FlyClient seems promising for fast syncs. May be easier solution than zk-proof based instant sync.
• Support Zcoin’s work via OpenCollective and get swag!