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Protocol change radar

Zcash Protocol Change Radar

Official ZIP Index

Zcash network upgrade horizon

Selected high-signal Zcash Improvement Proposals

Showing 14 of 14 selected proposals. Selected ZIP 258: Deployment of the NU6.3 Network Upgrade.

Protocol proposal results

Selected high-signal proposals, not an exhaustive ZIP archive. Status can change.
NU6.3 / Network upgrade

ZIP 258

Deployment of the NU6.3 Network Upgrade

DraftDraft deployment ZIP

Defines the proposed NU6.3 deployment that introduces the Ironwood shielded pool and version 6 transaction support.

Target
NU6.3
Category
Consensus / Network
Reviewed

What Changes

Configures Mainnet activation height 3,428,143 and Testnet height 4,134,000. After activation, new value cannot enter Orchard, while value can leave Orchard for Ironwood or other supported destinations.

Who Needs to Act

Full-node operators, wallet teams, exchanges, miners, light-wallet infrastructure, and services that construct or parse Zcash transactions.

Readiness

Treat the height as configured candidate data, not a finality guarantee. ZIP 258 says zcashd is not expected to implement NU6.3, so operators should follow Zebra and wallet release guidance.

Complete Protocol MatrixAll 14 selected records in one crawlable view
Complete selected Zcash Improvement Proposal status and impact matrix
ZIPStatusTrackHuman impactPrimary source
ZIP 258Deployment of the NU6.3 Network UpgradeDraftDraft deployment ZIPNU6.3Network upgradeDefines the proposed NU6.3 deployment that introduces the Ironwood shielded pool and version 6 transaction support.Official ZIP
ZIP 257Deployment of the Orchard Temporary Vulnerability Mitigation and NU6.2 Network UpgradeFinalFinal and activatedMainnetSecurity responseDocuments the Orchard vulnerability response, the corrected Orchard Action circuit, and the NU6.2 activation that re-enabled Orchard.Official ZIP
ZIP 229Version 6 Transaction FormatDraftDraft for NU6.3NU6.3Transaction formatDefines the proposed v6 transaction format and adds Ironwood as a second Orchard-protocol transaction component with separate state.Official ZIP
ZIP 2005Ironwood Quantum RecoverabilityProposedProposed for NU6.3NU6.3RecoverabilityChanges Ironwood note construction so funds could be recovered through a future recovery protocol if discrete-log cryptography is broken.Official ZIP
ZIP 326NU6.3 Consequences for WalletsDraftDraft wallet specificationNU6.3Wallet behaviorSpecifies wallet behavior for Ironwood scanning, key generation, Orchard restrictions, and the Orchard-to-Ironwood migration.Official ZIP
ZIP 317Proportional Transfer Fee MechanismActive + DraftRevision 0 Active; later revisions DraftNU6.3FeesDefines the conventional fee mechanism used by Zcash wallets, with later revisions adapting the model for upcoming protocol changes.Official ZIP
ZIP 224Orchard Shielded ProtocolFinalFinal and deployedMainnetShielded protocolSpecifies Orchard, the current shielded protocol built around Halo 2 and the Pallas/Vesta curve cycle.Official ZIP
ZIP 2001Lockbox Funding StreamsFinalFinal; deployed with NU6MainnetFunding mechanismDefines the deferred development fund chain value pool used to reserve part of block issuance for future ecosystem funding decisions.Official ZIP
ZIP 316Unified Addresses and Unified Viewing KeysActive + DraftRevision 0 Active; later revisions not all ActiveStandardsAddressingDefines Unified Addresses and Unified Viewing Keys so multiple receiver and viewing-key types can travel in one encoded container.Official ZIP
ZIP 321Payment Request URIsActiveActive wallet standardStandardsPaymentsDefines zcash: payment request URIs so a wallet can construct one or more payments from a link or QR code with user approval.Official ZIP
ZIP 374Partially Created Zcash Transaction FormatDraftRevision 0 DraftStandardsSigning workflowDefines PCZT, a binary format for transactions assembled across constructors, provers, offline signers, and multiple participants.Official ZIP
ZIP 21825-second Block Target SpacingDraftDraft NU7 candidateNU7Consensus timingProposes reducing target block spacing from 75 seconds to 25 seconds in NU7 and adding per-pool shielded action limits.Official ZIP
ZIP 231Memo BundlesDraftDraft NU7 candidateNU7Encrypted memosProposes moving memo data into a per-transaction encrypted bundle instead of fixing a 512-byte memo to every shielded output.Official ZIP
ZIP 2002Explicit FeesDraftDraft for a v6 deploymentNU7Transaction feesProposes an explicit fee field in the v6 transaction format instead of deriving the fee from the difference between inputs and outputs.Official ZIP