zcash / zips

Zcash Improvement Proposals
https://zips.z.cash
MIT License
274 stars 156 forks source link
cryptocurrency cryptography specifications zcash

.. Title: Specifications and Zcash Improvement Proposals

What are ZIPs?

Zcash Improvement Proposals (ZIPs) are the way to:

Contributing

The authors of a ZIP are responsible for building consensus within the community and documenting / addressing dissenting opinions.

Anyone can write a ZIP! We encourage community contributions and decentralization of work on the Zcash protocol. If you’d like to bounce ideas off people before formally writing a ZIP, we encourage it! Visit the ZcashCommunity Discord chat <https://discord.gg/kdjfvps>__ to talk about your idea.

Participation in the Zcash project is subject to a Code of Conduct <https://github.com/zcash/zcash/blob/master/code_of_conduct.md>__.

The Zcash protocol is documented in its Protocol Specification <rendered/protocol/protocol.pdf> (dark mode version) <rendered/protocol/protocol-dark.pdf>.

To start contributing, first read ZIP 0 <zips/zip-0000.rst> which documents the ZIP process. Then clone this repo <https://github.com/zcash/zips> from GitHub, and start adding your draft ZIP, formatted either as reStructuredText or as Markdown, into the zips/ directory.

For example, if using reStructuredText, use a filename matching zips/draft-*.rst. Use make to check that you are using correct reStructuredText <https://docutils.sourceforge.io/rst.html> or Markdown <https://pandoc.org/MANUAL.html#pandocs-markdown> syntax, and double-check the generated rendered/draft-*.html file before filing a Pull Request. See here <protocol/README.rst>__ for the project dependencies.

NU7 Candidate ZIPs

The following ZIPs are under consideration for inclusion in NU7:

In addition, ZIP 317: Proportional Transfer Fee Mechanism <zip-0317.rst>__ may be updated.

This list is only provided here for easy reference; no decision has been made on whether to include each of these ZIPs.

ZIP 254: Deployment of the NU7 Network Upgrade <zip-0254.rst>__ will define which ZIPs are included in NU7.

License

Unless otherwise stated in this repository’s individual files, the contents of this repository are released under the terms of the MIT license. See COPYING <COPYING.rst>__ for more information or see https://opensource.org/licenses/MIT .

Released ZIPs

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<tr> <td>0</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0000.rst">ZIP Process</a></td> <td>Active</td>
<tr> <td>32</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0032.rst">Shielded Hierarchical Deterministic Wallets</a></td> <td>Final</td>
<tr> <td>143</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0143.rst">Transaction Signature Validation for Overwinter</a></td> <td>Final</td>
<tr> <td>155</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0155.rst">addrv2 message</a></td> <td>Proposed</td>
<tr> <td>173</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0173.rst">Bech32 Format</a></td> <td>Final</td>
<tr> <td>200</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0200.rst">Network Upgrade Mechanism</a></td> <td>Final</td>
<tr> <td>201</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0201.rst">Network Peer Management for Overwinter</a></td> <td>Final</td>
<tr> <td>202</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0202.rst">Version 3 Transaction Format for Overwinter</a></td> <td>Final</td>
<tr> <td>203</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0203.rst">Transaction Expiry</a></td> <td>Final</td>
<tr> <td>205</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0205.rst">Deployment of the Sapling Network Upgrade</a></td> <td>Final</td>
<tr> <td>206</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0206.rst">Deployment of the Blossom Network Upgrade</a></td> <td>Final</td>
<tr> <td>207</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0207.rst">Funding Streams</a></td> <td>[Pre-NU6] Final, [NU6] Implemented (zcashd and zebrad)</td>
<tr> <td>208</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0208.rst">Shorter Block Target Spacing</a></td> <td>Final</td>
<tr> <td>209</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0209.rst">Prohibit Negative Shielded Chain Value Pool Balances</a></td> <td>Final</td>
<tr> <td>211</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0211.rst">Disabling Addition of New Value to the Sprout Chain Value Pool</a></td> <td>Final</td>
<tr> <td>212</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0212.rst">Allow Recipient to Derive Ephemeral Secret from Note Plaintext</a></td> <td>Final</td>
<tr> <td>213</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0213.rst">Shielded Coinbase</a></td> <td>Final</td>
<tr> <td>214</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0214.rst">Consensus rules for a Zcash Development Fund</a></td> <td>[Revision 0] Final, [Revision 1] Implemented (zcashd and zebrad)</td>
<tr> <td>215</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0215.rst">Explicitly Defining and Modifying Ed25519 Validation Rules</a></td> <td>Final</td>
<tr> <td>216</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0216.rst">Require Canonical Jubjub Point Encodings</a></td> <td>Final</td>
<tr> <td>221</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0221.rst">FlyClient - Consensus-Layer Changes</a></td> <td>Final</td>
<tr> <td>224</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0224.rst">Orchard Shielded Protocol</a></td> <td>Final</td>
<tr> <td>225</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0225.rst">Version 5 Transaction Format</a></td> <td>Final</td>
<tr> <td>236</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0236.rst">Blocks should balance exactly</a></td> <td>Implemented (zcashd and zebrad)</td>
<tr> <td>239</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0239.rst">Relay of Version 5 Transactions</a></td> <td>Final</td>
<tr> <td>243</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0243.rst">Transaction Signature Validation for Sapling</a></td> <td>Final</td>
<tr> <td>244</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0244.rst">Transaction Identifier Non-Malleability</a></td> <td>Final</td>
<tr> <td>250</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0250.rst">Deployment of the Heartwood Network Upgrade</a></td> <td>Final</td>
<tr> <td>251</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0251.rst">Deployment of the Canopy Network Upgrade</a></td> <td>Final</td>
<tr> <td>252</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0252.rst">Deployment of the NU5 Network Upgrade</a></td> <td>Final</td>
<tr> <td>253</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0253.md">Deployment of the NU6 Network Upgrade</a></td> <td>Implemented (zcashd and zebrad)</td>
<tr> <td>300</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0300.rst">Cross-chain Atomic Transactions</a></td> <td>Proposed</td>
<tr> <td>301</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0301.rst">Zcash Stratum Protocol</a></td> <td>Final</td>
<tr> <td>308</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0308.rst">Sprout to Sapling Migration</a></td> <td>Final</td>
<tr> <td>316</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0316.rst">Unified Addresses and Unified Viewing Keys</a></td> <td>[Revision 0] Final, [Revision 1] Proposed</td>
<tr> <td>317</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0317.rst">Proportional Transfer Fee Mechanism</a></td> <td>Active</td>
<tr> <td>320</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0320.rst">Defining an Address Type to which funds can only be sent from Transparent Addresses</a></td> <td>Proposed</td>
<tr> <td>321</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0321.rst">Payment Request URIs</a></td> <td>Proposed</td>
<tr> <td>401</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0401.rst">Addressing Mempool Denial-of-Service</a></td> <td>Active</td>
<tr> <td>1014</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-1014.rst">Establishing a Dev Fund for ECC, ZF, and Major Grants</a></td> <td>Active</td>
<tr> <td>1015</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-1015.rst">Block Subsidy Allocation for Non-Direct Development Funding</a></td> <td>Proposed</td>
<tr> <td>2001</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2001.rst">Lockbox Funding Streams</a></td> <td>Implemented (zcashd and zebrad)</td>

ZIP Title Status

Draft ZIPs

These are works-in-progress that have been assigned ZIP numbers. These will eventually become either Proposed (and thus Released), or one of Withdrawn, Rejected, or Obsolete.

In some cases a ZIP number is reserved by the ZIP Editors before a draft is written.

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<tr> <td><span class="reserved">1</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0001.rst">Network Upgrade Policy and Scheduling</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">2</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0002.rst">Design Considerations for Network Upgrades</a></td> <td>Reserved</td>
<tr> <td>68</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0068.rst">Relative lock-time using consensus-enforced sequence numbers</a></td> <td>Draft</td>
<tr> <td><span class="reserved">76</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0076.rst">Transaction Signature Validation before Overwinter</a></td> <td>Reserved</td>
<tr> <td>112</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0112.rst">CHECKSEQUENCEVERIFY</a></td> <td>Draft</td>
<tr> <td>113</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0113.rst">Median Time Past as endpoint for lock-time calculations</a></td> <td>Draft</td>
<tr> <td><span class="reserved">204</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0204.rst">Zcash P2P Network Protocol</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">217</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0217.rst">Aggregate Signatures</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">219</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0219.rst">Disabling Addition of New Value to the Sapling Chain Value Pool</a></td> <td>Reserved</td>
<tr> <td>222</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0222.rst">Transparent Zcash Extensions</a></td> <td>Draft</td>
<tr> <td>226</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0226.rst">Transfer and Burn of Zcash Shielded Assets</a></td> <td>Draft</td>
<tr> <td>227</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0227.rst">Issuance of Zcash Shielded Assets</a></td> <td>Draft</td>
<tr> <td><span class="reserved">228</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0228.rst">Asset Swaps for Zcash Shielded Assets</a></td> <td>Reserved</td>
<tr> <td>230</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0230.rst">Version 6 Transaction Format</a></td> <td>Draft</td>
<tr> <td>231</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0231.md">Memo Bundles</a></td> <td>Draft</td>
<tr> <td>233</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0233.md">Network Sustainability Mechanism: Burning</a></td> <td>Draft</td>
<tr> <td>234</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0234.md">Network Sustainability Mechanism: Issuance Smoothing</a></td> <td>Draft</td>
<tr> <td>235</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0235.md">Burn 60% of Transaction Fees</a></td> <td>Draft</td>
<tr> <td>245</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0245.rst">Transaction Identifier Digests & Signature Validation for Transparent Zcash Extensions</a></td> <td>Draft</td>
<tr> <td>254</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0254.md">Deployment of the NU7 Network Upgrade</a></td> <td>Draft</td>
<tr> <td>302</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0302.rst">Standardized Memo Field Format</a></td> <td>Draft</td>
<tr> <td><span class="reserved">303</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0303.rst">Sprout Payment Disclosure</a></td> <td>Reserved</td>
<tr> <td>304</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0304.rst">Sapling Address Signatures</a></td> <td>Draft</td>
<tr> <td><span class="reserved">305</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0305.rst">Best Practices for Hardware Wallets supporting Sapling</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">306</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0306.rst">Security Considerations for Anchor Selection</a></td> <td>Reserved</td>
<tr> <td>307</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0307.rst">Light Client Protocol for Payment Detection</a></td> <td>Draft</td>
<tr> <td><span class="reserved">309</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0309.rst">Blind Off-chain Lightweight Transactions (BOLT)</a></td> <td>Reserved</td>
<tr> <td>310</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0310.rst">Security Properties of Sapling Viewing Keys</a></td> <td>Draft</td>
<tr> <td>311</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0311.rst">Zcash Payment Disclosures</a></td> <td>Draft</td>
<tr> <td>312</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0312.rst">FROST for Spend Authorization Multisignatures</a></td> <td>Draft</td>
<tr> <td><span class="reserved">314</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0314.rst">Privacy upgrades to the Zcash light client protocol</a></td> <td>Reserved</td>
<tr> <td>315</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0315.rst">Best Practices for Wallet Implementations</a></td> <td>Draft</td>
<tr> <td><span class="reserved">318</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0318.rst">Associated Payload Encryption</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">319</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0319.rst">Options for Shielded Pool Retirement</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">322</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0322.rst">Generic Signed Message Format</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">323</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0323.rst">Specification of getblocktemplate for Zcash</a></td> <td>Reserved</td>
<tr> <td>324</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0324.rst">URI-Encapsulated Payments</a></td> <td>Draft</td>
<tr> <td><span class="reserved">332</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0332.rst">Wallet Recovery from zcashd HD Seeds</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">339</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0339.rst">Wallet Recovery Words</a></td> <td>Reserved</td>
<tr> <td>400</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0400.rst">Wallet.dat format</a></td> <td>Draft</td>
<tr> <td><span class="reserved">402</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0402.rst">New Wallet Database Format</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">403</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0403.rst">Verification Behaviour of zcashd</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">416</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0416.rst">Support for Unified Addresses in zcashd</a></td> <td>Reserved</td>
<tr> <td>2002</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2002.rst">Explicit Fees</a></td> <td>Draft</td>
<tr> <td>2003</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2003.rst">Disallow version 4 transactions</a></td> <td>Draft</td>
<tr> <td>2004</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2004.rst">Remove the dependency of consensus on note encryption</a></td> <td>Draft</td>
<tr> <td>guide-markdown</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-guide-markdown.md">{Something Short and To the Point}</a></td> <td>Draft</td>
<tr> <td>guide</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-guide.rst">{Something Short and To the Point}</a></td> <td>Draft</td>

ZIP Title Status

Drafts without assigned ZIP numbers

These are works-in-progress, and may never be assigned ZIP numbers if their ideas become obsoleted or abandoned. Do not assume that these drafts will exist in perpetuity; instead assume that they will either move to a numbered ZIP, or be deleted.

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<tr> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/draft-noamchom67-manufacturing-consent.rst">Manufacturing Consent; Re-Establishing a Dev Fund for ECC, ZF, ZCG, Qedit, FPF, and ZecHub</a></td>
<tr> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/draft-nuttycom-funding-allocation.rst">Block Reward Allocation for Non-Direct Development Funding</a></td>
<tr> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/draft-zf-community-dev-fund-2-proposal.rst">Establishing a Hybrid Dev Fund for ZF, ZCG and a Dev Fund Reserve</a></td>

Title

Withdrawn, Rejected, or Obsolete ZIPs

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Click to show/hide
ZIP Title Status
210 Sapling Anchor Deduplication within Transactions Withdrawn
220 Zcash Shielded Assets Withdrawn
313 Reduce Conventional Transaction Fee to 1000 zatoshis Obsolete
1001 Keep the Block Distribution as Initially Defined — 90% to Miners Obsolete
1002 Opt-in Donation Feature Obsolete
1003 20% Split Evenly Between the ECC and the Zcash Foundation, and a Voting System Mandate Obsolete
1004 Miner-Directed Dev Fund Obsolete
1005 Zcash Community Funding System Obsolete
1006 Development Fund of 10% to a 2-of-3 Multisig with Community-Involved Third Entity Obsolete
1007 Enforce Development Fund Commitments with a Legal Charter Obsolete
1008 Fund ECC for Two More Years Obsolete
1009 Five-Entity Strategic Council Obsolete
1010 Compromise Dev Fund Proposal With Diverse Funding Streams Obsolete
1011 Decentralize the Dev Fee Obsolete
1012 Dev Fund to ECC + ZF + Major Grants Obsolete
1013 Keep It Simple, Zcashers: 10% to ECC, 10% to ZF Obsolete

Index of ZIPs

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<tr> <td>0</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0000.rst">ZIP Process</a></td> <td>Active</td>
<tr> <td><span class="reserved">1</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0001.rst">Network Upgrade Policy and Scheduling</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">2</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0002.rst">Design Considerations for Network Upgrades</a></td> <td>Reserved</td>
<tr> <td>32</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0032.rst">Shielded Hierarchical Deterministic Wallets</a></td> <td>Final</td>
<tr> <td>68</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0068.rst">Relative lock-time using consensus-enforced sequence numbers</a></td> <td>Draft</td>
<tr> <td><span class="reserved">76</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0076.rst">Transaction Signature Validation before Overwinter</a></td> <td>Reserved</td>
<tr> <td>112</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0112.rst">CHECKSEQUENCEVERIFY</a></td> <td>Draft</td>
<tr> <td>113</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0113.rst">Median Time Past as endpoint for lock-time calculations</a></td> <td>Draft</td>
<tr> <td>143</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0143.rst">Transaction Signature Validation for Overwinter</a></td> <td>Final</td>
<tr> <td>155</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0155.rst">addrv2 message</a></td> <td>Proposed</td>
<tr> <td>173</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0173.rst">Bech32 Format</a></td> <td>Final</td>
<tr> <td>200</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0200.rst">Network Upgrade Mechanism</a></td> <td>Final</td>
<tr> <td>201</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0201.rst">Network Peer Management for Overwinter</a></td> <td>Final</td>
<tr> <td>202</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0202.rst">Version 3 Transaction Format for Overwinter</a></td> <td>Final</td>
<tr> <td>203</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0203.rst">Transaction Expiry</a></td> <td>Final</td>
<tr> <td><span class="reserved">204</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0204.rst">Zcash P2P Network Protocol</a></td> <td>Reserved</td>
<tr> <td>205</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0205.rst">Deployment of the Sapling Network Upgrade</a></td> <td>Final</td>
<tr> <td>206</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0206.rst">Deployment of the Blossom Network Upgrade</a></td> <td>Final</td>
<tr> <td>207</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0207.rst">Funding Streams</a></td> <td>[Pre-NU6] Final, [NU6] Implemented (zcashd and zebrad)</td>
<tr> <td>208</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0208.rst">Shorter Block Target Spacing</a></td> <td>Final</td>
<tr> <td>209</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0209.rst">Prohibit Negative Shielded Chain Value Pool Balances</a></td> <td>Final</td>
<tr> <td><strike>210</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-0210.rst">Sapling Anchor Deduplication within Transactions</a></strike></td> <td>Withdrawn</td>
<tr> <td>211</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0211.rst">Disabling Addition of New Value to the Sprout Chain Value Pool</a></td> <td>Final</td>
<tr> <td>212</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0212.rst">Allow Recipient to Derive Ephemeral Secret from Note Plaintext</a></td> <td>Final</td>
<tr> <td>213</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0213.rst">Shielded Coinbase</a></td> <td>Final</td>
<tr> <td>214</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0214.rst">Consensus rules for a Zcash Development Fund</a></td> <td>[Revision 0] Final, [Revision 1] Implemented (zcashd and zebrad)</td>
<tr> <td>215</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0215.rst">Explicitly Defining and Modifying Ed25519 Validation Rules</a></td> <td>Final</td>
<tr> <td>216</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0216.rst">Require Canonical Jubjub Point Encodings</a></td> <td>Final</td>
<tr> <td><span class="reserved">217</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0217.rst">Aggregate Signatures</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">219</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0219.rst">Disabling Addition of New Value to the Sapling Chain Value Pool</a></td> <td>Reserved</td>
<tr> <td><strike>220</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-0220.rst">Zcash Shielded Assets</a></strike></td> <td>Withdrawn</td>
<tr> <td>221</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0221.rst">FlyClient - Consensus-Layer Changes</a></td> <td>Final</td>
<tr> <td>222</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0222.rst">Transparent Zcash Extensions</a></td> <td>Draft</td>
<tr> <td>224</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0224.rst">Orchard Shielded Protocol</a></td> <td>Final</td>
<tr> <td>225</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0225.rst">Version 5 Transaction Format</a></td> <td>Final</td>
<tr> <td>226</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0226.rst">Transfer and Burn of Zcash Shielded Assets</a></td> <td>Draft</td>
<tr> <td>227</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0227.rst">Issuance of Zcash Shielded Assets</a></td> <td>Draft</td>
<tr> <td><span class="reserved">228</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0228.rst">Asset Swaps for Zcash Shielded Assets</a></td> <td>Reserved</td>
<tr> <td>230</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0230.rst">Version 6 Transaction Format</a></td> <td>Draft</td>
<tr> <td>231</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0231.md">Memo Bundles</a></td> <td>Draft</td>
<tr> <td>233</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0233.md">Network Sustainability Mechanism: Burning</a></td> <td>Draft</td>
<tr> <td>234</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0234.md">Network Sustainability Mechanism: Issuance Smoothing</a></td> <td>Draft</td>
<tr> <td>235</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0235.md">Burn 60% of Transaction Fees</a></td> <td>Draft</td>
<tr> <td>236</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0236.rst">Blocks should balance exactly</a></td> <td>Implemented (zcashd and zebrad)</td>
<tr> <td>239</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0239.rst">Relay of Version 5 Transactions</a></td> <td>Final</td>
<tr> <td>243</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0243.rst">Transaction Signature Validation for Sapling</a></td> <td>Final</td>
<tr> <td>244</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0244.rst">Transaction Identifier Non-Malleability</a></td> <td>Final</td>
<tr> <td>245</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0245.rst">Transaction Identifier Digests & Signature Validation for Transparent Zcash Extensions</a></td> <td>Draft</td>
<tr> <td>250</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0250.rst">Deployment of the Heartwood Network Upgrade</a></td> <td>Final</td>
<tr> <td>251</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0251.rst">Deployment of the Canopy Network Upgrade</a></td> <td>Final</td>
<tr> <td>252</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0252.rst">Deployment of the NU5 Network Upgrade</a></td> <td>Final</td>
<tr> <td>253</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0253.md">Deployment of the NU6 Network Upgrade</a></td> <td>Implemented (zcashd and zebrad)</td>
<tr> <td>254</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0254.md">Deployment of the NU7 Network Upgrade</a></td> <td>Draft</td>
<tr> <td>300</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0300.rst">Cross-chain Atomic Transactions</a></td> <td>Proposed</td>
<tr> <td>301</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0301.rst">Zcash Stratum Protocol</a></td> <td>Final</td>
<tr> <td>302</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0302.rst">Standardized Memo Field Format</a></td> <td>Draft</td>
<tr> <td><span class="reserved">303</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0303.rst">Sprout Payment Disclosure</a></td> <td>Reserved</td>
<tr> <td>304</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0304.rst">Sapling Address Signatures</a></td> <td>Draft</td>
<tr> <td><span class="reserved">305</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0305.rst">Best Practices for Hardware Wallets supporting Sapling</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">306</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0306.rst">Security Considerations for Anchor Selection</a></td> <td>Reserved</td>
<tr> <td>307</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0307.rst">Light Client Protocol for Payment Detection</a></td> <td>Draft</td>
<tr> <td>308</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0308.rst">Sprout to Sapling Migration</a></td> <td>Final</td>
<tr> <td><span class="reserved">309</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0309.rst">Blind Off-chain Lightweight Transactions (BOLT)</a></td> <td>Reserved</td>
<tr> <td>310</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0310.rst">Security Properties of Sapling Viewing Keys</a></td> <td>Draft</td>
<tr> <td>311</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0311.rst">Zcash Payment Disclosures</a></td> <td>Draft</td>
<tr> <td>312</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0312.rst">FROST for Spend Authorization Multisignatures</a></td> <td>Draft</td>
<tr> <td><strike>313</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-0313.rst">Reduce Conventional Transaction Fee to 1000 zatoshis</a></strike></td> <td>Obsolete</td>
<tr> <td><span class="reserved">314</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0314.rst">Privacy upgrades to the Zcash light client protocol</a></td> <td>Reserved</td>
<tr> <td>315</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0315.rst">Best Practices for Wallet Implementations</a></td> <td>Draft</td>
<tr> <td>316</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0316.rst">Unified Addresses and Unified Viewing Keys</a></td> <td>[Revision 0] Final, [Revision 1] Proposed</td>
<tr> <td>317</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0317.rst">Proportional Transfer Fee Mechanism</a></td> <td>Active</td>
<tr> <td><span class="reserved">318</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0318.rst">Associated Payload Encryption</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">319</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0319.rst">Options for Shielded Pool Retirement</a></td> <td>Reserved</td>
<tr> <td>320</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0320.rst">Defining an Address Type to which funds can only be sent from Transparent Addresses</a></td> <td>Proposed</td>
<tr> <td>321</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0321.rst">Payment Request URIs</a></td> <td>Proposed</td>
<tr> <td><span class="reserved">322</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0322.rst">Generic Signed Message Format</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">323</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0323.rst">Specification of getblocktemplate for Zcash</a></td> <td>Reserved</td>
<tr> <td>324</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0324.rst">URI-Encapsulated Payments</a></td> <td>Draft</td>
<tr> <td><span class="reserved">332</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0332.rst">Wallet Recovery from zcashd HD Seeds</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">339</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0339.rst">Wallet Recovery Words</a></td> <td>Reserved</td>
<tr> <td>400</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0400.rst">Wallet.dat format</a></td> <td>Draft</td>
<tr> <td>401</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-0401.rst">Addressing Mempool Denial-of-Service</a></td> <td>Active</td>
<tr> <td><span class="reserved">402</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0402.rst">New Wallet Database Format</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">403</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0403.rst">Verification Behaviour of zcashd</a></td> <td>Reserved</td>
<tr> <td><span class="reserved">416</span></td> <td class="left"><a class="reserved" href="https://github.com/zcash/zips/blob/main/zips/zip-0416.rst">Support for Unified Addresses in zcashd</a></td> <td>Reserved</td>
<tr> <td><strike>1001</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1001.rst">Keep the Block Distribution as Initially Defined — 90% to Miners</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1002</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1002.rst">Opt-in Donation Feature</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1003</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1003.rst">20% Split Evenly Between the ECC and the Zcash Foundation, and a Voting System Mandate</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1004</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1004.rst">Miner-Directed Dev Fund</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1005</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1005.rst">Zcash Community Funding System</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1006</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1006.rst">Development Fund of 10% to a 2-of-3 Multisig with Community-Involved Third Entity</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1007</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1007.rst">Enforce Development Fund Commitments with a Legal Charter</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1008</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1008.rst">Fund ECC for Two More Years</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1009</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1009.rst">Five-Entity Strategic Council</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1010</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1010.rst">Compromise Dev Fund Proposal With Diverse Funding Streams</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1011</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1011.rst">Decentralize the Dev Fee</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1012</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1012.rst">Dev Fund to ECC + ZF + Major Grants</a></strike></td> <td>Obsolete</td>
<tr> <td><strike>1013</strike></td> <td class="left"><strike><a href="https://github.com/zcash/zips/blob/main/zips/zip-1013.rst">Keep It Simple, Zcashers: 10% to ECC, 10% to ZF</a></strike></td> <td>Obsolete</td>
<tr> <td>1014</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-1014.rst">Establishing a Dev Fund for ECC, ZF, and Major Grants</a></td> <td>Active</td>
<tr> <td>1015</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-1015.rst">Block Subsidy Allocation for Non-Direct Development Funding</a></td> <td>Proposed</td>
<tr> <td>2001</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2001.rst">Lockbox Funding Streams</a></td> <td>Implemented (zcashd and zebrad)</td>
<tr> <td>2002</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2002.rst">Explicit Fees</a></td> <td>Draft</td>
<tr> <td>2003</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2003.rst">Disallow version 4 transactions</a></td> <td>Draft</td>
<tr> <td>2004</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-2004.rst">Remove the dependency of consensus on note encryption</a></td> <td>Draft</td>
<tr> <td>guide-markdown</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-guide-markdown.md">{Something Short and To the Point}</a></td> <td>Draft</td>
<tr> <td>guide</td> <td class="left"><a href="https://github.com/zcash/zips/blob/main/zips/zip-guide.rst">{Something Short and To the Point}</a></td> <td>Draft</td>

ZIP Title Status