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137 lines
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<title>README: Specifications and Zcash Improvement Proposals</title>
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<meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="css/style.css"></head>
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<body>
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<section>
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<!-- Title: Specifications and Zcash Improvement Proposals -->
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<section id="what-are-zips"><h2><span class="section-heading">What are ZIPs?</span><span class="section-anchor"> <a rel="bookmark" href="#what-are-zips"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
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<p>Zcash Improvement Proposals (ZIPs) are the way to:</p>
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<ul>
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<li>propose new features for the <a href="https://z.cash/">Zcash cryptocurrency</a> and their rationale,</li>
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<li>specify the implementation details of the feature,</li>
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<li>collect community input on the proposal, and</li>
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<li>document design decisions.</li>
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</ul>
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</section>
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<section id="contributing"><h2><span class="section-heading">Contributing</span><span class="section-anchor"> <a rel="bookmark" href="#contributing"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
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<p>The authors of a ZIP are responsible for building consensus within the community and documenting / addressing dissenting opinions.</p>
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<p>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 <a href="https://discord.gg/kdjfvps">ZcashCommunity Discord chat</a> to talk about your idea.</p>
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<p>Participation in the Zcash project is subject to a <a href="https://github.com/zcash/zcash/blob/master/code_of_conduct.md">Code of Conduct</a>.</p>
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<p>The Zcash protocol is documented in its <a href="protocol/protocol.pdf">Protocol Specification</a>.</p>
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<p>To start contributing, first read <a href="zip-0000">ZIP 0</a> which documents the ZIP process. Then clone <a href="https://github.com/zcash/zips">this repo</a> from GitHub, and start adding your draft ZIP, formatted either as reStructuredText or as Markdown.</p>
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<p>For example, if using reStructuredText, use a filename matching <code>draft-*.rst</code>. Use <code>make</code> to check that you are using correct <a href="https://docutils.sourceforge.io/rst.html">reStructuredText</a> or <a href="https://pandoc.org/MANUAL.html#pandocs-markdown">Markdown</a> syntax, and double-check the generated <code>draft-*.html</code> file before filing a Pull Request.</p>
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</section>
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<section id="nu5-zips"><h2><span class="section-heading">NU5 ZIPs</span><span class="section-anchor"> <a rel="bookmark" href="#nu5-zips"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
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<p>This is the list of ZIPs relevant to the NU5 Upgrade, which <a href="https://z.cash/upgrade/nu5/">activated on 31st May 2022</a>:</p>
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<ul>
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<li><a href="zip-0032">ZIP 32: Shielded Hierarchical Deterministic Wallets</a> (updated)</li>
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<li><a href="zip-0203">ZIP 203: Transaction Expiry</a> (updated)</li>
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<li><a href="zip-0209">ZIP 209: Prohibit Negative Shielded Chain Value Pool Balances</a> (updated)</li>
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<li><a href="zip-0212">ZIP 212: Allow Recipient to Derive Ephemeral Secret from Note Plaintext</a> (updated)</li>
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<li><a href="zip-0213">ZIP 213: Shielded Coinbase</a> (updated)</li>
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<li><a href="zip-0216">ZIP 216: Require Canonical Jubjub Point Encodings</a></li>
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<li><a href="zip-0221">ZIP 221: FlyClient - Consensus-Layer Changes</a> (updated)</li>
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<li><a href="zip-0224">ZIP 224: Orchard Shielded Protocol</a></li>
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<li><a href="zip-0225">ZIP 225: Version 5 Transaction Format</a></li>
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<li><a href="zip-0239">ZIP 239: Relay of Version 5 Transactions</a></li>
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<li><a href="zip-0244">ZIP 244: Transaction Identifier Non-Malleability</a></li>
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<li><a href="zip-0252">ZIP 252: Deployment of the NU5 Network Upgrade</a></li>
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<li><a href="zip-0316">ZIP 316: Unified Addresses and Unified Viewing Keys</a></li>
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<li><a href="zip-0401">ZIP 401: Addressing Mempool Denial-of-Service</a> (clarified)</li>
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</ul>
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</section>
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<section id="license"><h2><span class="section-heading">License</span><span class="section-anchor"> <a rel="bookmark" href="#license"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
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<p>Unless otherwise stated in this repository’s individual files, the contents of this repository are released under the terms of the MIT license. See <a href="COPYING">COPYING</a> for more information or see <a href="https://opensource.org/licenses/MIT">https://opensource.org/licenses/MIT</a> .</p>
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</section>
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<section id="index-of-zips"><h2><span class="section-heading">Index of ZIPs</span><span class="section-anchor"> <a rel="bookmark" href="#index-of-zips"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
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<embed><table>
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<tr> <th>ZIP</th> <th>Title</th> <th>Status</th> </tr>
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<tr> <td>0</td> <td class="left"><a href="zip-0000">ZIP Process</a></td> <td>Active</td>
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<tr> <td><span class="reserved">1</span></td> <td class="left"><a class="reserved" href="zip-0001">Network Upgrade Policy and Scheduling</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">2</span></td> <td class="left"><a class="reserved" href="zip-0002">Design Considerations for Network Upgrades</a></td> <td>Reserved</td>
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<tr> <td>32</td> <td class="left"><a href="zip-0032">Shielded Hierarchical Deterministic Wallets</a></td> <td>Final</td>
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<tr> <td><span class="reserved">76</span></td> <td class="left"><a class="reserved" href="zip-0076">Transaction Signature Validation before Overwinter</a></td> <td>Reserved</td>
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<tr> <td>143</td> <td class="left"><a href="zip-0143">Transaction Signature Validation for Overwinter</a></td> <td>Final</td>
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<tr> <td>155</td> <td class="left"><a href="zip-0155">addrv2 message</a></td> <td>Proposed</td>
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<tr> <td>173</td> <td class="left"><a href="zip-0173">Bech32 Format</a></td> <td>Final</td>
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<tr> <td>200</td> <td class="left"><a href="zip-0200">Network Upgrade Mechanism</a></td> <td>Final</td>
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<tr> <td>201</td> <td class="left"><a href="zip-0201">Network Peer Management for Overwinter</a></td> <td>Final</td>
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<tr> <td>202</td> <td class="left"><a href="zip-0202">Version 3 Transaction Format for Overwinter</a></td> <td>Final</td>
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<tr> <td>203</td> <td class="left"><a href="zip-0203">Transaction Expiry</a></td> <td>Final</td>
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<tr> <td><span class="reserved">204</span></td> <td class="left"><a class="reserved" href="zip-0204">Zcash P2P Network Protocol</a></td> <td>Reserved</td>
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<tr> <td>205</td> <td class="left"><a href="zip-0205">Deployment of the Sapling Network Upgrade</a></td> <td>Final</td>
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<tr> <td>206</td> <td class="left"><a href="zip-0206">Deployment of the Blossom Network Upgrade</a></td> <td>Final</td>
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<tr> <td>207</td> <td class="left"><a href="zip-0207">Funding Streams</a></td> <td>Final</td>
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<tr> <td>208</td> <td class="left"><a href="zip-0208">Shorter Block Target Spacing</a></td> <td>Final</td>
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<tr> <td>209</td> <td class="left"><a href="zip-0209">Prohibit Negative Shielded Chain Value Pool Balances</a></td> <td>Final</td>
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<tr> <td><strike>210</strike></td> <td class="left"><strike><a href="zip-0210">Sapling Anchor Deduplication within Transactions</a></strike></td> <td>Withdrawn</td>
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<tr> <td>211</td> <td class="left"><a href="zip-0211">Disabling Addition of New Value to the Sprout Chain Value Pool</a></td> <td>Final</td>
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<tr> <td>212</td> <td class="left"><a href="zip-0212">Allow Recipient to Derive Ephemeral Secret from Note Plaintext</a></td> <td>Final</td>
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<tr> <td>213</td> <td class="left"><a href="zip-0213">Shielded Coinbase</a></td> <td>Final</td>
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<tr> <td>214</td> <td class="left"><a href="zip-0214">Consensus rules for a Zcash Development Fund</a></td> <td>Final</td>
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<tr> <td>215</td> <td class="left"><a href="zip-0215">Explicitly Defining and Modifying Ed25519 Validation Rules</a></td> <td>Final</td>
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<tr> <td>216</td> <td class="left"><a href="zip-0216">Require Canonical Jubjub Point Encodings</a></td> <td>Final</td>
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<tr> <td><span class="reserved">217</span></td> <td class="left"><a class="reserved" href="zip-0217">Aggregate Signatures</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">219</span></td> <td class="left"><a class="reserved" href="zip-0219">Disabling Addition of New Value to the Sapling Chain Value Pool</a></td> <td>Reserved</td>
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<tr> <td><strike>220</strike></td> <td class="left"><strike><a href="zip-0220">Zcash Shielded Assets</a></strike></td> <td>Withdrawn</td>
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<tr> <td>221</td> <td class="left"><a href="zip-0221">FlyClient - Consensus-Layer Changes</a></td> <td>Final</td>
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<tr> <td>222</td> <td class="left"><a href="zip-0222">Transparent Zcash Extensions</a></td> <td>Draft</td>
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<tr> <td>224</td> <td class="left"><a href="zip-0224">Orchard Shielded Protocol</a></td> <td>Final</td>
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<tr> <td>225</td> <td class="left"><a href="zip-0225">Version 5 Transaction Format</a></td> <td>Final</td>
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<tr> <td><span class="reserved">226</span></td> <td class="left"><a class="reserved" href="zip-0226">Zcash Shielded Assets - Transfers and Burns</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">227</span></td> <td class="left"><a class="reserved" href="zip-0227">Zcash Shielded Assets - Issuance</a></td> <td>Reserved</td>
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<tr> <td>239</td> <td class="left"><a href="zip-0239">Relay of Version 5 Transactions</a></td> <td>Final</td>
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<tr> <td>243</td> <td class="left"><a href="zip-0243">Transaction Signature Validation for Sapling</a></td> <td>Final</td>
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<tr> <td>244</td> <td class="left"><a href="zip-0244">Transaction Identifier Non-Malleability</a></td> <td>Final</td>
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<tr> <td>245</td> <td class="left"><a href="zip-0245">Transaction Identifier Digests & Signature Validation for Transparent Zcash Extensions</a></td> <td>Draft</td>
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<tr> <td>250</td> <td class="left"><a href="zip-0250">Deployment of the Heartwood Network Upgrade</a></td> <td>Final</td>
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<tr> <td>251</td> <td class="left"><a href="zip-0251">Deployment of the Canopy Network Upgrade</a></td> <td>Final</td>
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<tr> <td>252</td> <td class="left"><a href="zip-0252">Deployment of the NU5 Network Upgrade</a></td> <td>Final</td>
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<tr> <td>300</td> <td class="left"><a href="zip-0300">Cross-chain Atomic Transactions</a></td> <td>Proposed</td>
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<tr> <td>301</td> <td class="left"><a href="zip-0301">Zcash Stratum Protocol</a></td> <td>Final</td>
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<tr> <td>302</td> <td class="left"><a href="zip-0302">Standardized Memo Field Format</a></td> <td>Draft</td>
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<tr> <td><span class="reserved">303</span></td> <td class="left"><a class="reserved" href="zip-0303">Sprout Payment Disclosure</a></td> <td>Reserved</td>
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<tr> <td>304</td> <td class="left"><a href="zip-0304">Sapling Address Signatures</a></td> <td>Draft</td>
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<tr> <td><span class="reserved">305</span></td> <td class="left"><a class="reserved" href="zip-0305">Best Practices for Hardware Wallets supporting Sapling</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">306</span></td> <td class="left"><a class="reserved" href="zip-0306">Security Considerations for Anchor Selection</a></td> <td>Reserved</td>
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<tr> <td>307</td> <td class="left"><a href="zip-0307">Light Client Protocol for Payment Detection</a></td> <td>Draft</td>
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<tr> <td>308</td> <td class="left"><a href="zip-0308">Sprout to Sapling Migration</a></td> <td>Final</td>
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<tr> <td><span class="reserved">309</span></td> <td class="left"><a class="reserved" href="zip-0309">Blind Off-chain Lightweight Transactions (BOLT)</a></td> <td>Reserved</td>
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<tr> <td>310</td> <td class="left"><a href="zip-0310">Security Properties of Sapling Viewing Keys</a></td> <td>Draft</td>
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<tr> <td><span class="reserved">311</span></td> <td class="left"><a class="reserved" href="zip-0311">Sapling Payment Disclosure</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">312</span></td> <td class="left"><a class="reserved" href="zip-0312">Shielded Multisignatures using FROST</a></td> <td>Reserved</td>
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<tr> <td>313</td> <td class="left"><a href="zip-0313">Reduce Conventional Transaction Fee to 1000 zatoshis</a></td> <td>Active</td>
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<tr> <td><span class="reserved">314</span></td> <td class="left"><a class="reserved" href="zip-0314">Privacy upgrades to the Zcash light client protocol</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">315</span></td> <td class="left"><a class="reserved" href="zip-0315">Best Practices for Wallet Handling of Multiple Pools</a></td> <td>Reserved</td>
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<tr> <td>316</td> <td class="left"><a href="zip-0316">Unified Addresses and Unified Viewing Keys</a></td> <td>Final</td>
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<tr> <td>321</td> <td class="left"><a href="zip-0321">Payment Request URIs</a></td> <td>Proposed</td>
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<tr> <td><span class="reserved">322</span></td> <td class="left"><a class="reserved" href="zip-0322">Generic Signed Message Format</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">323</span></td> <td class="left"><a class="reserved" href="zip-0323">Specification of getblocktemplate for Zcash</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">339</span></td> <td class="left"><a class="reserved" href="zip-0339">Wallet Recovery Words</a></td> <td>Reserved</td>
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<tr> <td>400</td> <td class="left"><a href="zip-0400">Wallet.dat format</a></td> <td>Draft</td>
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<tr> <td>401</td> <td class="left"><a href="zip-0401">Addressing Mempool Denial-of-Service</a></td> <td>Final</td>
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<tr> <td><span class="reserved">402</span></td> <td class="left"><a class="reserved" href="zip-0402">New Wallet Database Format</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">403</span></td> <td class="left"><a class="reserved" href="zip-0403">Verification Behaviour of zcashd</a></td> <td>Reserved</td>
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<tr> <td><span class="reserved">416</span></td> <td class="left"><a class="reserved" href="zip-0416">Support for Unified Addresses in zcashd</a></td> <td>Reserved</td>
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<tr> <td><strike>1001</strike></td> <td class="left"><strike><a href="zip-1001">Keep the Block Distribution as Initially Defined — 90% to Miners</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1002</strike></td> <td class="left"><strike><a href="zip-1002">Opt-in Donation Feature</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1003</strike></td> <td class="left"><strike><a href="zip-1003">20% Split Evenly Between the ECC and the Zcash Foundation, and a Voting System Mandate</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1004</strike></td> <td class="left"><strike><a href="zip-1004">Miner-Directed Dev Fund</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1005</strike></td> <td class="left"><strike><a href="zip-1005">Zcash Community Funding System</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1006</strike></td> <td class="left"><strike><a href="zip-1006">Development Fund of 10% to a 2-of-3 Multisig with Community-Involved Third Entity</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1007</strike></td> <td class="left"><strike><a href="zip-1007">Enforce Development Fund Commitments with a Legal Charter</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1008</strike></td> <td class="left"><strike><a href="zip-1008">Fund ECC for Two More Years</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1009</strike></td> <td class="left"><strike><a href="zip-1009">Five-Entity Strategic Council</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1010</strike></td> <td class="left"><strike><a href="zip-1010">Compromise Dev Fund Proposal With Diverse Funding Streams</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1011</strike></td> <td class="left"><strike><a href="zip-1011">Decentralize the Dev Fee</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1012</strike></td> <td class="left"><strike><a href="zip-1012">Dev Fund to ECC + ZF + Major Grants</a></strike></td> <td>Obsolete</td>
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<tr> <td><strike>1013</strike></td> <td class="left"><strike><a href="zip-1013">Keep It Simple, Zcashers: 10% to ECC, 10% to ZF</a></strike></td> <td>Obsolete</td>
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<tr> <td>1014</td> <td class="left"><a href="zip-1014">Establishing a Dev Fund for ECC, ZF, and Major Grants</a></td> <td>Active</td>
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<tr> <td>guide</td> <td class="left"><a href="zip-guide">{Something Short and To the Point}</a></td> <td>Draft</td>
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</table></embed></section>
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