Add ZIP 256: Deployment of Consensus Bug Fixes Between NU6.1 and NU6.2#1295
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Add ZIP 256: Deployment of Consensus Bug Fixes Between NU6.1 and NU6.2#1295daira wants to merge 1 commit into
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ZIP number 256 requested. |
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I agree on using zip 256 for this! |
Retrospectively documents the consensus and denial-of-service bug fixes deployed between the NU6.1 and NU6.2 activations: zcashd v6.12.0 to v6.12.4 and zebra v4.2.0 to v4.5.1. Includes the soft-fork exclusion of Orchard rk = 𝓞_ℙ, conformance fixes restoring zcashd/zebra agreement, and DoS/crash hardening. The Orchard counterfeiting mitigation and NU6.2 itself are documented separately in ZIP 257. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Signed-off-by: Daira-Emma Hopwood <daira@jacaranda.org>
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- Title -> "Version 6 Transaction Format"; drop the fee field; coinbase empty-Orchard-bundle note; reword the Orchard/Ironwood tree/nullifier-set separation. - Sighash: extend the v6 anchor move (effecting -> auth data) to Sapling as well as Orchard and Ironwood; full txid/auth digest trees and the per-node personalization table (with _v6 personalizations where the encoding changed). - Add a "Changes to ZIP 221" section: the Ironwood chain-history MMR node fields (hashEarliest/LatestIronwoodRoot, nIronwoodTxCount) [NU6.3 onward], mirroring the NU5 Orchard fields. - Add a ZIP 209 intro citing [^zip-0209]; add the [^zip-0221], [^zip-0252], [^zip-0244-txiddigest], and [^zip-0244-authorizingdatacommitment] references. - Fix the #openissues internal anchor (MMD strips hyphens). The [0, MAX_MONEY] ZIP 209 change is left as a TODO pending the ZIP 256 update in zcash#1295. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Signed-off-by: Daira-Emma Hopwood <daira@jacaranda.org>
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- Title -> "Version 6 Transaction Format"; drop the fee field; coinbase empty-Orchard-bundle note; reword the Orchard/Ironwood tree/nullifier-set separation. - Sighash: extend the v6 anchor move (effecting -> auth data) to Sapling as well as Orchard and Ironwood; full txid/auth digest trees and the per-node personalization table (with _v6 personalizations where the encoding changed). - Add a "Changes to ZIP 221" section: the Ironwood chain-history MMR node fields (hashEarliest/LatestIronwoodRoot, nIronwoodTxCount) [NU6.3 onward], mirroring the NU5 Orchard fields. - Add a ZIP 209 intro citing [^zip-0209]; add the [^zip-0221], [^zip-0252], [^zip-0244-txiddigest], and [^zip-0244-authorizingdatacommitment] references. - Fix the #openissues internal anchor (MMD strips hyphens). The [0, MAX_MONEY] ZIP 209 change is left as a TODO pending the ZIP 256 update in zcash#1295. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Signed-off-by: Daira-Emma Hopwood <daira@jacaranda.org>
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Retrospectively documents the consensus and denial-of-service bug fixes deployed between the NU6.1 and NU6.2 activations: zcashd v6.12.0 to v6.12.4 and zebra v4.2.0 to v4.5.1.
Includes the soft-fork exclusion of Orchard$\mathsf{rk} = \mathcal{O}_{\mathbb{P}}$ , conformance fixes restoring zcashd/zebra agreement, and DoS/crash hardening. The Orchard counterfeiting mitigation and NU6.2 itself will be documented separately in another ZIP.
closes #1294