fix(pepper-sync): retain ZIP 318 anchor checkpoints - #2750
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Aug 28, 2026
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we also need to check spend migrations only use boundary anchors as only these are retained. im not sure what happens in the chain tip i.e. top 100 blocks etc.
…timeout The test proves more Orchard spends than fit one split transaction and has always run near nextest's default 600-second ceiling. The suite speedups merged in #2741 reshuffled the schedule so it now overlaps the other long-chain heavies: the last green dev run passed it at 571.8 seconds, and every CI run since 2026-08-26 kills it at 600. Listing it in the existing long-chain heavies override raises its limit to 1200 seconds in both profiles, beside its sibling drain_chunks_a_fragmented_wallet. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
dorianvp
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Aug 29, 2026
…kpoints for shardtree pruning
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Sends of exactly 1, 2, 5 × 10^n ZEC failed with
AnchorNotFound: the canonical-crossing path anchors to a ZIP 318 grid boundary 147–290 blocks behind the tip, but pepper-sync retained only the newest 100 checkpoints, and theanchor_computableguard only checked scan completeness, so the doomed attempt was not rejected until after proposal acceptance.anchor_is_computablenow also requires a checkpoint at the anchor height, so a canonical attempt at a pruned boundary degrades to the ordinary send path.ANCHOR_AGE_CAP + 2intervals from the Ironwood activation), re-derive the pins at sync start, exempt pinned checkpoints from the newest-100 serialization cap, and iterate the full checkpoint count when truncating to the next checkpoint.Wallets with already-pruned boundaries send via the ordinary path immediately; canonical crossings resume once sync passes the next grid boundary.
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