Update Zcashd End-of-Life information (6.20.0 halted at block 3417100)#45
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Zcashd reached End-of-Life. The final release, 6.20.0, hit its automatic
End-of-Support halt at block height 3417100 (mined July 18th 2026, 22:51 UTC),
ahead of the NU6.3 ("Ironwood") mainnet activation which it does not support.
- Rewrite zcashd_cycle.mdx: add EOL notice, convert the metronome section to
past tense, and replace outdated EOS/NU7 projections with the actual outcome.
- index.mdx: deprecation is now complete rather than "targeted for end of 2025".
- resources.mdx: Zcashd legacy blurb now reflects EOL and Zebra-only consensus.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
# Conflicts: # src/content/zcash-z3/index.mdx # src/content/zcash-z3/resources.mdx # src/content/zcash-z3/zcashd_cycle.mdx
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Summary
Zcashd has reached End-of-Life. Its final release, 6.20.0, hit its automatic End-of-Support halt at block height 3417100 — mined July 18th 2026 at 22:51 UTC (
00000000001d20ddc7ae13b910c1a12929f753ae779a3c62207e53bc0d30d52f) — and will not restart. Zcashd does not support the NU6.3 ("Ironwood") network upgrade activating on mainnet ~July 28th 2026, so Zcash consensus now runs on the Rust-based Z3 stack (Zebra + Zaino + Zallet).This PR replaces the site's outdated future-tense projections with the confirmed outcome.
Changes
zcash-z3/zcashd_cycle.mdx— Added a prominent EOL notice, converted the "metronome" explanation to past tense, and replaced the outdated EOS/NU7 projections (Jan 21 2026 EOS, "May 2026 completion window", "NU7 targeted for Sept 2026") with a "The final cycle" section describing the actual 6.20.0 halt, block height/date, the NU6.3 relationship, and the Zebra/Zallet migration path.zcash-z3/index.mdx— Deprecation is now complete rather than "targeted for end of 2025".zcash-z3/resources.mdx— Legacy (Zcashd) blurb now reflects EOL and Zebra-only consensus (corrected NU7 → NU6.3).Facts sourced from the official Zcashd End-of-Life notice and the on-chain block 3417100 data.
Notes
dashboard.mdxproject trackers (Zallet alpha builds, Zaino status, etc.) were left untouched — they may now be stale post-EOL and can be updated separately.Closes #44
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