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Update Zcashd End-of-Life information (6.20.0 halted at block 3417100) #45

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Merged
pacu merged 2 commits into from
Jul 19, 2026
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Update Zcashd End-of-Life information (6.20.0 halted at block 3417100) #45

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6eba997
Update Zcashd End-of-Life info: 6.20.0 halted at block 3417100
pacu Jul 19, 2026
91011d0
Merge remote-tracking branch 'origin/main' into zcashd-eol
pacu Jul 19, 2026
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9 changes: 4 additions & 5 deletions src/components/ZcashdEolTimeline.jsx
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Expand Up @@ -25,13 +25,12 @@ const MILESTONES = [
detail: 'NU6.3-ready node releases are published for mainnet.',
},
{
ts: Date.UTC(2026, 6, 18),
date: '~July 18th, 2026',
estimated: true,
ts: Date.UTC(2026, 6, 18, 22, 51, 43),
date: 'July 18th, 2026',
title: 'zcashd End-of-Support halt',
detail:
'At mainnet block 3,417,100 every remaining zcashd binary ' +
'automatically shuts down and refuses to restart.',
'At mainnet block 3,417,100 (mined 22:51 UTC) every remaining zcashd ' +
'binary shut down and refused to restart.',
},
{
ts: Date.UTC(2026, 6, 28),
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16 changes: 9 additions & 7 deletions src/content/zcash-z3/index.mdx
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Expand Up @@ -18,8 +18,10 @@ Zaino, an indexer developed by ZingoLabs. ZODL would be in charge of
developing the full-node wallet that would connect to Zaino and Zebra, called
Zallet.

Zcashd deprecation is a cross-team ecosystem-wide effort which is targeted for
end of July of 2026.
Zcashd deprecation was a cross-team ecosystem-wide effort, and it is now
complete: the final Zcashd release, **6.20.0**, reached its End-of-Life halt at
block 3417100 on July 18th 2026, and Zcash consensus now runs on the Z3 stack.
See the [Zcashd End-of-Life](/zcash-z3/zcashd_cycle) page for details.

## Zcashd Deprecation is now Z^3

Expand All @@ -32,11 +34,11 @@ contributing section.

# Migration Guide: moving off Zcashd

> ## ⚠️ Zcashd is shutting down
> ## ⚠️ Zcashd has shut down
>
> `zcashd` is **deprecated**, will **not** support NU6.3, and its
> **End-of-Support halt** is estimated for **July 18th 2026** at block height
> 3417100, after which every `zcashd` node automatically shuts down.
> `zcashd` is **deprecated** and does **not** support NU6.3. Its
> **End-of-Support halt** occurred at block height 3417100, mined on **July 18th
> 2026 (22:51 UTC)**, after which every `zcashd` node automatically shuts down.
> See the [Zcashd End-of-Life page](/zcash-z3/zcashd_cycle) for the full timeline.

<ZcashdEolTimeline />
Expand Down Expand Up @@ -104,7 +106,7 @@ ready today.**

## If you rely on the Zcashd wallet CLI

The Zcashd wallet is deprecated and will cease to run on July 18th 2026.
The Zcashd wallet is deprecated and stopped running on July 18th 2026.

You should migrate to [Zallet](https://github.com/zcash/zallet), the replacement
for the Zcashd full-node wallet, developed entirely in RustLang by
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10 changes: 6 additions & 4 deletions src/content/zcash-z3/resources.mdx
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Expand Up @@ -49,10 +49,12 @@ the entire blockchain from scratch.
## Legacy (Zcashd)

Zcashd is the originary consensus node for Zcash. Forked from Bitcoin-core in 2015,
Zcashd has gone through six Network Upgrades and has been the main consensus node
since the Zcash network was deployed in October 28th 2016. It's currently being
deprecated and will soon be replaced by Zebra when Network Upgrade 6.3 (NU6.3) is
deployed on July 28th, 2026.
Zcashd has gone through several Network Upgrades and was the main consensus node
since the Zcash network was deployed in October 28th 2016. It has now reached
End-of-Life: the final release, 6.20.0, halted at block 3417100 on July 18th 2026,
ahead of the NU6.3 ("Ironwood") network upgrade that it does not support, which is
deployed on July 28th, 2026. Zcash consensus now runs on Zebra. See the
[Zcashd End-of-Life notice](https://zcash.github.io/zcash/user/end-of-life.html).

ZODL Engineers will be posting updates on this website:
https://z.cash/support/zcashd-deprecation/
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15 changes: 8 additions & 7 deletions src/content/zcash-z3/zcashd_cycle.mdx
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Expand Up @@ -2,15 +2,16 @@ import { ZcashdEolTimeline } from '../../components/ZcashdEolTimeline'

# Zcashd End-of-Life

> ## ⚠️ `zcashd` is reaching its End of Life
> ## ⚠️ `zcashd` has reached its End of Life
>
> `zcashd` is **deprecated** and will **not** support NU6.3.
> `zcashd` is **deprecated** and does **not** support NU6.3.
> **If you do not need the `zcashd` wallet, migrate to [Zebra](https://github.com/ZcashFoundation/zebra) now.**
> If you depend on the `zcashd` wallet, start testing [Zallet](https://zcash.github.io/zallet/)
> migrating your `wallet.dat` as soon as possible. The binary's **End-of-Support halt** is
> estimated for **July 18th 2026** at block height 3417100, after which every `zcashd` node
> automatically shuts down.
> If you depend on the `zcashd` wallet, migrate your `wallet.dat` to
> [Zallet](https://zcash.github.io/zallet/) as soon as possible. The binary's
> **End-of-Support halt** occurred at block height 3417100, mined on **July 18th
> 2026 at 22:51 UTC**, after which every `zcashd` node automatically shuts down
> and refuses to restart.

See [Zcash'd book chapter](https://zcash.github.io/zcash/user/end-of-life.html) on Zcashd EOL.

<ZcashdEolTimeline />
<ZcashdEolTimeline />
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