02 RECORD — 2013 to 2026 - one spine - filter by strand

From Zerocash to the ETF

Launch, funding, governance, leadership, exploits, upgrades, market and the promotion network on one axis. The governance strand alone runs Founders' Reward to ZIP 1014 to ZIP 1015 to ZIP 1016 to the January 2026 walkout to a VC-funded lab whose engineers accounted for roughly 82 per cent of merged protocol and wallet repository changes in Ironwood. Dates are printed as the record states them: a row the sources date only to a month says so rather than borrowing a day from its sort key.

shielded share of supply — 2018 to 2026

Shielded share of ZEC supply, 2018 to 2026

Shielded share of ZEC supply, by reading date
Date	Share of supply	Source note
Aug 2018	3.6 per cent	Kappos et al.'s own measurement, in the paper that also found 0.3 per cent of transactions fully private
Aug 2021	7.4 per cent	ZECStats' five-years-ago baseline
Early 2024	8 per cent	-
Aug 2024	9 per cent	Forbes gives it as about 9 per cent, 1.48M of 16.3M ZEC
Start of 2025	11 per cent	-
Oct 2025	18 per cent	-
Nov 2025	23 per cent	-
May 2026	30 per cent	the peak, about 5M ZEC, and the only time the shielded share has reached 30 per cent
2026-08-22 (block 3,456,227)	26 to 26.8 per cent	CipherScan at block 3,456,227 gives 26.0 percent shielded; ZECStats reads 26.8 percent. Cite the range, roughly 26 to 27 percent. Coin Metrics adds that the growth was driven primarily by shielding and deshielding activity, and that fully shielded transfers remain a small share.

Nine and a half years after mainnet, the shielded share peaked at 30 per cent and fell back. The final reading is a band because its two sources disagree: CipherScan reads 26 per cent and ZECStats 26.8 per cent on the same day. The decline from the May 2026 peak spans the Orchard disclosure and the forced Ironwood migration; the corpus flags the fall and declines to attribute a cause, and so does this chart.

shielded-sharecite

claim: shielded-share
canonical: https://zecreveal.vercel.app/timeline#shielded-share
last verified: 2026-08-22
confidence: med

Kappos, Yousaf, Maller, Meiklejohn — An Empirical Analysis of Anonymity in Zcash, USENIX Security 2018 USENIX · accessed 2026-08-22
ZEC Stats (zecstats.com) ZEC Stats · accessed 2026-08-22
crypto.news — Why 30% of Zcash supply is in the shielded pool (29 May 2026) crypto.news · 2026-05-29 · accessed 2026-08-22
Forbes — How Satoshi Collaborator Zooko Wilcox Aims to Revive His Zombie Blockchain (8 Aug 2024) Forbes · 2025-03-12 · accessed 2026-08-22
Coin Metrics, State of the Network #338 Coin Metrics · 2025-11-08 · accessed 2026-08-22
CipherScan — Ironwood migration tracker CipherScan · 2026-08-22 · accessed 2026-08-22
CoinGecko — Zcash CoinGecko · accessed 2026-08-22
Coinglass ZEC derivatives coinglass.com · accessed 2026-08-22

C8cite

claim: C8
canonical: https://zecreveal.vercel.app/contradictions#C8
last verified: 2026-08-22
confidence: high

The Block — Zcash developers quit, form new company (7 Jan 2026) The Block · 2026-01-07 · accessed 2026-08-22
CoinDesk — ZODL raises $25M (9 Mar 2026) CoinDesk · 2026-03-09 · accessed 2026-08-22
Draft ecc-zbloc (Obsolete) Zcash Improvement Proposals · accessed 2026-08-22

the 82 per cent figure, its scope and its confidence

124 dated entries, 9 strands. Showing the 22 protocol rows; the year numerals stay, so a strand's silent years remain visible.

all124 exploit24 governance16 funding9 leadership8 protocol22 market12 regulatory8 network20 launch5

2013

2014

2015

2016

2017

2018

13 Apr 2018protocolPowers of Tau ceremony completes for Sapling Powers of Tau ceremony completes — nearly 90 participants — for Sapling parameters.T2018-04-13

T2018-04-13cite

claim: T2018-04-13
canonical: https://zecreveal.vercel.app/timeline#T2018-04-13
last verified: 2026-08-22
confidence: high

CoinDesk — Zcash Completes 'Powers of Tau' (13 Apr 2018) CoinDesk · 2018-04-13 · accessed 2026-08-22

26 Jun 2018, 01:37 UTCprotocolOverwinter network upgrade activates Overwinter — block 347,500.block 347,500T2018-06-26

T2018-06-26cite

claim: T2018-06-26
canonical: https://zecreveal.vercel.app/timeline#T2018-06-26
last verified: 2026-08-22
confidence: high

Zcash: Upgrade Overwinter Zcash · accessed 2026-08-22

28 Oct 2018protocol / exploitSapling activation with silent CVE-2019-7167 fix Sapling — block 419,200. Silently fixes CVE-2019-7167 (Groth16/BLS12-381). Publicly framed as a 90% proving-time / 97% memory improvement.block 419,200T2018-10-28

T2018-10-28cite

claim: T2018-10-28
canonical: https://zecreveal.vercel.app/timeline#T2018-10-28
last verified: 2026-08-22
confidence: high

ECC — Sapling Activation Complete Electric Coin Company · accessed 2026-08-22

27 Nov 2018protocolZIP 308 created for Sprout to Sapling migration ZIP 308 (Sprout→Sapling migration / turnstile) created — Daira-Emma Hopwood.T2018-11-27

T2018-11-27cite

claim: T2018-11-27
canonical: https://zecreveal.vercel.app/timeline#T2018-11-27
last verified: 2026-08-22
confidence: high

ZIP 308 (Sprout→Sapling migration) Zcash Improvement Proposals · accessed 2026-08-22

2019

2019year onlyprotocolSean Bowe discovers Halo recursive proofs Sean Bowe discovers Halo — recursive proofs without a trusted setup.T2019-01-01

T2019-01-01cite

claim: T2019-01-01
canonical: https://zecreveal.vercel.app/timeline#T2019-01-01
last verified: 2026-08-22
confidence: high

Wikipedia — Zcash Wikipedia · accessed 2026-08-22

25 Feb 2019protocolZIP 209 created for chain value pool balances ZIP 209 (prohibit out-of-range chain value pool balances — the turnstile) created — Sean Bowe, Daira-Emma Hopwood. Deployed without a network upgrade (v2.0.4 testnet, v2.0.5 mainnet).T2019-02-25

T2019-02-25cite

claim: T2019-02-25
canonical: https://zecreveal.vercel.app/timeline#T2019-02-25
last verified: 2026-08-22
confidence: high

ZIP 209, Prohibit Out-of-Range Chain Value Pool Balances Zcash Improvement Proposals · accessed 2026-08-22

31 Mar 2019protocolZIP 212 created for improved unlinkability ZIP 212 created — Sean Bowe, Daira-Emma Hopwood. Removes reliance on zk-SNARK soundness for diversified-address unlinkability.T2019-03-31

T2019-03-31cite

claim: T2019-03-31
canonical: https://zecreveal.vercel.app/timeline#T2019-03-31
last verified: 2026-08-22
confidence: high

ZIP 212 (note plaintext / ephemeral secret) Zcash Improvement Proposals · accessed 2026-08-22

11 Dec 2019, 21:51 UTCprotocolBlossom network upgrade activates Blossom — block 653,600.block 653,600T2019-12-11

T2019-12-11cite

claim: T2019-12-11
canonical: https://zecreveal.vercel.app/timeline#T2019-12-11
last verified: 2026-08-22
confidence: high

Zcash: Upgrade Blossom Zcash · accessed 2026-08-22

2020

16 Jul 2020, 10:56 UTCprotocolHeartwood network upgrade activates Heartwood — block 903,000 (Flyclient ZIP 221, shielded coinbase ZIP 213).block 903,000T2020-07-16

T2020-07-16cite

claim: T2020-07-16
canonical: https://zecreveal.vercel.app/timeline#T2020-07-16
last verified: 2026-08-22
confidence: high

Zcash: Upgrade Heartwood Zcash · accessed 2026-08-22

2021

2022

31 May 2022, 17:50:05 UTCprotocol / exploitNU5 activates Orchard and introduces CVE-2026-54496 NU5 — block 1,687,104. Orchard, Halo 2 (no trusted setup), unified addresses. Introduces CVE-2026-54496T2022-05-31

T2022-05-31cite

claim: T2022-05-31
canonical: https://zecreveal.vercel.app/timeline#T2022-05-31
last verified: 2026-08-22
confidence: high

Zcash: Upgrade NU5 Zcash · accessed 2026-08-22

15 Aug 2022protocolZIP 317 created (proportional fees) ZIP 317 created (proportional fees)T2022-08-15

T2022-08-15cite

claim: T2022-08-15
canonical: https://zecreveal.vercel.app/timeline#T2022-08-15
last verified: 2026-08-22
confidence: high

ZIP 317 (proportional transfer fee) Zcash Improvement Proposals · accessed 2026-08-22

2023

Apr 2023month onlyprotocolzcashd v5.5.0 makes ZIP 317 fees the default zcashd v5.5.0 makes ZIP 317 fees the defaultT2023-04-01

T2023-04-01cite

claim: T2023-04-01
canonical: https://zecreveal.vercel.app/timeline#T2023-04-01
last verified: 2026-08-22
confidence: high

ZIP 317 (proportional transfer fee) Zcash Improvement Proposals · accessed 2026-08-22

2024

28 Mar 2024protocolZashi wallet launches (iOS; Android late April) Zashi wallet launches (iOS; Android late April)T2024-03-28

T2024-03-28cite

claim: T2024-03-28
canonical: https://zecreveal.vercel.app/timeline#T2024-03-28
last verified: 2026-08-22
confidence: high

ECC — Meet Zashi (28 Mar 2024) Electric Coin Company · 2024-03-28 · accessed 2026-08-22

2025

Apr 2025month onlyprotocolProject Tachyon launched by Sean Bowe — oblivious synchronisation, scalability Project Tachyon launched by Sean Bowe — oblivious synchronisation, scalabilityT2025-04-01

T2025-04-01cite

claim: T2025-04-01
canonical: https://zecreveal.vercel.app/timeline#T2025-04-01
last verified: 2026-08-22
confidence: med

Sean Bowe, Tachyon: Scaling Zcash with Oblivious Synchronization Sean Bowe · accessed 2026-08-22

2026

28 May 2026protocolAnthropic releases Claude Opus 4.8 Anthropic releases Claude Opus 4.8T2026-05-28

T2026-05-28cite

claim: T2026-05-28
canonical: https://zecreveal.vercel.app/timeline#T2026-05-28
last verified: 2026-08-22
confidence: high

Zcash Community Forum — The Orchard Counterfeiting Vulnerability—And Next Steps (4 Jun 2026) Zcash Community Forum · 2026-06-04 · accessed 2026-08-22

3 Jun 2026protocolNU6.2 hard fork re-enables Orchard with fixed circuit NU6.2 hard fork at block 3,364,600 — fixed circuit, Orchard re-enabled. zcashd v6.20.0, zebrad v5.0.0T2026-06-03

T2026-06-03cite

claim: T2026-06-03
canonical: https://zecreveal.vercel.app/timeline#T2026-06-03
last verified: 2026-08-22
confidence: high

Zcash: Upgrade NU6 2 Zcash · accessed 2026-08-22

6 Jun 2026protocolIronwood announced — a new shielded pool Ironwood announced — a new shielded poolT2026-06-06

T2026-06-06cite

claim: T2026-06-06
canonical: https://zecreveal.vercel.app/timeline#T2026-06-06
last verified: 2026-08-22
confidence: high

ZODL (zodl.com) ZODL · accessed 2026-08-22

16 Jul 2026protocolZF announces Zakura, a second full node built from the Zebra codebase ZF announces Zakura, a second full node built from the Zebra codebaseT2026-07-16

T2026-07-16cite

claim: T2026-07-16
canonical: https://zecreveal.vercel.app/timeline#T2026-07-16
last verified: 2026-08-22
confidence: med

ZF blog index Zcash Foundation · accessed 2026-08-22

18 Jul 2026, 22:51:43 UTCprotocolzcashd reaches end of life, shuts down permanently zcashd end of life at block 3,417,100 — automatic permanent shutdown; cannot restartT2026-07-18

T2026-07-18cite

claim: T2026-07-18
canonical: https://zecreveal.vercel.app/timeline#T2026-07-18
last verified: 2026-08-22
confidence: high

z.cash — zcashd deprecation / EOL Zcash · accessed 2026-08-22

19 Jul 2026protocol`zcash/zcash` repository archived (read-only) `zcash/zcash` repository archived (read-only)T2026-07-19

T2026-07-19cite

claim: T2026-07-19
canonical: https://zecreveal.vercel.app/timeline#T2026-07-19
last verified: 2026-08-22
confidence: high

GitHub: Zcash Zcash Security Advisories GitHub · accessed 2026-08-22

28 Jul 2026, 13:00 UTCprotocolNU6.3 Ironwood launches a new shielded pool NU6.3 "Ironwood" — block 3,428,143. New formally verified (Lean) shielded pool; v6 tx format (ZIP 229); quantum recoverability (ZIP 2005); Orchard restricted to withdrawals only (ZIP 2006), creating the supply-verification turnstileT2026-07-28

T2026-07-28cite

claim: T2026-07-28
canonical: https://zecreveal.vercel.app/timeline#T2026-07-28
last verified: 2026-08-22
confidence: high

ZIP 258, Deployment of the NU6.3 Network Upgrade Zcash Improvement Proposals · 2026-07-28 · accessed 2026-08-22
The Block — Zcash activates Ironwood (28 Jul 2026) The Block · 2026-07-28 · accessed 2026-08-22

29 Jul 2026protocol / marketIronwood's first-day migration moves 176,000 ZEC First-day migration: ~176,000 ZEC (~$81 M) into Ironwood, ~5% of Orchard's 3.66 M ZEC. Swihart: "Orchard was fixed in 5 days and replaced in 60." Sean Bowe: "a cross-team collaboration has just changed Zcash's history."T2026-07-29

T2026-07-29cite

claim: T2026-07-29
canonical: https://zecreveal.vercel.app/timeline#T2026-07-29
last verified: 2026-08-22
confidence: high

CoinDesk — ~$80M ZEC crosses into Ironwood on day one (29 Jul 2026) CoinDesk · 2026-07-29 · accessed 2026-08-22