BTC
$107,455.08
+
0.66%
ETH
$2,439.87
+
1.83%
USDT
$1.0003
-
0.01%
XRP
$2.1949
+
5.41%
BNB
$646.97
+
0.58%
SOL
$151.29
+
7.52%
USDC
$0.9998
+
0.00%
TRX
$0.2739
+
0.90%
DOGE
$0.1640
+
4.03%
ADA
$0.5667
+
3.61%
HYPE
$37.12
+
3.10%
WBT
$47.21
+
2.63%
BCH
$489.96
-
2.55%
SUI
$2.7758
+
2.63%
LINK
$13.35
+
4.49%
LEO
$9.0824
+
0.48%
AVAX
$17.98
+
4.62%
XLM
$0.2383
+
2.32%
TON
$2.8385
+
0.59%
SHIB
$0.0₄1148
+
3.52%
Logo
  • News
  • Prices
  • Data
  • Indices
  • Research
  • Events
  • Sponsored
  • Sign In
  • Sign Up
Finance
Share this article
X iconX (Twitter)LinkedInFacebookEmail

Zcash May Be Getting Spammed but the Blockchain Is Doing Just Fine, the Company Behind It Says

Electric Coin Co., the organization behind Zcash, claims that concerns of a spam attack are mostly just fear, uncertainty and doubt (FUD).

By Frederick Munawa
Updated May 9, 2023, 3:58 a.m. Published Oct 7, 2022, 3:38 a.m.
(Shutterstock)
(Shutterstock)

The Zcash blockchain is experiencing a sudden increase in size due to higher transaction volumes, prompting concerns of a potential spam attack.

Jameson Lopp, co-founder and chief technology officer of bitcoin storage company Casa, claims the Zcash blockchain has tripled in size to over 100GB in a matter of months.

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters
By signing up, you will receive emails about CoinDesk products and you agree to our terms of use and privacy policy.

Somebody's having fun spamming the zcash blockchain and tripling its size to over 100 GB. Rough estimate is that this attack is costing them ~$10 a day in transaction fees. pic.twitter.com/D8EB1niju3

— Jameson Lopp (@lopp) October 5, 2022

Electric Coin Co. (ECC), the organization behind Zcash, issued a statement on Twitter addressing the concerns and assured users that Zcash was functioning normally.

ECC has been monitoring the increase in the Zcash blockchain size due to recent higher transaction volumes.

— Electric Coin Co. (@ElectricCoinCo) October 6, 2022

“The vast majority of Zcash users are unaffected by the increased size of the blockchain, but users of shielded wallets are reporting slower than normal sync times due to a high volume of transactions with a high number of outputs. While Zcash is functioning as designed, the ECC engineering team is focused on improving performance,” the statement read.

"Since Zcash is increasingly important, both to adversaries of freedom and to defenders of freedom, it is getting more and more attention," Zooko Wilcox-O'Hearn, CEO and founder of ECC, told CoinDesk. "But the narrative that there is something wrong and Zcash is vulnerable to attack or is failing is false."

He added, "In fact, Zcash has already rapidly improved to handle the increased load."

The price of Zcash token ZEC is holding steady, trading at $55.29 at the time of publication.

UPDATE (Oct. 7, 2022, 14:37 UTC): Adds comments from Zooko Wilcox-O'Hearn.

CORRECTION: (Oct. 24, 2022, 16:34 UTC): Fixes the spelling of the name of the company behind Zcash.

ZcashSpamPrivacy Coin
Frederick Munawa

Frederick Munawa was a Technology Reporter for Coindesk. He covered blockchain protocols with a specific focus on bitcoin and bitcoin-adjacent networks.

Prior to his work in the blockchain space, he worked at the Royal Bank of Canada, Fidelity Investments, and several other global financial institutions. He has a background in Finance and Law, with an emphasis on technology, investments, and securities regulation.

Frederick owns units of the CI Bitcoin ETF fund above Coindesk’s $1,000 disclosure threshold.

X icon
CoinDesk News Image
Latest Crypto News
Assets

Price Chip Testing

23 hours ago
Article image

Digital Asset, Builder of Privacy-Focused Blockchain Canton, Raises $135M

Jun 24, 2025
Article image

Bankrupt Crypto Exchange FTX Slams Three Arrows Capital’s $1.51B Claim: “3AC Is Owed Nothing”

Jun 23, 2025
Article image

Ethereum Surges 4% on Massive Volume as Institutional Interest Grows

Jun 23, 2025
FastNews (CoinDesk)

[Test test ] translation without price widget

Jun 20, 2025
FastNews (CoinDesk)

[Test-C31-6047, FastNews] JPMorgan To Allow Clients To Buy Bitcoin, Says Jamie Dimon

Jun 20, 2025
Top Stories
Assets

Price Chip Testing

23 hours ago
JPMorgan Chase CEO Jamie Dimon (Photo by Kevin Dietsch/Getty Images)

JPMorgan To Allow Clients To Buy Bitcoin, Says Jamie Dimon

May 19, 2025
Ethereum co-founder Vitalik Buterin (CoinDesk Archives)

Ethereum's Vitalik Buterin Proposes Design to Make Running Nodes Easier

May 19, 2025
A barman shakes a cocktail shaker with an array of drinks bottles behind him.

Crypto Daybook Americas: Bitcoin Whiplash Shakes Market as U.S. Yield Spike Threatens Bull Run

May 19, 2025
Mike Novogratz, Galaxy founder and CEO, speaks at Consensus 2024 (CoinDesk/Shutterstock/Suzanne Cordiero)

The Bull Case for Galaxy Digital Is AI Data Centers Not Bitcoin Mining, Research Firm Says

May 19, 2025
Tokyo, Japan (Jaison Lin/Unsplash)

Metaplanet Buys Another 1,004 Bitcoin, Lifts Holdings to Over $800M Worth of BTC

May 19, 2025

Only 1 article remaining this month.

Sign up for free

About

  • About Us
  • Masthead
  • Careers
  • CoinDesk News
  • Crypto API Documentation

Contact

  • Contact Us
  • Accessibility
  • Advertise
  • Sitemap
  • System Status
DISCLOSURE & POLICES
CoinDesk is an award-winning media outlet that covers the cryptocurrency industry. Its journalists abide by a strict set of editorial policies. CoinDesk has adopted a set of principles aimed at ensuring the integrity, editorial independence and freedom from bias of its publications. CoinDesk is part of the Bullish group, which owns and invests in digital asset businesses and digital assets. CoinDesk employees, including journalists, may receive Bullish group equity-based compensation. Bullish was incubated by technology investor Block.one.
EthicsPrivacyTerms of UseCookie SettingsDo Not Sell My Info

© 2025 CoinDesk, Inc.
X icon
Sign Up
  • News
    Back to menu
    News
    • Markets
    • Finance
    • Tech
    • Policy
    • Focus
  • Prices
    Back to menu
    Prices
    • Data
      Back to menu
      Data
      • Trade Data
      • Derivatives
      • Order Book Data
      • On-Chain Data
      • API
      • Research & Insights
      • Data Catalogue
      • AI & Machine Learning
    • Indices
      Back to menu
      Indices
      • Multi-Asset Indices
      • Reference Rates
      • Strategies and Services
      • API
      • Insights & Announcements
      • Documentation & Governance
    • Research
      Back to menu
      Research
      • Events
        Back to menu
        Events
        • CoinDesk: Policy & Regulation
        • Consensus Hong Kong
        • Consensus Miami
      • Sponsored
        Back to menu
        Sponsored
        • Thought Leadership
        • Press Releases
        • CoinW
        • MEXC
        • Phemex
        • Advertise
      • Videos
        Back to menu
        Videos
        • CoinDesk Daily
        • Shorts
        • Editor's Picks
      • Podcasts
        Back to menu
        Podcasts
        • CoinDesk Podcast Network
        • Markets Daily
        • Gen C
        • Unchained with Laura Shin
        • The Mining Pod
      • Newsletters
        Back to menu
        Newsletters
        • The Node
        • Crypto Daybook Americas
        • State of Crypto
        • Crypto Long & Short
        • Crypto for Advisors
      • Webinars
        Back to menu
        Webinars
        Select Language
        English enEspañol esFilipino filFrançais frItaliano itPortuguês pt-brРусский ruУкраїнська ukDeutsch deNederlands nl