As of 8 December 2019, 99.9% of cryptocurrencies have lost 99% of their value since their peak.

Test: as of 8 Dec 2019, had about 99.9% of cryptocurrencies fallen 99% or more below their all-time peak price or market cap? True: comprehensive market data (e.g. CoinMarketCap or CoinGecko listings, including dead and delisted coins) shows that nearly all tracked coins, roughly 99.5% or more, were 99% or more below their peak. Mostly true: the large majority of coins (about 90% or more) were 99% or more below peak, or nearly all were down by about 95% or more, so the claim is a modest exaggeration. Mixed: about half to most coins had fallen 99% or more. Mostly false: the claim inflates a real pattern, for example most coins had fallen heavily (80–95%) but only a minority had fallen 99%, or the figure holds only if every dead coin is counted and fails for the coins that were still active. False: data shows that a minority of coins had fallen 99% or more and most had fallen far less.

Set before the research began.

1. E1 Almost Every Crypto Asset Is Down Over 90% From Peak Crypto Briefing · 15 June 2022

   “Close inspection of the data reveals another alarming fact—namely, that 12,836 (95.5%) of all cryptocurrencies on the market have fallen by more than 99.99% from their all-time highs.”

2. E2 Almost Every Crypto Asset Is Down Over 90% From Peak Crypto Briefing · 15 June 2022

   “According to data from the crypto price aggregator CoinGoLive, 13,240 or 98.5% of the 13,436 cryptocurrencies in existence are currently down 90% from their all-time highs.”

3. E3 The Big Blockchain Lie NYU Stern School of Business (republishing Nouriel Roubini's Project Syndicate op-ed) · 15 October 2018 Own record

   “The value of leading coins such as Ether, EOS, Litecoin, and XRP have all fallen by over 80%, thousands of other digital currencies have plummeted by 90-99%, and the rest have been exposed as outright frauds.”

4. E4 Crypto All-Time High Statistics (2026) WealthyBud · 2 October 2026

   “4 coins show a drop of 99.9% or more, and this page uses them as recorded”

5. E5 Crypto All-Time High Statistics (2026) WealthyBud · 2 October 2026

   “The median coin is 82.4% below its all-time high, and 85 of 212 (40.1%) are 90% or more below.”

6. E6 Nouriel Roubini - Wikipedia Wikipedia

   “And the average shitcoin lost 90% or more of its value in the last year.”

7. E7 Dead coins list: Over 1,000 crypto projects gone in 2019 CoinGeek · 20 October 2019

   “Deadcoins has an even larger list and states that 1,779 projects are dead.”

None of the evidence measures how far cryptocurrencies were below their peaks as of 8 December 2019. E1 and E2 report 2022 data from CoinGoLive: 98.5% of coins were down 90% and 95.5% were down more than 99.99%. E4 and E5 cover a 212-coin sample in 2026. E7 (October 2019) gives only a count of dead projects, not a share of all coins down 99%. With no data for the date in question, the claim cannot be judged against the criteria.