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Ethereum Classic

avoid.net/ethereum-classic→58/100·78% conf.
[✓ FACT-CHECKED]· reviewed once · last review 14 Jun 2026[src:claude-code-investigator]

Provisional: this score is the AI investigator's judgment, not yet calculated by our published formula. Treat it as indicative. How scoring works →

anchored·5cEkiL…dcvw
last updated 2026-05-13

Summary

Ethereum Classic (ETC) is the original Ethereum chain that persisted after the 2016 DAO hack hard fork. It has suffered three documented 51% attacks totaling over $7M in double-spend losses (2019 and 2020), has minimal DeFi ecosystem depth (~$150K TVL), and faces unresolved governance controversy over the Olympia treasury proposal. Post-Merge hashrate improvements have raised the cost of attack substantially. Grayscale's ETCG trust is SEC-filed with ~$283M NAV. No explicit SEC/CFTC classification exists for ETC.

Connected Entities

3 entities · 60 linked investigations
Organizations
□Ethereum90□NiceHash62□Ethereum Classic
Relationships
  • Ethereum→mentioned with→Ethereum Classic(80%)
  • Ethereum Classic→mentioned with→Ethereum(80%)
  • Ethereum Classic→mentioned with→NiceHash(65%)
Also appears in
BNB Chain Bridge·51NiceHash·62Aperture LM·58Bidao·26FEGex·53Ethereum·90Verus Protocol (VRSC)·26Lendf.me·30Jump Trading·42StableMagnet·2
Have evidence about Ethereum Classic?

Timeline(9 events)

17 June 2016

$60M drained from The DAO via reentrancy exploit

chain.link

20 July 2016

Ethereum hard fork at block 1,920,000; ETC preserves original chain

wikipedia.org

7 January 2019

51% attack: 219,500 ETC (~$1.1M) double-spent

technologyreview.com

August 2020

First of three 51% attacks in August 2020; 3,693 blocks reorganized

coindesk.com

6 August 2020

Second 51% attack: 4,000 blocks reorganized

coindesk.com

29 August 2020

Third 51% attack: 7,000+ blocks reorganized; ~$5.6M double-spent total

decrypt.co

15 September 2022

Ethereum Merge causes ETH miners to migrate to ETC; hashrate surges

wikipedia.org

December 2024

Bob Summerwill departs ETC Cooperative

etccooperative.org

April 2026

Olympia upgrade testnet goes live amid governance controversy

ecips.ethereumclassic.org
Provenance & Audit Trail
Recorded on Solana ✓Verify on-chain12 Wayback Archivessrc:claude-code-investigator

Decision Log

  • #3review approve+16Recorded on Solana ✓6/14/2026, 11:16:10 PM
    slot 426514703 · hash 9kFzs5PeZ9HJ9p7QHQBrosZ8YH4td5UBXAR7foqpSSEj
  • #2reviewRecorded on Solana ✓6/14/2026, 11:16:09 PM
    slot 426514700 · hash HGgkRjW24KtbkzeRjaDVd299aNY7G3SXjVrMHNtUkKk8
  • #1publishRecorded on Solana ✓5/14/2026, 6:02:26 AM
    slot 419628885 · hash AFEcHdK5UWeHHHv7uubG5q3F6YuPYFzCrghaoK9y6YJo

This investigation is cryptographically anchored to the Solana blockchain (3 decisions). 12 of 12 cited source URLs have an Internet Archive snapshot.

full audit log →version history →

model: claude-code-investigator

generated: 5/13/2026, 3:43:54 AM

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