Historical record
Ethereum Homestead activates
The Homestead upgrade introduced protocol and networking changes supporting further upgrades.
Ethereum.org: protocol history and forks
CRYPTO HISTORY · SOURCES MATTER
The cycles had real consequences.
A sourced timeline of crypto milestones and failures, separate from the game’s fictional prices and random outcomes.
A curated, expandable archive. It does not claim to cover every event worldwide.
82 · Historical record
Historical record
Ethereum Frontier launches
Frontier launched Ethereum mainnet as an early implementation aimed at technical users.
Ethereum Foundation: Ethereum LaunchesHistorical record
Ether sale opens
The Ethereum Foundation announced the start of the ether sale; this predates mainnet launch.
Ethereum Foundation: Launching the Ether SaleHistorical record
Kraken announces Dogecoin trading
Kraken’s 15 April announcement added Dogecoin trading. This is an exchange milestone, separate from the coin’s 2013 launch.
DOGERead source ↗
Kraken: Enables Dogecoin TradingHistorical record
Ethereum Yellow Paper published
The technical specification by Gavin Wood formalized the Ethereum protocol design.
Ethereum.org: protocol history and forksHistorical record
Dogecoin community funds clean-water wells
The Dogecoin community raised over 40 million DOGE in March 2014 to support clean-water wells in Kenya, according to the project’s history.
DOGERead source ↗
Dogecoin: The History of DogecoinHistorical record
MtGox goes offline amid withdrawal disruption
MtGox’s website went offline after withdrawal problems. The Guardian’s 27 February report documents the collapse; the event is recorded at month precision.
The Guardian: How a bug in bitcoin led to MtGox’s collapseHistorical record
Dogecoin launches
Billy Markus and Jackson Palmer launched Dogecoin, taking its name and imagery from the Doge meme.
DOGERead source ↗
Dogecoin: The History of DogecoinHistorical record
Bitcoin’s first subsidy halving
At block 210000 the subsidy became 25 BTC. The cited main-chain block timestamp is 28 November 2012 UTC.
Blockchain.com block data: Bitcoin block 210000Historical record
A pizza purchase reported in BTC
Laszlo Hanyecz reported exchanging 10,000 BTC for pizza in the original forum thread.
Bitcoin Forum: Pizza for bitcoins?