Hedera

2016-01-01

Swirlds, Inc. granted three U.S. patents protecting the hashgraph consensus algorithm invented by Dr. Leemon Baird.

2019-09-16

Hedera mainnet launched for open public access with HBAR as the native token.

2021-09-15

HBAR reached its all-time high price of approximately $0.57 USD.

2022-01-19

Hedera Governing Council voted to purchase the hashgraph intellectual property from Swirlds, Inc. and committed to releasing it under the Apache 2.0 open-source license.

2022-08-05

Hedera codebase transitioned to open source under Apache 2.0, completing the IP acquisition and open-sourcing commitment.

2022-11-01

Prolific scammer (account '2015717') allegedly began mass airdrop phishing campaigns targeting Hedera wallet users, sending fraudulent memos to tens of thousands of accounts.

2023-03-09

Attacker exploited a delegatecall precompile bug in Hedera's Smart Contract Service, stealing approximately $600,000 in tokens (DAI, USDT, USDC, WHBAR) from liquidity pools at Pangolin, SaucerSwap, and HeliSwap. Mainnet proxy access disabled at 20:18 UTC.

2023-03-11

Hedera mainnet upgraded with patch (version 0.34.5) blocking delegateCall to HTS precompile contracts; full service restored at 02:04 UTC, 41 hours after initial attack discovery.

2024-11-15

Hedera Governing Council approved governance reforms, reducing board size from seven to five members with two unaffiliated seats.

2025-01-01

HBAR reached approximately $0.40, a multi-year high driven by post-election crypto rally, before declining over 70% by end of Q1 2025.

2025-10-01

Canary Capital HBAR ETF launched, accumulating approximately $93 million in net inflows.

2025-06-03

FBI Internet Crime Complaint Center (IC3) issued formal public service announcement warning of cybercriminals defrauding Hedera Hashgraph non-custodial wallet users through NFT airdrop phishing schemes.