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| 24H | 0.00% | -- | -- |
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Halcyon Coin is a decentralized digital currency, launching August 16th 2014 with a Proof of Work (PoW) period lasting approximately 9 days. Halcyon was developed so the PoW period would run simulataneously with the Proof of Stake phase (PoS), which eventually took over the blockchain as a means to confirm transactions. Halcyon was launched with no Premine or IPO. Stake holders are rewarded for holding their coins, at a rate of 9% annually. This rate also compounds on itself, and the staker is rewarded transaction fees as an extra incentive. Halcyon users with wallet balances greater than 2000 coins will soon be able to participate as masternodes, which will provide another source of residual income. There were a total of 1.62 million coins produced by the end of the PoW phase. The x15 algorithm was chosen so as to give individuals the best chance to acquire coins, with the least amount of multipool and asic interference.

Binance, the world's largest cryptocurrency exchange, halted withdrawals on October 29, 2026 after unauthorized transfers drained one of its wallets.

Coinbase, Bithumb, Daishin Securities and Mirae Asset Global Investments each confirmed unrelated breaches within the same day, with three of the four incidents reported in South Korea.

Solana switched on its Alpenglow upgrade on October 21, 2026, replacing the way its validators agree that a transaction is final. Validators are the computers that run the network, and finality is the point where a transaction can no longer be reversed.
Ascending and descending triangles are the two most common right-angle chart patterns. Learn how to draw them correctly, confirm breakouts instead of guessing, project targets with the measured move, and control risk when the pattern fails.
Bitcoin Pizza Day marks the first documented purchase of a physical item with bitcoin. Learn what happened on May 22, 2010, how much 10,000 BTC was worth then and later, and who the Bitcoin Pizza Guy really is.

Polymarket is a decentralized prediction market on Polygon where users trade Yes/No shares on real-world events. Here is how it works, how accurate its prices are, its crypto limits, and its legal status.