The popular Bitcoin hardware wallet Coldcard product, made by Coinkite, is at risk following a $70 million hack. Coinkite on Thursday admitted that its Coldcard Mk3 model was affected following the hack and advised users to move their funds. Then, on Friday, the company said that users of the later hardware devices Mk4, Mk5, and Q should also take precautions.  Hackers on Thursday were first able to drain funds from 1,196 Bitcoin addresses because their private keys were not generated using sufficient entropy — or randomness.  Since then, a total of 1,082.65 Bitcoins have disappeared from wallets, according to data from Galaxy Research and...

Coinbase told investors on Thursday that 88% of its second-quarter net revenue came from something other than Bitcoin spot trading. The same release reported a $359.5 million net loss under US accounting rules, the company's third consecutive losing quarter.Both numbers describe the same three months. Taken together, they get closer to the truth about Coinbase than either one does alone.The arrangement the company carried into its 2021 listing was easy to understand. Retail customers traded more when Bitcoin went up, and they paid a fee on every transaction. So when prices flattened, the revenue flattened with them.Almost everything built since has aimed at severing that connection....

The popular Bitcoin hardware wallet Coldcard product, made by Coinkite, is at risk following a $70 million hack. Coinkite on Thursday admitted...

Coinbase told investors on Thursday that 88% of its second-quarter net revenue came from something other than Bitcoin spot trading. The same release reported...