On Thursday, Ark Invest parted ways with 133,533 Coinbase shares from its Ark Innovation exchange-traded fund (ARKK) and also disposed of 96,003 Robinhood shares from the ARKW ETF. Following these divestments, Ark Invest acquired Reddit shares for both the ARKW and ARKF ETFs. Ark’s Portfolio Pivot: COIN, HOOD Out, RDDT In This week, Cathie Wood‘s […]
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script – Why does SHA-256d (double SHA-256) in Bitcoin have a constrained message schedule in the second hash?
Bitcoin security never depended on resistance to length-extension because preimages are public anyway, and common belief is that the double...










