Issue #612: Coldcard Seed Warning, Santander Fund Filing, Korea Crypto Tax

Coinkite urges affected Coldcard users to move funds to wallets created with newly generated seeds, while Block's analysis describes a wider set of affected models than Coinkite's initial assessment. Banco Santander appears on a Bitcoin ETF shareholder list for the first time. And South Korea's government is holding to a 2027 crypto-tax start date even as a repeal bill remains under review. https://www.btcbreakdown.com/p/issue-612