The available research for this report is limited, so the draft stays with the narrowest claim the surviving evidence set names: a prolonged negative run on a Coinbase-linked Bitcoin market signal and a latest sub-zero print that had not yet reversed. CryptoQuant’s Coinbase Bitcoin Premium Index page and Coinglass’s Coinbase Bitcoin Premium Index page are the only non-API URLs in the brief tied to the headline claim that the Coinbase Bitcoin Premium Index stayed negative for 44 consecutive days, with the latest reading at -0.1089%.