According to the source, Charles Hoskinson said a 'poisoned transaction' in November split Cardano into two chains and created reimbursement uncertainty even for operators who followed protocol, source: Charles Hoskinson via X video posted Dec 20, 2025. That disclosure signals temporary consensus divergence that can affect ADA transaction finality and exchange processing until remediation, source: Charles Hoskinson’s description of a chain split via X video posted Dec 20, 2025. Traders should increase confirmation counts for ADA deposits/withdrawals, monitor official Input Output Global updates for fixes and a post‑mortem, and track order-book spreads and funding for liquidity stress, source: risk controls aligned with Hoskinson’s chain‑split disclosure via X video posted Dec 20, 2025.