EU supervisors warn quantum computing could weaken blockchain security as Bitcoin developers weigh a draft migration plan and Ethereum targets 2029.

Prices at the time of writing, on 23 September: Bitcoin (BTC) at $83,906, which slipped 3.0% over the previous day and climbed 11.2% across the week; and Ethereum (ETH) at $2,658, which slipped 3.3% over the previous day and climbed 11.3% across the week. The wider market slipped 2.7% over the same span, with total capitalisation at $2.93T.

Our own momentum signal on Bitcoin reads 58 out of 100 — neutral — weighting the 24-hour move twice the seven-day one. Fifty is flat; the venue or filing has no say in that score.