A validation mismatch triggered an unexpected fork on the Cardano network on Nov 21, 2025, and a user publicly apologized for broadcasting the faulty transaction. The incident—described as a "poisoned transaction attack"—briefly disrupted block validation for ADA nodes.
Bitmine said on Nov. 12 that Ethereum’s next significant network upgrade is scheduled to launch in December. The announcement from the largest Ethereum treasury firm lends credibility and could boost activity around ETH.
BitGo confirmed a temporary disruption on the XRP Ledger after an exchange wallet ran out of balance and automated scripts kept submitting payments, producing thousands of failed transactions and network congestion. The custodian says it has begun mitigation while queues clear.