Another blow to Bitcoin's fungibility. Without privacy, threats like these are possible.
"All users of Blockseer’s pool are required to pass KYC (Know Your Customer) protocols, and blocks posted to the Bitcoin blockchain by Blockseer’s pool will only contain filtered transactions using Blockseer and Walletscore’s labeling data, along with verified sources such as the United States OFAC blacklist for crypto."
https://stockhouse.com/news/press-releases/2020/10/29/dmg-s-subsidiary-blockseer-launches-bitcoin-mining-pool-focused-on-good