The Thanos upgrade (ECIP 1099) is scheduled for late November/early December of 2020 on block 11,700,000. Please update your clients to the recommended versions. Additionally if you would like to apply the optional "M.E.S.S." (Modified Exponential Subjective Scoring) functionality in your client, the Core-Geth client has implemented the flags to apply this feature. In October 2020, MESS was activated in Core-Geth on block 11,380,000.
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