Waves Rewinds Chain After Abnormal Fee Blocks, Flags Nov. 9 Activity

Waves has rolled back its blockchain after abnormal-fee blocks created nonexistent WAVES balances, warning that transactions submitted during a Nov. 8-9 U.S. time window may be affected.

Waves said a third party generated blocks with unusually high fees on Nov. 9, leading multiple addresses to be credited with WAVES that did not exist. The network reset to block height 5,481,020, removing the erroneous balances, then resumed activity on a replacement chain starting at block 5,481,021.

The potentially affected period ran from 6:55 p.m. ET Nov. 8 to 5:16 a.m. ET Nov. 9, converted from the local times in Waves' notice. Transactions initiated in that span may have been affected.

Waves released software version 1.6.5 and directed all node operators to upgrade and manually roll back using its release instructions. Waves is a layer-1 network, a blockchain that runs its own chain history; its replacement chain has run from block 5,481,021 since the reset.