MANTRA Restarts Without a Rollback and the Market Sells the News

MANTRA's chain is producing blocks again. Block production resumed at about 05:30 UTC on Saturday, at block 17,449,398, on an emergency patch labeled v8.4.0, roughly thirty hours after the last block was signed. The team restarted without rolling back state, so every balance sits exactly where the halt froze it. That is the fastest of the week's chain recoveries, at least on paper. The market's verdict arrived on Sunday, and it was a sell.

Thirty hours dark, then a clean restart

Saturday's resumption, reported by crypto.news that day, closes out the halt that stopped the chain at about 23:13 UTC on Thursday, after suspicious activity touched two MANTRA-managed wallets. The team's account of the damage has not changed since the first night.

"No user funds were exploited," the team said.

Not everything came back at once. The DuKong testnet stayed offline after mainnet resumed, and public RPC and EVM endpoints lagged the validators, so wallets and explorers caught up more slowly than the chain itself. Those are the ragged edges of a fast restart, not evidence against it, but they meant the network users touch was slower to return than the block height suggests.

The road Harmony took

Keeping state intact is a decision, and this week supplied the counterexample. Harmony is attempting a rollback of 141,628 blocks to erase a forged mint from its ledger, with phase two of that plan activated on 20 August and no completion announcement found over the weekend. A rollback rewinds the chain to a height before the attack and regenerates history from there, wiping the transactions in between. The week held a third path as well, since BounceBit answered its own incident by shutting its L1 down entirely. Three chains, three answers. MANTRA judged its ledger clean enough to keep. Whatever moved through those two managed wallets is now permanent, and every user balance with it.

The token was not reassured

OM fell anyway. CoinGecko's Sunday snapshot put the token at $0.004448, down about 9.2% on the day, with a 24-hour range of $0.004402 to $0.004958 and a seven-day loss of 10.2% — a live-widget reading, so the exact prints deserve a fresh check, though the direction was not in doubt. A halted chain that comes back intact, with balances untouched, would normally earn some relief. This one earned none. Nearly two days of confirmed block production were priced as old news, and the slide that began with the halt simply continued through the recovery. For a token already trading below half a cent, another nine percent is not noise.

A patch is not a floor

What v8.4.0 repairs is the flaw. What it cannot repair is what the incident cost the token, and Sunday's tape says that bill is still being paid. The larger unknown is the flaw itself. Neither MANTRA nor Cosmos Labs has confirmed whether the attacker used the same vulnerability in ICS20, the Cosmos standard for moving tokens between chains, that was disclosed back in March 2026, a question crypto.news has kept open since the halt. The full technical report was still pending as of Sunday evening, and we could not find a post-mortem dated 23 August. So the recovery stands at: blocks confirmed, balances intact, testnet down, root cause unnamed. Until the report lands, the halt has an ending. The incident does not.