On November 13, 2026, the Cosmos-based blockchain Osmosis experienced a major network outage that stopped block production for approximately four hours. On-chain records show that the interruption occurred at block height 74,955,152 before the network eventually recovered.
Following the outage, South Korean cryptocurrency exchange Upbit suspended all Osmosis (OSMO) deposits and withdrawals to protect users’ funds. Although the blockchain has resumed producing blocks, Upbit has not announced when transfers will reopen. The exchange stated that services would remain suspended until its internal checks confirm that the network is fully stable.
South Korea’s Top Crypto Exchange Upbit Halts OSMO Transfers Amid Network Outage
Upbit, South Korea’s largest cryptocurrency exchange by trading volume, announced it has temporarily suspended deposits and withdrawals of Osmosis (OSMO) on Osmosis Chain after the Cosmos-based Layer 1 blockchain stopped producing blocks. Spot trading of OSMO remains unaffected. https://t.co/9nt6J9zFlO
— amit malik (@amitmalikmalik) November 13, 2026
Other major cryptocurrency platforms, including Bithumb and Coinbase, also reported significant delays in OSMO transfers during the interruption.
Read also: South Korean Exchanges Upbit and Bithumb Expand KRW Markets with Canton and Arcium Listings
Upbit continues OSMO spot trading despite the Osmosis Network outage
Despite the blockchain being unable to produce new blocks, Upbit kept the OSMO spot trading open. This meant users could continue buying and selling the token on the exchange even though they could not deposit or withdraw it.
On X, Tieu highlighted this unusual situation, questioning how traders could actively buy and sell a digital asset that they could not move into or out of the exchange.
upbit halts osmo transfers because the chain stopped making blocks, but you can still trade it on the exchange.
that’s a weird situation, being able to buy and sell something you can’t move in or out 🤍 https://t.co/UsAKuGTAns
— Tiểu Nhân Long 🐉 Premium+ (@tieunhanlong) November 13, 2026
This is possible because centralized exchanges process trades through their internal systems rather than recording every transaction directly on the blockchain. As a result, trading can continue even when the underlying decentralized network stops working.
However, this arrangement also exposes a weakness in the broader Cosmos ecosystem. On X, a product marketer at CoinMarketCap, noted that Cosmos-based blockchains have recently experienced repeated block production problems. Frequent outages across specialized application-specific blockchains (app-chains) can undermine confidence in the reliability of the wider interconnected ecosystem.
South Korea’s Top Crypto Exchange Upbit Halts OSMO Transfers Amid Network Outage
Upbit, South Korea’s largest cryptocurrency exchange by trading volume, announced it has temporarily suspended deposits and withdrawals of Osmosis (OSMO) on Osmosis Chain after the Cosmos-based Layer 1 blockchain stopped producing blocks. Spot trading of OSMO remains unaffected.
— Wu Blockchain (@WuBlockchain) November 13, 2026
IBC transfers and cross-chain activity were disrupted
The four-hour outage also affected the infrastructure connecting Osmosis to other blockchain networks. When block production stopped, transactions could no longer move into or out of the network.
Saad Altaf on X explained that the interruption prevented transfers across the network. He also pointed out that even after block production resumed, external services such as the Inter-Blockchain Communication (IBC) protocol might require manual intervention to catch up.
@frag_dude @osmosis itself stopped making blocks for about four hours overnight, so nothing could move in or out. it’s back up now, but the services(like IBC) that carry transfers between chains often need a nudge to catch up
— Saad Altaf (@saadaltaflaldin) November 13, 2026
Other network participants reported similar problems.
This highlights a major weakness in blockchain interoperability. When one network stops producing blocks, services that depend on its continuous block production and transaction finality can also stop functioning.
Even after the affected blockchain recovers, cross-chain services may not resume immediately. They may require additional checks or manual intervention before normal operations can continue. The Osmosis outage therefore demonstrates how a failure on one blockchain can disrupt cross-chain liquidity and activity across the wider decentralized ecosystem.
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