On April 17, 2026, a governance proposal codenamed COSMOSIS was narrowly rejected in a community vote on the Cosmos Hub. The Osmosis team subsequently confirmed that its network would "continue to operate as an independent and profitable chain." This outcome not only put the planned merger between Osmosis and Cosmos Hub on hold, but also raised a more intriguing question: In the wave of modular blockchains, how will Osmosis, now independent, redefine its position in the ecosystem?
According to Gate market data, as of May 21, 2026, OSMO was trading at approximately $0.06322, with a market cap of around $48.95 million and a 24-hour trading volume of about $1.4621 million. TIA was priced at about $0.4082, with a market cap of roughly $375 million. ATOM traded at approximately $2.047, with a market cap of around $1.043 billion. The price movements of these three tokens reflect an ongoing structural debate within the Cosmos ecosystem: "sovereignty vs. aggregation," "independence vs. coupling."
Will Osmosis choose Celestia as its data availability layer? This is not just a technical integration issue between two chains—it also concerns the evolution of the IBC ecosystem amid the modular blockchain trend.
After COSMOSIS Was Rejected
The core design of the COSMOSIS proposal was to swap 1.998 OSMO for 0.0355 ATOM at a fixed ratio within six months, ultimately integrating the Osmosis DEX into Cosmos Hub’s governance and liquidity systems. The proposal’s architects initially planned to mint new ATOM to fund the swap. Prior to the vote, the Osmosis team made a key adjustment based on community feedback: instead of minting new ATOM, the required amount would be gradually purchased on the open market using protocol revenue from Osmosis DEX, with total purchases capped at 2.5% of ATOM’s total supply. This was intended to address ATOM holders’ concerns about dilution. However, this adjustment was not enough to change the outcome.
On May 11, 2026, about three weeks after the vote, discussions reignited over a revised integration path. OSMO surged from around $0.03383 to a peak of $0.128 within 12 hours, marking a roughly 200% increase in 24 hours. Data also showed that Osmosis DEX’s on-chain trading volume during this rally was only about $1.24 million, while the trading volume on centralized exchanges was about 141 times higher. This indicates that the rally was driven more by capital in centralized markets than by organic growth of the on-chain ecosystem.
The narrative of Osmosis operating independently thus became firmly established.
Three-Way Competition in the Modular Era
The following timeline highlights key milestones in the ongoing "independence–aggregation–modularity" dynamic among Osmosis, Celestia, and Cosmos Hub:
- October 2023: Celestia mainnet launches, TIA token airdropped, and the modular data availability layer officially enters the Cosmos ecosystem.
- October 2023: Osmosis launches the Pipette liquidity bridge, establishing a direct IBC connection with Celestia and allowing rollups to pay data availability fees cross-chain using any token on Osmosis.
- December 2023: Osmosis community passes a proposal to officially integrate Celestia as a data availability layer.
- March 2024: Ethereum’s Dencun upgrade introduces EIP-4844, reducing L2 data publishing costs by over 90%, sparking widespread interest in modular blockchain narratives.
- Full year 2025: Cosmos Labs brings Cosmos Stack development in-house, begins comprehensive overhauls of Cosmos SDK and IBC protocol, releasing SDK v0.53 and IBC v2.
- January 2026: The IBC protocol connects over 200 public blockchains, with a roadmap focused on expanding into external ecosystems like Solana and EVM L2s. At the same time, stablecoin appchain Noble announces migration to an independent EVM L1.
- March 11, 2026: Osmosis submits the COSMOSIS proposal.
- April 17, 2026: The proposal is rejected, and Osmosis confirms its independent operation.
- Q1 2026: Celestia announces its data availability market share has surpassed 50%, with over 56 rollups integrated and 37 deployed on mainnet.
- May 11, 2026: Revised COSMOSIS discussions reignite, OSMO surges about 200% in a single day.
- May 2026: Sei Network officially disables IBC asset transfer and pivots to a pure EVM architecture.
Diverging Roles of the Three Chains
The Cosmos ecosystem is undergoing a profound redefinition of roles. The functions of ATOM, OSMO, and TIA are shifting from "loosely parallel" to "layered and coupled."
Comparative Role Positioning of the Three Chains
| Dimension | Cosmos Hub (ATOM) | Osmosis (OSMO) | Celestia (TIA) |
|---|---|---|---|
| Ecosystem Role | Governance & Security Layer | Liquidity Layer | Data Availability Layer |
| Core Capabilities | IBC Routing, Shared Security | Cross-chain DEX, Liquidity Aggregation | Data Publishing & Verification |
| Current Market Cap | ~$1.043B | ~$48.95M | ~$375M |
| Core Narrative | Cross-chain Connectivity, not Integration | Modular Liquidity Hub | Pluggable DA Infrastructure |
(Note: Market cap data sourced from Gate, as of May 21, 2026.)
Osmosis and Celestia: Existing Integration Foundations
The coupling between Osmosis and Celestia didn’t start from scratch. In fact, they’ve already completed several key integrations:
TIA as a Fee Token: The Osmosis community passed a proposal to add TIA as a valid fee token for transactions on Osmosis, allowing users who only interact with Celestia to trade on Osmosis for the first time. Osmosis aims to become the primary market for Celestia and TIA-based rollups.
Pipette Liquidity Bridge: Osmosis introduced the Pipette solution, establishing a direct IBC connection with Celestia and leveraging Hyperlane’s cross-chain messaging to connect various rollups. Celestia rollups can use Pipette to pay data availability fees on Celestia with any token from Osmosis, enabling two-way liquidity.
Data Availability Fee Abstraction: Osmosis is exploring the use of a fee abstraction module, allowing rollups to pay Celestia’s data availability fees using their own assets instead of being required to hold TIA. This could significantly reduce the friction that currently hinders external ecosystem adoption in the modular landscape.
Concentrated Liquidity Pools: Osmosis launched a TIA/OSMO supercharged pool with initial liquidity of about $200,000, providing a more efficient price discovery mechanism for TIA trading within the Cosmos ecosystem.
These integrations show that the relationship between Osmosis and Celestia has moved beyond "strategic intent" and into a phase of substantive protocol coupling. As an independent chain, Osmosis now has stronger economic incentives to deepen this integration—no longer needing to wait for Cosmos Hub’s governance cycles to determine its tech stack.
Market Sentiment Breakdown: Support, Skepticism, and Caution
Market participants’ views on the deep integration between Osmosis and Celestia generally fall into three camps:
Liquidity Hub Thesis (Supportive)
Core logic: After becoming independent, Osmosis needs to break free from reliance on the Cosmos Hub narrative and seek new growth engines. Celestia’s modular ecosystem is a rapidly expanding market—by Q1 2026, over 56 rollups had integrated with Celestia DA, with 37 deployed on mainnet.
These rollups require an efficient liquidity layer to meet three needs: cross-chain asset transfers, token trading, and payment of data availability fees. Osmosis is well positioned to provide all three. Supporters argue that if Osmosis can become the "default liquidity layer" for the Celestia ecosystem, its transaction volume and fee income could achieve structural growth, rather than being driven by short-term events tied to governance.
Technical Risk Thesis (Skeptical)
The main concern is that Celestia currently uses the aTokenFilter mechanism, which essentially only allows TIA to remain on its state machine. Moving non-native tokens cross-chain requires intermediate layers like Packet Forward Middleware and Neutron. While fee abstraction is being explored, it remains experimental.
Moreover, Celestia is not the only data availability solution available to Osmosis. Alternatives include Ethereum’s mainnet blob market, EigenDA, and Avail. If Osmosis binds itself too closely to Celestia, it risks aligning its ecosystem’s strategic direction with a modular protocol that is still undergoing market validation.
Ecosystem Drain Thesis (Cautious)
The third camp is focused on the overall outflow from the Cosmos ecosystem. In January 2026, Noble announced its migration to an independent EVM L1. Noble led the ecosystem in IBC transfer volume—$93.84 million over 30 days, 1.8 times more than second-place Osmosis ($50.06 million). Meanwhile, Sei Network officially disabled IBC asset transfers in May 2026, shifting to a pure EVM architecture.
Proponents of the "ecosystem drain" thesis pose a sharp question: As more appchains opt out of the IBC ecosystem, is Osmosis’s cross-chain liquidity advantage being diluted? In this context, is deep integration with Celestia just "changing seats on a shrinking ship"?
Industry Impact: Accelerated Modular Specialization and IBC’s New Role
From Hub-Centric to Liquidity-Centric
The proposal and rejection of COSMOSIS reflect two competing models within the Cosmos ecosystem: a "hub-centric" integration model, aiming to concentrate liquidity, governance, and security within the ATOM economy; and a "liquidity-centric" loosely coupled model, where sovereign appchains combine freely via IBC and modular protocols.
If Osmosis chooses to deepen its partnership with Celestia, it would offer a strong real-world example of the second model. The message: a liquidity layer doesn’t have to be embedded within the Hub to deliver value—it can form a "decentralized coupling" with a data availability layer, jointly serving a broader modular appchain ecosystem.
Diverging Modular Paths: Cosmos vs. Ethereum
This choice will also have broader industry implications. Ethereum’s modular path is "rollup-centric," with L1 serving as both settlement and data availability layer—L2s execute transactions, while L1 ensures data availability and settlement security. Cosmos’s modular path is "sovereign rollups + pluggable modules"—appchains can independently choose Celestia for DA, Osmosis for liquidity, and are not tied to a single settlement center.
These models are not a zero-sum game, but reflect different technical philosophies: Ethereum emphasizes shared security and unified settlement, while Cosmos values sovereignty and modular composition. The deep integration between Osmosis and Celestia will serve as a crucial stress test for the "Cosmos model."
Scenario Analysis: Possible Evolution Paths
Based on the analysis above, here are possible scenarios for the evolving relationship between Osmosis and Celestia:
Scenario 1: Gradual Deepening
Osmosis, while remaining an independent chain, steadily deepens its protocol integration with Celestia. The fee abstraction solution launches an experimental version in the second half of 2026, and the Pipette bridge enables larger-scale, two-way rollup asset flows. Osmosis’s transaction volume and fee income grow moderately as Celestia’s ecosystem expands. This is the most likely scenario and aligns with the Osmosis team’s public commitment to "advance to the next stage of the roadmap."
Scenario 2: Strategic Tight Coupling
If more appchains in the Cosmos ecosystem follow Noble and Sei in exiting, and the network effects of the IBC ecosystem weaken rapidly, Osmosis may be forced into a tighter strategic alliance with Celestia—for example, making Celestia DA the default data publishing channel, establishing joint incentive mechanisms at the governance level, or even exploring token economic collaboration. This scenario would be triggered by further ecosystem outflows from IBC.
Scenario 3: Multi-DA Strategy
Osmosis does not rely solely on Celestia for data availability, but adopts a "multi-DA" strategy, supporting Ethereum’s blob market, EigenDA, and other solutions as well. This reduces single-point dependency risk but also disperses development resources, weakening the network effects that come from deep coupling with any one DA layer.
Scenario 4: COSMOSIS Returns
A revised COSMOSIS proposal is resubmitted with a better economic model and passes, resulting in Osmosis integrating with Cosmos Hub in some form. In this case, the relationship between Osmosis and Celestia would depend on Hub governance rather than unilateral decisions by the Osmosis team. During OSMO’s ~200% surge on May 11, 2026, some market participants were pricing in this expectation.
Conclusion
The rejection of the COSMOSIS proposal is not the end of the Osmosis story, but rather the beginning of its independent exploration of the modular path. The core choice facing Osmosis is not "whether to integrate with Celestia"—integration is already underway and ongoing—but "to what extent to integrate," and "whether the integration approach is sufficiently differentiated."
In the modular blockchain era, the "one appchain, one chain" model is giving way to protocol-level coupling between functional layers. The combination of liquidity and data availability layers could become the Cosmos ecosystem’s next core narrative following "cross-chain transfers."
Of course, realizing this narrative will require overcoming three key hurdles: the engineering feasibility of fee abstraction, the quality (not just quantity) of rollup growth within the Celestia ecosystem, and the restoration of overall confidence in the Cosmos ecosystem amid continued appchain outflows. Successfully clearing these hurdles will determine whether the "marriage" between Osmosis and Celestia evolves from forum proposals to protocol reality, or remains a temporary narrative stage.
