Application-specific chains built on the Cosmos SDK, with CometBFT consensus for instant finality, CosmWasm smart contracts, and native IBC connectivity to the wider interchain.
The Cosmos thesis is simple: rather than every application competing for block space on one shared chain, each application gets its own chain, and those chains talk to each other over a standard protocol. The Cosmos SDK gives you the framework to build that chain in Go, CometBFT gives it Byzantine fault tolerant consensus with instant finality, and IBC connects it to every other chain in the interchain.
We build Cosmos chains for teams who need control over their own block space, validator set, and fee model, and who want that chain to be liquid and reachable from day one rather than isolated behind a custom bridge. That covers the SDK modules, the CosmWasm contract layer, IBC channels and relayers, and the validator infrastructure behind it.
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2.1s block · 100% voting power · final
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From a first SDK module to a validator-secured chain routing IBC traffic.
Your product rules implemented as Cosmos SDK modules in Go, with their own state, messages, queries, and genesis handling.
A full application-specific chain: consensus parameters, staking, governance, fee model, and the launch that puts it live.
Rust contracts compiled to WebAssembly, for logic that should be deployable and upgradeable without a chain upgrade.
The interchain connectivity that makes a Cosmos chain useful: token transfers, interchain accounts, and cross-chain queries.
Running the chain in production, with the redundancy and key management that a live validator set requires.
The interface layer: Keplr and Leap wallet support, front ends, and indexers that make chain state queryable.
The interchain toolchain, from consensus engine and modules through to relayers and validator operations.
The SDK, its consensus engine, and the protocol that connects the interchain.
Native Go modules for chain logic, CosmWasm contracts for everything else.
IBC relayers, bridges, wallets, and the front ends on top of them.
Validator sets, upgrade handlers, and monitoring for a chain you own end to end.
Working with something else? Our teams pick up new tools quickly. Tell us about your stack.
The engineering that keeps an appchain safe, upgradeable, and connected.
Non-deterministic code in a module halts a BFT chain. We review for map iteration order, floating point, and time dependence as standard.
Upgrade handlers, store migrations, and Cosmovisor automation so a governance-approved upgrade executes cleanly across the validator set.
Timeout handling, channel ordering, and relayer redundancy configured properly, because stuck packets look exactly like lost funds to a user.
TMKMS-backed signing, sentry topologies, and double-sign protection to keep operators from being slashed.
Consensus timeouts and gas parameters tuned to your real transaction mix, rather than left at the scaffold defaults.
Deposit, quorum, and voting parameters set so proposals can actually pass without a handful of accounts controlling the outcome.
Where a sovereign, IBC-connected chain beats a contract on a shared network.
Exchanges, lending markets, and liquid staking protocols that need their own block space and fee model.
Routing, bridging, and data availability layers that sit between chains rather than inside one.
Permissioned validator sets with instant finality, a good fit for settlement between known parties.
High transaction volumes at predictable cost, with assets that can move to other chains over IBC.
From module specification to a chain with an independent validator set.
We map which logic belongs in SDK modules, which belongs in CosmWasm contracts, and how the chain earns and spends fees, then write it up before implementation begins.
The chain is scaffolded and the custom modules built in Go, with protobuf definitions, keeper tests, and a local devnet running from the first sprint.
CosmWasm contracts where they fit, plus CosmJS integration, Keplr wallet support, and the front ends and indexers your users and analysts need.
Channels opened to the chains you need, relayers deployed with redundancy, and transfer, timeout, and interchain-account flows tested end to end on a testnet.
A public testnet with external validators, determinism and upgrade testing, third-party audit of modules and contracts, and remediation.
Genesis coordination, validator onboarding, launch-window support, then ongoing upgrades, relayer monitoring, and parameter tuning.
What teams ask before committing to a Cosmos appchain.
An appchain gives you the whole block space. Your users are not competing with unrelated activity for gas, you set the fee token and the fee level, you can put logic in the state machine that a contract could never afford to run, and you control upgrades. The trade-off is that you have to secure and operate a validator set. If your product is fee-sensitive, throughput-heavy, or needs protocol-level rules, that trade is usually worth it.
You need one, but there are ways to make it manageable. Most launches start with a curated set of professional operators recruited during the testnet phase, with a staking programme to attract more over time. Alternatives such as interchain security or a mesh arrangement let a new chain rent economic security from an established validator set instead of bootstrapping it alone, and we assess whether that fits your case during design.
Modules run natively in Go, are faster and cheaper to execute, and are the right home for core protocol logic, but changing them requires a coordinated chain upgrade. CosmWasm contracts are deployable and upgradeable at any time, and can be opened to third-party developers, at the cost of some execution overhead. We normally put settlement and consensus-adjacent logic in modules and application logic in contracts.
IBC is a protocol built into the chains themselves: each side runs a light client of the other and verifies proofs directly, so there is no external validator committee to trust or compromise. Most bridge exploits have come from exactly that external committee. IBC only works between chains that support it, so reaching Ethereum or Solana still needs a bridge such as Axelar or Wormhole, and we design that layer deliberately rather than by default.
A chain built largely from standard SDK modules with a modest custom module and CosmWasm support typically reaches testnet in 3 to 5 months. A full appchain with substantial custom modules, IBC integration, audit, and coordinated mainnet launch usually runs 7 to 12 months, with the audit and testnet phases setting the pace.
Regularly. Common engagements are SDK version upgrades that have been deferred too long, module refactors, IBC and relayer stabilisation, validator infrastructure hardening, and taking over upgrade operations from a team that has moved on. We start with an audit of the chain, its modules, and its operational setup and give you a written assessment before touching anything.
Interchain projects rarely live on one network. We work across all of them.
Tell us what your chain has to settle and how it should connect to the interchain, and we will come back with a module architecture and a route to mainnet.