unionlabs/union
Some data may be outdated — see provenance labels.
The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance. observed · 2026-10-02
Health v2 · maintenance only
78/100
- Activity 86
- Release rhythm 60
- Longevity 89
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 0
- age_days: 1253
- days_rel: 267
- days_push: 87
- n_releases_24m: 10
Adoption not part of the score
73786 stars · 3886 forks observed · 2026-10-02
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Union is a trust-minimized zero-knowledge bridging protocol enabling general message passing, asset transfers, NFTs, and DeFi across Cosmos (IBC) and EVM chains without trusted third parties, oracles, or MPC. The monorepo contains the node implementation, ZK prover, cross-chain relayer, CosmWasm and EVM smart contract stacks, light clients, and a TypeScript web app.
Use cases
- bridge assets between cosmos and ethereum without trusted third parties
- send cross-chain messages with zero-knowledge consensus verification
- deploy ibc to evm chains
- build defi apps with trust-minimized interoperability
- run a relayer between cosmos and evm ecosystems
- verify blockchain consensus with zk proofs
When to choose
- you need censorship-resistant, trust-minimized cross-chain bridging
- you want IBC connectivity on EVM chains
- security matters more than relying on oracles or multisigs
- you need fast subsecond cross-chain messaging
When to avoid
- you need a simple custodial bridge with minimal setup
- your chains are not Cosmos- or EVM-compatible
- you only need token swaps within a single ecosystem
Facets
framework · maturity active
cryptography rpc middleware sdk blockchain blockchain fintech security cross-platform rust go cli zero-knowledge bridge interoperability ibc cosmos evm ethereum relayer prover light-clients cosmwasm solidity defi cross-chain-messaging bls-signatures cryptocurrency typescript linux web-server
4 sources
- readme: https://github.com/unionlabs/union · fetched 2026-10-02 · 7d137663beb5
- homepage: https://union.build · fetched 2026-09-07 · 8dde2cbae6e3
- site_page: https://docs.union.build/ · fetched 2026-09-07 · cdc290478266
- site_page: https://docs.union.build · fetched 2026-09-07 · cdc290478266
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| unionlabs/union | main | 78 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem