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![0xBreyn Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1717923681328902144.png) brey 🧙‍♂️ [@0xBreyn](/creator/twitter/0xBreyn) on x 57.4K followers
Created: 2025-07-22 18:21:47 UTC

union is changing the IBC game.
At the center is CometBLS, a ZK-powered CometBFT engine.

cometBLS proves tendermint finality with groth16 zk proofs.
~ gas drops: 3M to 210k
~ EVM compatible
~ no custom IBC needed
~ fast and trustless

cometBLS is 4x faster than ZkMint and 70x cheaper per proof.

validator rotation is optimized too. no need to submit proofs every block. @union_build only proves when necessary

fraud proofs to auto-shut down bad chains.

union and cometBLS:
~ fast bridging
~ ZK security
~ cross-chain
~ fraud protection
@union_build utility is fire

![](https://pbs.twimg.com/media/Gwe0bZpW8AAD2vf.png)

XXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1947723764395086292/c:line.svg)

**Related Topics**
[unionbuild](/topic/unionbuild)
[faster](/topic/faster)
[drops](/topic/drops)
[zk](/topic/zk)

[Post Link](https://x.com/0xBreyn/status/1947723764395086292)