[GUEST ACCESS MODE: Data is scrambled or limited to provide examples. Make requests using your API key to unlock full data. Check https://lunarcrush.ai/auth for authentication information.]

![yakymoney Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1285999518.png) Yaky 🦪 [@yakymoney](/creator/twitter/yakymoney) on x 2467 followers
Created: 2025-07-23 15:49:21 UTC

UNION INTERACTION:

Few days ago I did a swap

from BOB ⇝ BABYLON

Using @union_build BTC website
[btc . union . build]

Why am I talking about this?

Any BTC L2 (like BOB Chain) → Babylon transfer 

currently has to go through an external bridge (e.g. wrapped tokens or custodial relays)

▸ This introduces trust assumptions
▸ Increases the risk of hacks and 
▸ Causes liquidity fragmentation

IBC (Inter-Blockchain Communication) 

only works with Cosmos chains that use Tendermint consensus and have light clients

Babylon Chain is a Cosmos chain

but most Bitcoin Layer 2s (like BOB, Bitlayer etc) do not use Tendermint

So, IBC can’t connect them directly, and there aren’t any tools that let Bitcoin L2s transfer assets natively to Babylon

With Union Build’s zkIBC architecture:

Chains don’t need to use the same consensus like Tendermint to communicate

Instead, it uses on-chain zero-knowledge proofs 

and BLS signatures to verify that a block is finalized securely

This lets Bitcoin Layer 2s connect directly to Cosmos chains like Babylon without relying on wrapped tokens or trusted bridges

Before now

IBC has helped move billions safely inside Cosmos 

and has showed how useful native cross-chain messaging is

But it only worked within Cosmos chains

It has kept those billions in its own world

but now Union’s via its zkIBC has created that secure pathway for other chains without the middlemen

This is how true multi-chain should work.

zkgm 🦈

![](https://pbs.twimg.com/media/GwjXDT6W0AQjZQt.jpg)

XXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1948047794859565182/c:line.svg)

**Related Topics**
[l2](/topic/l2)
[oracle](/topic/oracle)
[coins interoperability](/topic/coins-interoperability)
[bob](/topic/bob)
[$xwp](/topic/$xwp)
[bitcoin](/topic/bitcoin)
[coins layer 1](/topic/coins-layer-1)
[coins bitcoin ecosystem](/topic/coins-bitcoin-ecosystem)

[Post Link](https://x.com/yakymoney/status/1948047794859565182)