.@union_build just dropped their technical deep dive and the consensus verification approach is actually interesting to read about.

Let me explain.

They're doing something different from every other bridge:

Validators on Chain A verify consensus of Chain B directly. No middlemen or no multisigs, but cryptographic proofs that consensus happened.

Combined with ZK proofs for aggregation, this means:
> Instant settlement across chains
> No trust assumptions
> Scales beyond current settlement layers

This bring SO many possibilities.

@boundless_xyz is taking another approach. Yes, both use ZK for interoperability but:
> Boundless: Universal proof verification layer
> Union: Direct consensus verification between chains

Now you might think, “but which one works and which one doesn’t?”

Well, @cysic_xyz hardware acceleration makes both approaches viable at scale. Their ASICs can for example generate the ZK proofs Union needs in real-time.

This is the infrastructure that makes true cross-chain possible. Because we’ve al seen the hacks, depegs, and itched issues that happen with wrapped tokens and trusted bridges.

The future is chains talking directly to each other with cryptographic guarantees.