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![kelskash Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::3419000560.png) Kelskash [@kelskash](/creator/twitter/kelskash) on x XXX followers
Created: 2025-07-22 06:35:24 UTC

Day X
@union_build Light Client Simplified

Let's assume there are many magical kingdoms (like Ethereum Land, Cosmos Island, and Bitcoin Village). Each kingdom has its own rules and ways of doing things.

Now you’re in Ethereum Land, and you want to send your toy to a friend in Cosmos Island.

But… you don’t want to travel there or trust a stranger to take it. Too risky

So, here’s where Union’s Light Client comes in:

Union's Light Client = A Magical Mailbox!

Union builds a magic mailbox between kingdoms. This mailbox can check if a toy really came from your friend without needing to see everything that happened in the other kingdom.

Here’s how it works:
It doesn’t read the whole book of what happened in Cosmos Island,
Quite broad

Instead, it checks a special proof (like a signed card) that says:
“Yes! This toy is real and came from Cosmos!”

It’s like trusting a signed note from a royal guard rather than reading all the scrolls from that kingdom.

The Idea:
Kingdom Ethereum (with a kid holding a toy)

Kingdom Cosmos (with a friend waiting)

A magical glowing mailbox between them (labeled “Union Light Client”)

A paper note flying through it that says:
“Proof of Real Toy”

Then the toy appearing in Cosmos safely

Union light clients are like smart magical mailboxes.
They check proof, not the whole story,
so toys (or assets) move safely across kingdoms (blockchains).

![](https://pbs.twimg.com/media/GwcSw_yXwAEA9tA.jpg)

XXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1947546000127574369/c:line.svg)

**Related Topics**
[token](/topic/token)
[liquid](/topic/liquid)
[staking](/topic/staking)
[cosmos](/topic/cosmos)
[ethereum](/topic/ethereum)
[coins layer 1](/topic/coins-layer-1)
[bitcoin](/topic/bitcoin)
[coins bitcoin ecosystem](/topic/coins-bitcoin-ecosystem)

[Post Link](https://x.com/kelskash/status/1947546000127574369)