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This company called Utexo raised $7.5 million and is claiming to "bring USDT back home to Bitcoin." It seems to be making good on something that Tether was advertising back in August of last year (#1197322):

So, naturally, I'm curious what the heck they mean by this.

USDT issued on Lightning using RGBUSDT issued on Lightning using RGB

This is how their FAQ says Utexo works under the hood:

Utexo combines two Bitcoin-native protocols: the Lightning Network for instant, off-chain payment execution, and RGB for issuing and transferring USDT with confidential, Bitcoin-anchored settlement. Execution happens off-chain for speed and scale; cryptographic commitments are anchored to Bitcoin’s base layer for correctness and finality.

So, a quick refresher on RGB: in its current form, RGB uses Taproot Script to "hide" some information about the various tokens they support in a Bitcoin transaction. Because you don't have to reveal all taproot spend paths in order to spend your coins, it's possible to have only the clients who are interested in using RGB see the data and interact with the protocol. (At least this is my novice understanding of it). I believe this is what they call running USDT "natively" on bitcoin.

I'm still a little fuzzy about how RGB works with lightning, but it seems like you can route RGB tokens on lightning via nodes that don't care about RGB.

The question is, if USDT is already a custodial token and completely controlled by Tether, is it worth bothering with all this RGB complexity when you can just send the tokens on Tron?

Anyhow, here's their announcement video:

195 sats \ 1 reply \ @Murch 7h

The company name doesn’t strike me as particularly good branding.
Also, I thought Tether was working with Lightning Labs to put USDT on Taproot Assets, is that not happening?

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Jolt was working on this.

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105 sats \ 0 replies \ @ca 6h

I have negative impressions about RGB

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105 sats \ 0 replies \ @BlokchainB 7h

RGB is so complicated

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Through our REST API and SDK, users can offer private USDT payments on Bitcoin without facing technical complexity directly.
Because execution does not require global consensus across a public blockchain, throughput and latency are predictable and suitable for payment flows.
More importantly, Utexo enables pre-defined fixed fees that can be set by the protocol in conjunction with the client’s needs.
This architecture allows USDT to operate natively on Bitcoin without wrapped assets, account-based smart contracts, or external Layer-1 dependencies, while keeping transaction data off public ledgers and preserving Bitcoin’s security model.

API and cloud based solutions make me wonder is this just another ark/spark thing using lightning as marketing ploy

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heilige scheiße

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3 sats \ 2 replies \ @Doung 5h -10 sats

Interesting. So Utexo is basically trying to make USDT feel more ‘Bitcoin-native’ using Lightning + RGB. I get the idea of keeping settlements anchored to Bitcoin for transparency, but I’m curious, if USDT is still custodial, does all this complexity really give any practical advantage over just sending USDT on Tron? Would love to hear what others think about this approach.