Nope. Single-use-seals aren't necessarily implemented with the UTXO + Blockchain model.

The whole reason to come up with a term for the single use seal concept was to be able to talk about the whole class of solutions, rather than just the specific UTXO+blockchain model.

Some methods of implementing single use seals can scale _far_ better than Satoshi's model:

https://petertodd.org/2017/scalable-single-use-seal-asset-transfer

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Also see their use here by Robin Linus: https://x.com/btcillustrated/status/1664268065574637575

Dont mind nostr:npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6 , he is a drivechain supporter. We tried to seek help and support but docters say its chronic and we have to try to live with it as best as we can.

OK, I was wrong on that.