I don’t want to contribute to the FUD but the poster is alleging that this was an under duress signal and that this was set up to alert everyone. The date on the screenshot I posted is from 5/31
There’s some less editorialized discussion here

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Boltz Exchange warrant canary expires , days later they announce end of services \ stacker news
Boltz ends service citing technical challenges, though the expiration of their warrant canary is not being discussed and brings suspicion to what r...