but it'd be viral so be universal. Merchents and absolutely everyone would all quickly start checking just to ensure they don't get coins they can't trade, making it effectively universal.
Which means it comes down to convincing the gatekeeper that you were burgled. But that's a human level problem.
and whoever that controlled that list would basically control bitcoins, because they could charge a levy or else they'd put your bitcoin into that list.
Which means it comes down to convincing the gatekeeper that you were burgled. But that's a human level problem.