If the UK issues its own britcoin, it will be just another stablecoin, though of course a special one
I'm not so sure about that. I have a suspicion that it could conceivably bring an end to conventional stablecoins.
Consider, if nations start issuing their own CBDCs, they probably won't have much tolerance for corporations using their own private assets to issue competing tokens. Governments won't want to compete on a level playing field and will naturally want dominance of their CBDC. They could easily create a hostile regulatory environment for private corporate tokens (because centralised entities are easier to regulate than something decentralised like Bitcoin), making stablecoins less attractive for users. After all, why compete with stablecoins when you can just make them obsolete?
looks like what you said here is already happening. they want to make stablecoins obsolete by creating unicoin.
Universal Monetary Unit Model Law legislation has been drafted in collaboration with several sovereign states which dictates that UMU should not be enacted as legal tender for negotiating domestic prices or international trade agreements.
DCMA executive director Darrell Hubbard, and the “chief architect” of UMU, says UMU strengthens the international monetary system by helping the IMF achieve its stated mandate to provide economic and financial stability to its member states.
“UMU is a game-changer in how cross-border payments are transacted and mitigates against seasonal and systemic local currency depreciation,” Hubbard says.
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https://www.fintechfutures.com/2023/04/digital-currency-monetary-authority-launches-international-cbdc/Currently, global banking recognizes two legal forms of cash: regulated e-cash and physical cash. Bitcoin’s electronic cash hasn’t been widely adopted in banking because it doesn’t cryptographically represent either of these.
However, the DMCA’s UMU/Unicoin currency is explicitly designed to work with financial and monetary institutions. However, UMU will not be a legal tender for negotiating domestic prices or international trade agreements. Instead, it will function as a store of value, mitigate currency devaluation, and be used as a method of payment.
UMU has premium exchange rates built into its wallet and can convert any settlement currency amount to the equivalent UMU amount. Its creators hope that one day merchants could accept UMU for the equivalent market value for their goods and services priced in any national legal tender.
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https://beincrypto.com/whats-deal-new-international-cbdc-unicoin/this is the reason why unicoin will fail, people are smart, and they will only choose bitcoin to protect value.