The original and most famous physical version of Bitcoins was Casascius Coin, created by a guy in Utah named Mike Caldwell, which made of brass, with gold electroplating. This coin comes in different shapes, designs and forms.
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A Casascius physical Bitcoin showing an eight-character code
(Source: casascius.com)This physical Bitcoins were pre-loaded or pre-funded with a certain amount of Bitcoin, such as 1, 5, 10, 100 or 1000 BTC. The coin also include both an identification number and a hidden private key.
The main reason for designing these coins was: - To be used for the purchase of goods or services
- To facilitate the storage and/or management of Bitcoin
- To make them available for market transactions
- To act as an investment vehicle
- To be used for the purchase of goods or services
However, in 2013, Caldwell had to shut it down. The reason for shutting down was because of the intervention of FINCEN due to lack of required licensing to operate.
Certainly, the fact and provenly discussed, Bitcoin is not a thing and will never have a physical form. But what if the world suddenly change and opt to in physical form, are we ready to embrace it?
Sources:https://phemex.com/academy/what-is-physical-bitcoinhttps://www.cnet.com/culture/are-physical-bitcoins-legal/https://www.analyticssteps.com/blogs/what-casascius-coinHate to break it to you, but physical Bitcoins are not really Bitcoin at all. They're just like paper wallets with public and private keypairs. Besides, using Bitcoin physically will defeat its purpose as "Peer to Peer Electronic Cash". It's like going backwards if you ask me. Casascius coins are just collector's items that were made in the very early days of Bitcoin. They're more suitable as a long-term investment than a currency.
With how fast the world is transitioning to the digital era, physical currency will become a thing of the past. Maybe even physical collectibles as NFTs prove to be a complete game changer. Most people think that Bitcoin has no value because it isn't something tangible like Fiat. I'd say Bitcoin has value because it's a decentralized and censorship-resistant cryptocurrency no one can shut down. Someday people will realize this as Bitcoin matures over time. Who knows how the future for the pioneer cryptocurrency will look like? Just my thoughts