I’m currently collecting historical material on a physical Gold Bitcoin experiment conducted by the Chinese Bitcoin community around 2014.
At the time, approximately 100 1 oz gold physical coins were produced, with 1 BTC embedded into each coin at creation. The experiment was non-commercial, had no public pricing, and no secondary market.
From an on-chain perspective, as of 2026, around 89% of the coins still retain their original 1 BTC, unspent. The 100 addresses originally loaded with 100 BTC now collectively hold approximately 405 BTC. During the same period, paper wallets and other non-gold physical Bitcoin formats did not show comparable long-term retention.
Participant behavior also showed a shift in cost perception. Initially, the cost was anchored around USD 2,500, derived from selling roughly 4 BTC at the time to fund production. As Bitcoin’s price increased, this anchor gradually shifted from fiat terms to “4 BTC”. Between 2017 and 2021, many participants sold their other Bitcoin holdings, while the BTC embedded in these gold coins remained untouched.
Whether factors such as sunk cost, physical form, or additional effort required to transfer funds influence long-term holding behavior remains an open question.
For archival referencet:
https://goldphysicalbitcoin.com