The public address that is printed on the BGC036 chip "1xBTC1E3uJ" is actually listed as the public address for BGC051 chip:
https://collectible.money/search?q=1xBTC1E3uJ36vXFBr39MDJKz5tbi9qQcb
https://mempool.space/address/1xBTC1E3uJ36vXFBr39MDJKz5tbi9qQcb
So this key got swept when the other collector redeemed the batch of chips on December 25 2024
Key/address mix-up
Then if we check the the address that is associated to the key underneath, it gives:
"1xBTCA2jLuX1qgKLH9vytw2ebthDf6xFq"
https://collectible.money/search?q=1xBTCA2jLuX1qgKLH9vytw2ebthDf6xFq
https://mempool.space/address/1xBTCA2jLuX1qgKLH9vytw2ebthDf6xFq
This address never got funded
Following up on this post...
I received a picture of the public address hologram and confirmed the private key for chip BGC051
With this information, it has been determined that the key pairs were swapped and the one chip never was funded, but should have been.
Unless I misread, in actuality this issue appears to have stemmed from a duplicate public address (1xBTC1E3uJ36vXFBr39MDJKz5tbi9qQcb) and not the private keys themselves as both BGC036 (1xBTCA2jLuX1qgKLH9vytw2ebthDf6xFq) & BGC051 (1xBTC1E3uJ36vXFBr39MDJKz5tbi9qQcb) did indeed have separate private keys that corresponded with the expected, different public addresses- verified by peeling and checking against the address list. It seems if the owner of BOC036 would have checked the public address against the address list provided by the maker, they would have seen the duplicate address with BOC051 and could have reached out to the maker to remedy. The maker could have then either applied the hologram with the correct address or issue a new chip. Let me know if I missed the mark in understanding or confused something.