The shared private key would also be no problem, I would transfer the coins out immediately.
Even a 1=>1 Transaction would be fine if the origin address signs a message of my choice.
Basically just need coins from an aged transaction and the ability to sign a message from that old address.
Even a 1=>1 Transaction would be fine if the origin address signs a message of my choice.
Basically just need coins from an aged transaction and the ability to sign a message from that old address.
This makes sense. In the 1 => 1 transaction you could include an OP_RETURN Output with a message stating this. An example:
https://blockchair.com/bitcoin/transaction/1de99d383743158acfc2d2a21231c226df23c24c1ba4aa1059addcf5e1b348b5
PMed you more details.