Blockchain is STILL a solution looking for a problem, other than enabling money laundering and incidently a speculative ponzi scheme. It's not scaleable to any reasonable number of transactions per day, never mind per minute.
I just remember a phrase and search for it. Faster than syncing two devices. No third party or internet needed.
Calibre to manage all the devices. I use the connection to also charge, so it's rarely extra use of the USB port.
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