Memories of Digital Data

When I started using a computer, I believed that digital data could be stored forever. I saved my favorite picture files and small free software files to floppy disks with a capacity of roughly 1 megabyte and stored them carefully. Those floppy disks were my treasure. Later, when the disks deteriorated and became unreadable or were lost, the data became memories with a deep feeling of loss.

Blockchains have arisen. Are these truly persistent?

After all, digital data are also a type of memories. They are stored in a person's mind, deteriorate, and one day will be lost with that person.

I fin...