I searched already but I couldn't find anything about the structure of a bitcoin.
My understanding is that a bitcoin, which is different AFAIK from a bitcoin address, can be interpreted as a string of numbers and characters (alphanumeric). How long is a bitcoin string (min/max)?
I found here (https://blockexplorer.com/block/000000000000000002109f32aeac7a036232b0116f939326651e739a28e6d6b6) now a size of: 934325 bytes for a particular bitcoin. Could this be the length of the particular bitcoin?
PS: I searched always for length and not for size...