I've always taken this to mean, the chain "with the greatest proof-of-work" that adheres to the paper. If it doesn't adhere, the length of the chain is inconsequential.
follows the 21-million coin creation schedule, and has the most cumulative double-SHA256-proof-of-work.
the genesis block (hash 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f)...
“Bitcoin” is the ledger of not-previously-spent, validly signed transactions contained in the chain of blocks that begins with...
