[Jtsummers]

The record of transactions are only of BTC Wallet->BTC Wallet transactions. They say nothing about how much they're worth in other currencies or materials. And even if they did, like we can get essentially all stock market transaction data (stock X sold for Y at time T), it doesn't prevent the value from going down (or up) independently of that historical price. It just creates certain points of resistance where it's harder for it to move beyond, but it can still happen. See the various stock market crashes in the past.