It sounds like you are talking about the price of bitcoin and the number of bitcoins that are traded on an exchange causing a price drop. Exchanges don't trade their transactions on the blockchain until someone withdraws their bitcoin from the exchange, so you wouldn't see a surge in volume on the blockchain. In short, it is unlikely in the extreme that you would see a surge in volume on the blockchain coinciding with the surge in volume and drop in fiat price.
(It seems like the drop was due to another PBOC meeting with exchanges, see e.g.:
https://bitcointalksearch.org/topic/20170208-breaking-bitcoin-exchanges-held-to-closed-door-meeting-chinas-1782476
)
Topic: Determining Transactions by Date and Time (Read 412 times)
Transactions do not have a date and time. Because Bitcoin is an asynchronous there is no definite date and time for a transaction except the block it is included in. All that nodes know for the date and time of a transaction is when it received it, but that is not necessarily the actual time the transaction was created and broadcast.
I was looking at the price of Bitcoin suddenly drop today at around 8:00 UTC Feb. 8, 2017 and questioned whether it is possible to search blockchain.info or some other source to determine if this sudden surge in volume was the result of transactions from a single Bitcoin address. Does anyone know of a resource to look at transactional data only by identifying a specific time range on the blockchain?
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