howopentimestampscarbornalmosttheentirewebwithonebitcointx – Bitcoints


Published on May 26th, 2017 | by bitcoin



The OpenTimestamps team has timestamped every item in the Internet Archive –
about 750,000,000 files in total – and made those timestamps publicly
available via a searchable
Let’s look at an example attack on the archive, how a timestamp could prevent
it, and finally, the tech details behind this effort.
The OpenTimestamps proofs we’ve generated are
traceable back to the Bitcoin blockchain, a widely witnessed data structure with
timestamps that can’t be backdated.
Generating the Merkle Tree

There have been a lot of ridiculously inefficient Bitcoin timestamping schemes,
using one, or even
Bitcoin transactions per timestamp.
Web Captures

Behind the scenes the Wayback Machine uses the Web ARChive (WARC) archive format to
archive web crawl data.


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