http://hctxrvjzfpvmzh2jllqhgvvkoepxb4kfzdjm6h7egcwlumggtktiftid.onion/collector.html
BridgeDB receives bridge network statuses from the bridge authority,
assigns these bridges to persistent distribution rings, and hands them out
to bridge users.
BridgeDB periodically dumps the list of running bridges with information
about the rings, subrings, and file buckets to which they are assigned to
a local file.