Replicate the testnet blockchain

According to the Libra whitepaper:

In addition, a client can optionally create a replica of the entire database by synchronizing the
transaction history from the validators. While creating a replica, a client can verify that validators
executed transactions correctly, which increases accountability and transparency in the system. Other
clients can read from a client that holds a replica in the same way they would read from a validator
to verify the authenticity of the response. For the sake of simplicity, the rest of this paper assumes
that clients query a validator directly rather than a replica.

How can I begin to synchronize transaction history from testnet validators?

Hi omar, we are actively working on development for easier full-node synchronization and hope to have it ready soon. In the meantime, the best way to pull data from a node would be via the txn_range query from here: https://developers.libra.org/docs/reference/libra-cli

Hello @kph, is there any news on the topic?

@pega the work is currently ongoing by the Calibra team. We hope to have something we can publish soon