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according to https://testnet.etherscan.io/, the last block has been mined more than 12 hours ago, whereas before more than one were mined per minute. Has the difficulty changed so much ? Or has the testnet problems ?

marked as duplicate by eth Nov 21 '16 at 3:42

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The testnet was reset due to various complications, one being a consensus issue between Geth and Parity. You can read about it here:


See the bottom of the page for instructions on running on the new testnet, Ropsten.

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