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    Home»Ethereum»From Morden to Ropsten | Ethereum Foundation Blog
    Ethereum

    From Morden to Ropsten | Ethereum Foundation Blog

    Team_SimonCryptoBy Team_SimonCryptoFebruary 3, 2025No Comments2 Mins Read
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    Testing a fork

    The Spurious Dragon hardfork is scheduled for the approaching week; block 2675000 is prone to happen Tuesday night (CET). The block quantity for the testnet “Morden” was scheduled at block 1885000. Performing the fork within the take a look at community previous to performing it in the primary community was an vital measure taken within the testing course of to make sure a easy rollover into the post-fork state.

    The Morden fork occurred on Nov-20-2016, 06:12:20 +UTC, at block 1885000 as deliberate.  A bit later, at block 1885074, there was a consensus subject between Geth and Parity.

    Morden replay safety

    The Morden testnet has been working for the reason that launch of the Ethereum blockchain (July 2015). At the moment, issues about replay-attacks between Morden and Mainnet have been addressed through the use of a nonce-offset. All accounts on Morden used a beginning nonce of 2^20 as a substitute of 0, guaranteeing that any transaction legitimate on one chain wouldn’t be legitimate on the opposite.

    EIP 161 specifies new EVM guidelines concerning nonces. The implementation of these guidelines, together with Morden-specific nonce-rules, resulted in Geth and Parity creating incompatible blocks at block 1885074.

    Penalties for the Principal community

    All points discovered throughout the rollout of Spurious Dragon on the take a look at community have been Morden-specific. There are presently no recognized points affecting the Mainnet.

    Beginning the brand new “Ropsten” take a look at community

    Earlier than the present laborious forks, there have been already discussions about restarting the take a look at community from a brand new genesis block so as to make full syncing less complicated and fewer useful resource intensive. And because of the low issue of the testnet, the issue bomb was already inflicting noticeable will increase in block occasions, which might proceed to develop if unaddressed. So the time is now proper to go away Morden behind and begin a brand new take a look at community.

    New shoppers will likely be launched that use Ropsten as a substitute of Morden because the default testnet.

    Builders who wish to get began with Ropsten immediately can obtain the genesis file here, and begin a shopper with the Ropsten community id:3

    • geth: geth –datadir /path/to/testnet/knowledge init genesis.json; geth –datadir /path/to/testnet/knowledge –networkid 3 console
    • parity: Obtain ropsten.json, then parity –chain path/to/ropsten.json



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