1.1.5 Chia Blockchain Released

Active Chia farmers may have noticed some sluggishness in the blockchain sync recently. As it turns out, there may have been nefarious actors at play, or perhaps a bug. In either event, the blockchain we being messed with by inserting coins with negative values. This took place at block 255518 a little after midnight eastern. The Chia team quickly iterated a hotfix, 1.1.5 Chia Blockchain has been released. All Chia farmers need to upgrade to 1.1.5 as soon as possible.

Active Chia farmers may have noticed some sluggishness in the blockchain sync recently. As it turns out, there may have been nefarious actors at play, or perhaps a bug. In either event, the blockchain we being messed with by inserting coins with negative values. This took place at block 255518 a little after midnight eastern. The Chia team quickly iterated a hotfix, 1.1.5 Chia Blockchain has been released. All Chia farmers need to upgrade to 1.1.5 as soon as possible.

For more information on what went down, here are the release notes:

We were not checking for negative values in the uint64 constructor. Therefore coins with negative values were added to the mempool. These blocks passed validation, but they did not get added into the blockchain due to negative values not serializing in uint64. Farmers making these blocks would make blocks that did not make it into or advance the chain, so the blockchain slowed down starting at block 255518 around 6:35PM PDT. The fix adds a check in the mempool and block validation, and does not disconnect peers who send these invalid blocks (any peer 1.1.4 or older), making this update not mandatory but is recommended. Users not updating might see their blocks get rejected from other peers.

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