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What is a Hard Fork?

Hard Fork is a mandatory software update permanently diverging within the Blockchain. Non-upgraded nodes within the Blockchain cannot validate blocks of transactions without updating their software.…

Hard Fork is a mandatory software update permanently diverging within the Blockchain. Non-upgraded nodes within the Blockchain cannot validate blocks of transactions without updating their software. The hard fork would cause a split in the chain and thus creating two separate coins that are not compatible with one another – this update is irreversible.

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  • Glossary

From the CryptoCanucks archive. Originally published at cryptocanucks.com/what-is-a-hard-fork/ and restored in 2026 with its original byline and date. Some images from the original could not be recovered.