#البيتكوين witnessed a blockchain reorganization of 2 blocks. Should you panic?

This phenomenon occurs on the Bitcoin network due to its decentralized nature sometimes, and only affects transactions that have one or two confirmations within what is called "orphaned blocks" where their mining is nullified.

Most of these transactions:
- Return to the temporary waiting list (mempool)
- And are added back to it shortly after
- Therefore, nothing is "lost" - it's only temporarily reorganized.

For this reason we always say: wait for 6 confirmations when receiving large amounts to cold wallets (5 blocks above your transaction block ~ one hour) to ensure the transfer is stable in the Bitcoin ledger

Foundry managed to mine 7 consecutive blocks, and rewrote 2 blocks belonging to AntPool and ViaBTC out of the record.

- At blocks 941881–941882, Foundry and AntPool/ViaBTC were racing on two competing chains at the same time.
- Foundry won, and its chain became the best chain. As for AntPool and ViaBTC blocks, they became invalid.
- They are now orphaned blocks (Orphaned), and will not be part of the permanent record.
- The matter can be verified and monitored through fork.observer

Block reorganization (Reorg):

- Bitcoin's rule is simple: the chain that has the largest cumulative amount of computational power is the one that wins.
- Sometimes two miners find a valid block at almost the same time.
- A temporary split occurs in the network, where some nodes follow one chain, while others follow a different chain.
- This tie is broken when one of the miners mines the next block on top of one of the two chains, so the longer chain wins.
- As for the losing blocks, they become "stale" and are completely ignored.
- And their miners receive no reward.
- A reorganization of 2 blocks means that this competition continued across 2 consecutive blocks before it was settled. This is rare, but not unprecedented.
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