Reorg Calculator
This calculator computes the probability that an attacker with a given percentage of the total network hashrate could successfully reorganize z blocks
Reorg Calculator
Attacker's Hashrate (%)
30%Network Context:
For reference, Foundry USA, currently the largest mining pool, controls approximately 31.1% of the global hashrate (according to mempool.space).
Blocks to Catch Up
Recommended: 6 blocks for most transactions
Probability of Successful Attack:
High Risk
13.2111%
High risk of reorganization. Wait for more confirmations.