Why Does the Number of Required Confirmations Increase with Transaction Value?
The number of required confirmations increases with transaction value because the financial risk of a double-spend attack also increases. For a high-value transaction, the economic incentive for an attacker to attempt a chain re-organization is higher.
Requiring more confirmations exponentially increases the cost of a successful attack, making it economically irrational.
Glossar
Transaction Value
Assessment ⎊ This is the nominal denomination of the asset being transferred within a transaction, representing the economic quantum being moved across the ledger.
Confirmations
Finality ⎊ In blockchain environments, the number of subsequent blocks appended after a transaction's inclusion dictates the level of assurance regarding its permanence.