What Is a “Confirmation Depth” and What Is a Common Industry Standard?

Confirmation depth is the number of blocks that have been added to the blockchain after the block containing a specific transaction. A depth of six means the transaction is six blocks deep.

A common industry standard, especially for Bitcoin, is six confirmations, as the probability of a six-block re-org is statistically insignificant under normal network conditions. Higher value transactions may require a greater depth.