PANews reported on November 4 that in response to the question of whether Coinbase charges for listing coins , Sonic Labs co-founder Andre Cronje once again responded that he had not signed a non-disclosure agreement (NDA), so he was willing to disclose the "fee" requests sent by the Coinbase team through email, Telegram and Slack over the years. He pointed out that although Coinbase may call it an "earning fee" rather than a direct "coin listing fee", it actually still forms a coin listing cost.

Previously, Coinbase officials questioned whether Cronje might have contacted fake Coinbase employees, but Cronje said he had evidence and was willing to let the public judge for themselves.