With the launch of support for multiple networks, customers will be credited for certain assets that were previously lost due to being sent when the network was unsupported. This applies to the following:
ETH, MATIC, or USDC previously sent on the Polygon network
DAI, ETH, or WBTC previously sent on the Optimism network
What to expect
If you previously sent a qualifying asset on one of the networks that's now supported:
You’ll be credited automatically with no action needed on your part
You’ll receive an email from Coinbase advising that you received funds (it will look similar to the standard Receive Confirmation email)
You’ll receive the standard "receive" push notification
You can see the details and link to the block explorer in your transaction history for the date that the transaction was initially sent (not the date it was credited to your Coinbase account)
Example: If you sent 1,000 USDC on the Polygon network to your Coinbase account on February 1, 2020, you’ll find the details by reviewing your transaction history for this date
You’ll receive the amount of crypto that was sent on the original send date, not the value that it was worth on that date
Example: If you sent 1,000 MATIC on the Polygon network to your Coinbase account on December 26, 2021 when the price was $2.92, the funds would've been worth ~$2,920 at that time. When we later launched Polygon network support, you would’ve received 1,000 MATIC, which would’ve been worth the value at the time it was credited to your account.