Cash App, Square, and Bitkey, all part of Jack Dorsey’s Block, are kicking off Bitcoin Day, a $1 million Bitcoin giveaway encouraging users to buy, spend, and self-custody the digital asset through their platforms.

The campaign, teased last Friday, runs from April 6 through April 10 but it will close early if $1 million in Bitcoin is fully claimed, as noted by the team.

The event promises instant bonuses for users who perform at least one of three actions: buying Bitcoin on Cash App, spending Bitcoin at participating Square merchants, or self-custodying BTC through the Bitkey app.

Each bonus is applied immediately to the user’s Cash App Bitcoin balance, and customers can earn a maximum of $80 in total bonuses by completing all three actions.

To participate, users must be at least 18 years old, have a US address, maintain a Cash App account in good standing, and complete KYC verification. New York residents are allowed to buy Bitcoin but cannot take part in the spending or ownership features.

Block currently owns 8,883 BTC worth about $616 million, ranking it as the 14th-largest public company that holds the digital asset.