Thanks to the hard work of some other players we have the full code to claim a free challenge coin reward to our accounts.

Claim your coins here:
https://robertsspaceindustries.com/en/comm-link/transmission/21285-Pirate-Week-2026

The code:
7-AQ42-0829-4567-15-RDFE4587-324-L6

Kudos to redditor u/-Mercurial_Me- for keeping his comment up to date with information as new hints were revealed.