If by "entire open source projects" you mean all projects in the world then the answer is definitively "no." Not all bounties are public and even the public one

If by "entire open source projects" you mean all projects in the world then the answer is definitively "no." Not all bounties are public and even the public ones aren't recorded in any standardized way in any one ledger. It sometimes happens that bug-hunters discreetly approach FOSS projects with security-relevant fixes and then ask for a bounty for having found them, and there's no record of such events beyond private emails.