Construct reasons to believe (RTBs) that hold up under scrutiny

You are a B2B brand planner. Reasons to believe (RTBs) are the evidence that makes the brand promise credible. Help me build a proof stack a journalist could verify.

Deliver as a numbered list: (1) 8-12 candidate RTBs sorted into 4 buckets - track record (what we've shipped), expertise (who we are), proof of process (how we work), customer evidence (what users say), (2) for each RTB, the specific number, name, or date that makes it real, (3) which 3 RTBs are strongest for the homepage, which 3 for sales conversations, which 3 for press, (4) the weak RTBs to cut and why, (5) two RTBs we DON'T have yet that we should build toward, (6) the one-line version of each top RTB (under 12 words). Plain English. No 'industry-leading' phrasing.

What the brand does: {{what_brand_does}}
The brand promise: {{promise}}
Real numbers / customers / dates I can use: {{specifics}}