Advice for BlockCypher users: If you’re accepting unconfirmed transactions and using BlockCypher’s own Confidence Factor to do so, it shouldn’t. We factor in Opt-In RBF and significantly penalize the confidence factor.
What Bitcoin Core 0.12 Means For Bitcoin Developers
Josh Cincinnati
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I’m confused by this statement. Doesn’t the RBF penalty make relying on the confidence factor safe?

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