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da5d707f49
This is required by BOLT 2 to ensure that no attacker can simply relay every public node a duplicate-payment_hash HTLC for each HTLC it receives to deduce where an HTLC came from. Note that this makes the claim logic much less incentive-compatible as we will not claim all available HTLCs with the same payment_hash even if we know the preimage! This is OK because, most likely, any attackers trying to map the network will use small-value payments and, hopefully, we will move away from constant hashes across an entire payment at some point in the near future. This further simplifies the payment transition state a bit, so hopefully at least we got some readability out of all of this |
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