BOLT 12: clarify that empty offer_chains must be rejected #1306
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An offer with offer_chains present but containing zero chain hashes is invalid, as it makes invoice requests impossible—the payer cannot satisfy the requirement to set invreq_chain to "one of offer_chains" when the array is empty. Add explicit requirement for readers to reject such offers, along with rationale and a test vector.
t-bast
approved these changes
Dec 15, 2025
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An offer with
offer_chainspresent but containing zero chain hashes is invalid, as it makes invoice requests impossible. The payer cannot satisfy the requirement to setinvreq_chainto "one ofoffer_chains" when the array is empty.Add explicit requirement for readers to reject such offers, along with rationale and a test vector.
Closes #1282