offers: BLIP 42 contacts with BIP 353 receive side and cross-compat vectors#89

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vincenzopalazzo wants to merge 10 commits into

blip42-basefrom

blip42-feature-complete

Commits on Jun 9, 2026

Add contacts module for Lightning offer contact management
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Add experimental TLV fields for invoice requests: invreq_contact_secret, invreq_payer_offer
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blip42: Add contact secret and payer offer support to invoice requests
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offers: introduce ContactSecret newtype and BLIP 42 TLV-type consts

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claude
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offers: move InvoiceRequestFields BLIP 42 TLVs to odd numbers (7, 9)

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offers: derive BLIP 42 contact secrets from our offer signing keys

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offers: validate BLIP 42 payer offers when building and parsing invreqs

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Commits on Jun 10, 2026