feat: add mints_strict field to payment requests - #2007
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Added changes so it matches: cashubtc/nuts#381 |
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The nut has been updated: |
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #2007 +/- ##
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+ Coverage 73.98% 74.05% +0.06%
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Files 362 362
Lines 83619 84240 +621
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+ Hits 61866 62383 +517
- Misses 21753 21857 +104 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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Noted by my agent when checking compliance to current spec: Melt check already binds to the request unit.
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Add the strict mint flag, fee reserve, and supported payment methods to the NUT-18 payment request model and builder. Encode the new fields in NUT-26 TLV records and expose them through the wallet defaults, FFI wrapper, fuzz generator, and encoding benchmark.
Use the updated mp field and preferred-polarity naming for NUT-18 payment requests. Enforce strict mint lists, add fee reserve when using unlisted preferred mints, and document the field semantics.
Replace the flat fee reserve with `sm` method objects carrying optional `mf` values, and encode them as NUT-26 supported-method sub-TLVs on tag 0x0a. Apply method fees when paying from an unlisted mint, or from any mint when the request has no mint list. Select the lowest fee among matching NUT-05 melt methods and keep requested amounts net of input fees. Cover the current NUT-18 and NUT-26 spec vectors, including the preferred-method-fee cases. Accept the standard-base64 NUT-18 vectors published by the spec while continuing to emit urlsafe CREQ-A strings.
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Ports the request-creation plumbing from cashubtc#1925. Co-authored-by: a1denvalu3 <43107113+a1denvalu3@users.noreply.github.com>
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Description
Adds mints_strict (ms) field to PaymentRequest as specified in NUT-18 and NUT-26 PR: cashubtc/nuts#381
When ms is absent or true (default), the recipient MUST reject payments from mints not in the mint list. When ms is false, the mint list is a suggestion for the payer.
NUT-26 (bech32m) encoding adds TLV tag 0x09 for this field.
Notes to the reviewers
The field is serialized with skip_serializing_if = "Option::is_none" so existing encoded payment requests remain valid — absence of the tag is equivalent to true (strict mode), consistent with the proposed spec default.
Suggested CHANGELOG Updates
CHANGED
ADDED
Checklist
just quick-checkbefore committingcrates/cdk-ffi)