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Proposal: dispute evidence extension for credential/receipt mismatches

Status: Open.

#359 In tempoxyz/mpp-specs;

· ak68a opened on Sep 16, 2026

Independent verification layer reading MPP credentials

Status: Open.

#358 In tempoxyz/mpp-specs;

· Ensi81 opened on Sep 16, 2026

HMAC challenge-id header slot: spec appends after opaque; SDKs insert before

Status: Open.

#357 In tempoxyz/mpp-specs;

· e-fu opened on Sep 16, 2026

stellar-charge: push-mode (type=hash) drops expiry check and has no challenge-to-transaction binding, enabling payment reuse

Status: Open.

#331 In tempoxyz/mpp-specs;

· memosr opened on Aug 22, 2026

card-charge: cached-200 replay branch contradicts step 6 and enables unauthenticated resource re-delivery

Status: Open.

#330 In tempoxyz/mpp-specs;

· memosr opened on Aug 22, 2026

RFC: picocash — an eCash payment method (offline-verified, lockable bearer tokens)

Status: Open.

#327 In tempoxyz/mpp-specs;

· starbackr-dev opened on Aug 21, 2026

Paid asynchronous MCP delivery has no required correlation to its payment receipt

Status: Open.

#317 In tempoxyz/mpp-specs;

· mh-yu opened on Aug 8, 2026

Lightning forwarding nodes can reuse deposit preimages to access paid sessions

Status: Open.

#311 In tempoxyz/mpp-specs;

· mh-yu opened on Aug 2, 2026

Lightning charge delivery failure after settlement may require a second payment

Status: Open.

#308 In tempoxyz/mpp-specs;

· mh-yu opened on Jul 31, 2026

Failed Lightning session refunds are paired with an ambiguous success receipt

Status: Open.

#307 In tempoxyz/mpp-specs;

· mh-yu opened on Jul 30, 2026

Receipt reference/settlement semantics undefined for fiat card-class methods

Status: Open.

#292 In tempoxyz/mpp-specs;

· schwentker opened on Jul 4, 2026

EVM Charge: Remove externalId in Permit2 Payment Witness Struct

Status: Open.

#287 In tempoxyz/mpp-specs;

· Xeift opened on Jun 24, 2026