Weekly Check-in: Week of 2026-10-26

[payjoin-robot[bot]]

Weekly standup — comment /check-in by end-of-day Monday (your timezone) for an auto-gathered activity thread.

Copy the template below and fill it in:

### Shipped
<!-- Add anything the bot missed: design work, specs, conversations, off-GitHub contributions. Correct any mistakes. Skip if the bot covered everything. -->

### Focus
What are you working on this week?

### Bottleneck
What is the single biggest bottleneck in progress toward your greater goal?
Name your goal. Name the constraint. Name who or what can unblock it.

Participated: @chavic, @caarloshenriq, @xstoicunicornx

[chavic]

/check-in

[payjoin-robot[bot]]

Shipped

No activity found.

Auto-detected signals:

• PR has requested changes: Share one payjoin concept description across READMEs

[chavic]

Shipped

In review (BTCPay Payjoin plugin, own):

• Wallet-side async payjoin sending moved #113

Merged BTCPay Payjoin plugin (own):

• Bump btcpayserver to 4142b3a15 for patched framework packages, so the NuGet audit stops failing CI. #230

Reviews (BTCPay Payjoin plugin, merged):

• Show async payjoin outcome on invoices. #126
• Skip unsupported receiver UTXOs, so one unsupported script no longer aborts candidate construction. #212
• Validate original Payjoin amounts before receiver contribution. #214
• Preserve unknown prevout ownership in receiver sessions. #219
• Limit relay response body buffering. #215
• Test rollback and replay for competing receiver sessions. #213

Reviews (BTCPay Payjoin plugin, open):

• Validate original payjoin broadcastability before receiver contribution. #216
• Bound ownership lookups and tune receiver defaults. #218
• Support Payjoin with global checkout extensions. #200

Focus

• Get a re-review on #113, either close or finish this week
• Movement on the uniffi-dart and second-tier priority items
• #1864 and #1866 through review. Carried.
• Reviews

Blockers

• Progress with btcpay is waiting for a response to comments. Last two weeks' backlog items may need reprioritizing too

[caarloshenriq]

/check-in

[payjoin-robot[bot]]

Shipped

PRs opened:

• Add FFI session event log fuzz target

PRs reviewed:

• Remove tar as a dependency in payjoin-test-utils
• Generalize the dependabot action directories
• Handle clock stepping back in mailbox prune
• Fix short gateway path panics
• Fix outputs exceed inputs
• Accumulate receiver input contributions across calls
• 0.2: owned Uri BIP 321 parser with optional body address

Auto-detected signals:

• PR has requested changes: Add FFI session event log fuzz target

[caarloshenriq]

Focus

• keep working on Tracking fuzzing candidates #1267
• Review PRs

Bottleneck

None

[xstoicunicornx]

/check-in

[payjoin-robot[bot]]

Shipped

PRs reviewed:

• Seal fallback_tx and deprecate extract_tx_to_schedule_broadcast
• Fix outputs exceed inputs
• Accumulate receiver input contributions across calls
• Lock and remap Dart native builds for reproducibility

Auto-detected signals:

• PR has requested changes: Classify Payjoin settlements on the Monitor typestate

[xstoicunicornx]

Shipped

• Redesigned Classify Payjoin settlements on the Monitor typestate #1971

Focus

• Merging Classify Payjoin settlements on the Monitor typestate #1971
• Many PRs waiting for my review
• Review latest push Add Payjoin Receiver Support (BIP 77) lightningdevkit/ldk-node#746

Bottleneck

Currently out of town and only really able to login in the evenings.

[benalleng]

/check-in

[payjoin-robot[bot]]

Shipped

PRs merged:

• Replace corepc-node with bitcoind 0.43.2
• Verify builtins.match for mailroom in flake

PRs opened:

• Generalize the dependabot action directories
• Remove tar as a dependency in payjoin-test-utils
• Replace corepc-node with bitcoind 0.43.2

PRs reviewed:

• Add FFI session event log fuzz target
• chore: update flake.lock
• chore: update cargo.lock
• 0.2: owned Uri BIP 321 parser with optional body address
• Move long-running FFI CI jobs to cron and release only
• Bump payjoin-ffi to 0.25.1
• Fix failing reproducibility checks
• Bump the github-actions group across 2 directories with 3 updates

Auto-detected signals:

• PR awaiting review: Generalize the dependabot action directories
• PR awaiting review: Remove tar as a dependency in payjoin-test-utils

[benalleng]

Focus

• going to try to regroup on the mailroom manager, we had a lot of discussion in lugano about the correct shape but I feel like there are still some in answered questions

Bottleneck

• I will be out today so I will miss the call

[ValeraFinebits]

/check-in

[payjoin-robot[bot]]

Shipped

PRs opened:

• Add BTCPay plugin and Bitcoin Core integratinon fork to check-ins

Auto-detected signals:

• PR awaiting review: Add BTCPay plugin and Bitcoin Core integratinon fork to check-ins

[ValeraFinebits]

Focus

• Continue working on the BTCPay Server Payjoin plugin.
• Continue working on the Bitcoin Core Payjoin integration.

[spacebear21]

/check-in

[payjoin-robot[bot]]

Shipped

PRs merged:

• Move long-running FFI CI jobs to cron and release only
• Fix failing reproducibility checks
• Bump payjoin-ffi to 0.25.1
• Unwrap paragraphs in mailroom operator issue form
• Mailroom operator issue form
• Remove version tags from mailroom operator cards

PRs opened:

• Move long-running FFI CI jobs to cron and release only
• Fix failing reproducibility checks
• Bump payjoin-ffi to 0.25.1
• Unwrap paragraphs in mailroom operator issue form
• Mailroom operator issue form
• Remove version tags from mailroom operator cards

PRs reviewed:

• Classify Payjoin settlements on the Monitor typestate
• Replace corepc-node with bitcoind 0.43.2
• Verify builtins.match for mailroom in flake

Issues opened:

• Tracking: Build reproducible shared native libraries for all language bindings