Weekly Check-in: Week of 2026-07-20

[payjoin-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: @DanGould, @chavic, @caarloshenriq, @benalleng, @spacebear21, @xstoicunicornx

[DanGould]

/check-in

[payjoin-bot]

Shipped

PRs merged:

• Allow standup without contributor list
• Delete .github/standup-contributors.yml

PRs reviewed:

• Expose proposal txid stability on receiver states
• Add kind accessors to receive candidate errors

Auto-detected signals:

• PR awaiting review: Add service.instance.id to mailroom telemetry resource
• PR has requested changes: Pre-1.0 Doorkeeper for SessionOutcome in

[chavic]

/check-in

[payjoin-bot]

Shipped

PRs merged:

• Pin bindings CI to the maintained lockfile

Auto-detected signals:

• PR has requested changes: Expose proposal txid stability on receiver states

[chavic]

Shipped

Merged BTCPay Payjoin plugin (own):

• Reconcile the final transaction onto its own payment record, no double-credit or fallback conflict. Second of the settlement cluster in; the atomic pinning PR rebases on top next. [#72](Reconcile the final transaction onto its own payment record ValeraFinebits/btcpayserver-payjoin-plugin#72)
• Sign the original PSBT before requesting a payjoin proposal. Both test payers handed the sender an unsigned original, so every test session carried an unbroadcastable fallback. [#91](Sign the original PSBT before requesting a payjoin proposal ValeraFinebits/btcpayserver-payjoin-plugin#91)

Merged rust-payjoin:

• Pin bindings CI to the maintained lockfile. A fresh tokio resolve was breaking the Windows C# job on every PR. [#1748](Pin bindings CI to the maintained lockfile #1748)

Closed rust-payjoin:

• Kind accessors on receive candidate errors. Maintainer review showed every reachable failure collapses to one variant per method, so the accessors are unnecessary; the plugin's selection catch is dead code and the fix moves there instead. Add kind accessors to receive candidate errors #1717

Focus

• Considering adding wallet-side payjoin, so stores can send payjoins, not just receive them.

Blockers

• The rest of the plugin stack awaits review and merge: settlement pinning, accounting reset, grace period and operator retry, OHTTP key refresh, segwit enforcement, fallback broadcast, and fee estimation.
• Expose proposal txid stability on receiver states #1718 awaits review; it is the machine-readable signal behind the segwit policy in #78.
• C# NuGet packaging workflow Prepare release-ready C# NuGet package workflow #1707

[ValeraFinebits]

Shipped

PRs reviewed:

• Reconcile the final transaction onto its own payment record ValeraFinebits/btcpayserver-payjoin-plugin#72
• Give armed settlement records a grace period and an operator retry ValeraFinebits/btcpayserver-payjoin-plugin#74
• Pin settlement expectations atomically and verify them before crediting ValeraFinebits/btcpayserver-payjoin-plugin#75
• Reset the accounting record when a receiver session is recreated ValeraFinebits/btcpayserver-payjoin-plugin#76
• Refresh cached OHTTP keys sooner and on session build failure ValeraFinebits/btcpayserver-payjoin-plugin#77
• Bump Microsoft.CodeAnalysis.Common and 4 others ValeraFinebits/btcpayserver-payjoin-plugin#83
• Bump Microsoft.EntityFrameworkCore.Design from 10.0.6 to 10.0.9 ValeraFinebits/btcpayserver-payjoin-plugin#84
• Bump Microsoft.EntityFrameworkCore.InMemory from 10.0.8 to 10.0.9 ValeraFinebits/btcpayserver-payjoin-plugin#85
• Bump Microsoft.EntityFrameworkCore.Sqlite from 10.0.8 to 10.0.9 ValeraFinebits/btcpayserver-payjoin-plugin#86
• Bump Microsoft.NET.Test.Sdk from 18.5.1 to 18.7.0 ValeraFinebits/btcpayserver-payjoin-plugin#87
• Bump Npgsql.EntityFrameworkCore.PostgreSQL from 10.0.1 to 10.0.3 ValeraFinebits/btcpayserver-payjoin-plugin#88
• Bump NSubstitute from 5.3.0 to 6.0.0 ValeraFinebits/btcpayserver-payjoin-plugin#89
• Sign the original PSBT before requesting a payjoin proposal ValeraFinebits/btcpayserver-payjoin-plugin#91
• Prepare release-ready C# NuGet package workflow #1707

PRs merged:

• Reconcile the final transaction onto its own payment record ValeraFinebits/btcpayserver-payjoin-plugin#72
• Bump Microsoft.CodeAnalysis.Common and 4 others ValeraFinebits/btcpayserver-payjoin-plugin#83
• Bump Microsoft.EntityFrameworkCore.Design from 10.0.6 to 10.0.9 ValeraFinebits/btcpayserver-payjoin-plugin#84
• Bump Microsoft.EntityFrameworkCore.InMemory from 10.0.8 to 10.0.9 ValeraFinebits/btcpayserver-payjoin-plugin#85
• Bump Microsoft.EntityFrameworkCore.Sqlite from 10.0.8 to 10.0.9 ValeraFinebits/btcpayserver-payjoin-plugin#86
• Bump Microsoft.NET.Test.Sdk from 18.5.1 to 18.7.0 ValeraFinebits/btcpayserver-payjoin-plugin#87
• Sign the original PSBT before requesting a payjoin proposal ValeraFinebits/btcpayserver-payjoin-plugin#91

Issues opened:

• Assess the existing OHTTP key cache ValeraFinebits/btcpayserver-payjoin-plugin#90

Focus

• Continue working on the plugin.

[caarloshenriq]

/check-in

[payjoin-bot]

Shipped

PRs reviewed:

• Fix mrsv lint warnings
• Add and Revise Receiver Interface Comments
• Bump payjoin to version 1.0.0-rc.5
• Rename PersistedError::error_state to fatal_state

[caarloshenriq]

Focus

• finish feat: port payjoin core to no_std #1615 pr
• continue working on harness test
• review PRs

[benalleng]

/check-in

[payjoin-bot]

Shipped

PRs merged:

• Remove Receiver::SessionEvent enum todo
• Fix mrsv lint warnings
• Bump payjoin to version 1.0.0-rc.5
• Bump payjoin-cli version to 1.0.0-rc.0
• Cli cancel UX

PRs reviewed:

• Update opentelemetry to 0.32
• Pin bindings CI to the maintained lockfile
• Rename FFI builder errors to match payjoin crate
• Cli Refactor

Issues opened:

• Release payjoin-1.0.0
• Should we care about msrv lint warnings for 1.0?
• Release payjoin-1.0.0-rc.5
• Release payjoin-cli-1.0.0-rc.0

[benalleng]

Focus

• any reviews to keep the remaining 1.0 blockers moving
• working on the cake wallet upgrade.
  • I have the MVP ready for the receiver but want to get konstantin's feedback for some more wallet specific questions

Bottleneck

• I wish cake wallet had regtest so I could develop quicker

[spacebear21]

/check-in

[payjoin-bot]

Shipped

PRs merged:

• Update opentelemetry to 0.32

PRs reviewed:

• Pre-1.0 Doorkeeper for SessionOutcome in
• Allow standup without contributor list
• Delete .github/standup-contributors.yml
• Remove Receiver::SessionEvent enum todo
• Fix mrsv lint warnings
• Prepare release-ready C# NuGet package workflow
• Remove stale incompatible_msrv clippy allows
• Bump payjoin-cli version to 1.0.0-rc.0
• Add kind accessors to receive candidate errors
• Consume self in Monitor check_for_transaction

Auto-detected signals:

• PR awaiting review: Fix formatting in create_standup_discussion.py

[xstoicunicornx]

/check-in

[payjoin-bot]

Shipped

PRs merged:

• Remove stale incompatible_msrv clippy allows
• Cli Refactor

PRs reviewed:

• Update opentelemetry to 0.32
• Add core RelaySelector
• Bump payjoin-cli version to 1.0.0-rc.0
• Bump payjoin to version 1.0.0-rc.5
• Cli cancel UX

[xstoicunicornx]

Focus

• PR review

Bottleneck

None.

[Mshehu5]

Focus :
Address any issues on #1514

Bottleneck:
Feedback on PR description question will help