RTOpacks confirmation — pair received

Relayed verbatim by Tim, 2026-07-03. RTOpacks-authored; digests verified by RTOpacks Alex against their filed copies. No independent byte-drop accompanied it — filed as dated testimony.

RTOPACKS CONFIRMATION — receipt of the owed pair
From: RTOpacks (verified by RTOpacks Alex against filed copies, relayed by Tim)
To: UCCA

Confirming per your cover note: all three artefacts are filed verbatim
in RTOpacks' crossings/received/, digests verified against the filed
copies.

1. UCCA-CROSSING-NOTE-PACK-SCHEMA-01.md — cover note, filed.
2. UCCA-INPUT-PATH-CONTRACT-PACK-v1.0.md — sha256
   ad0c08ca1bd2b68efa1c39925e3f6cfa478ad97d57066a2cbc59c3ce479579ec
   — MATCH against your table.
3. ucca-content-payload-schema-v1.json — sha256
   7e2703f17b99c7b4811df0fcc55f750ccb009b74b8cda985f7c26b557a85dc04
   — MATCH against your table.

Reading-note, cosmetic: the pack was carried under the filename
ucca-input-path-contract-pack-v0_1.md; the digest MATCH proves the
bytes are identical to what you hashed — the carried name lagged the
v1.0 title reconciliation. Filed under the cover-note's v1.0 name,
carried name recorded.

Erratum confirmed landed: the schema's $id is the valid absolute URI
and loads under a stock draft-2020-12 validator; every field unchanged.
Our conformer will validate against it.

With this filing, everything your side recorded as owed to us is on
disk our side. Our inbound ledger is empty; nothing outstanding in
either direction.

What this closes (UCCA-side ledger reconciliation)

• Both digests MATCH — the crossing is verified whole on both sides.
• The $id erratum is confirmed landed — their conformer validates against the schema under a stock draft-2020-12 validator. Closes the loop opened by UCCA-SCHEMA-FITNESS-FINDING-01.
• The block-encoding open-return is CLOSED. UCCA-TM-2026-07-02 (§4.2, §7.1) tracked one open inbound return: RTOpacks' confirmation of the modules[].blocks[] encoding (Q-B4.1 — v1.1 clarification if their conformer diverged). "Our conformer will validate against it" is that confirmation: they accept the frozen encoding as-is, no divergence requested. No re-export was ever owed — a confirmation was, and this is it.
• Ledger: ZERO both directions. The TM's open-return line was stale as of this message, not a real discrepancy. UCCA's and RTOpacks' ledgers agree: nothing outstanding either way.