GZ2 Notarial Certificate GitHub Release Backup

This page describes the GitHub Release backup mirror for the GZ2 redacted second-capture notarial-certificate photo archive.

Release

Tag:
core-object-alpha-notarial-certificate-gz2-custody-public-backup-v1

Source Arweave records

The source records are the Arweave TXIDs listed in:

/api/gz2-notarial-certificate-redacted-attachments-2026-05-14.json

Expected Release assets

gz2-notarial-certificate-redacted-attachments-2026-05-14.zip
gz2-notarial-certificate-redacted-attachments-2026-05-14-arweave-index.json
gz2-notarial-certificate-redacted-attachments-2026-05-14-timestamp-files.zip
sealed-disc-custody-record.json
gz2-notarial-certificate-redacted-attachments-2026-05-14-release-assets.sha256
gz2-notarial-certificate-redacted-attachments-2026-05-14-release-notes.md

Verification steps

  1. Download the Release assets.
  2. Verify Release asset hashes against the .sha256 file.
  3. Verify the Arweave TXIDs listed in the Arweave index.
  4. Verify that the GZ2 manifest and OTS proof are available from Arweave.
  5. Verify the OTS proof locally if a Bitcoin Core node is available, or record that local Bitcoin-node verification was not performed.
  6. Confirm that the sealed-disc custody record does not claim disc-content verification.

Boundary

This GitHub Release is a non-amending availability mirror.

It does not replace Arweave.

It does not replace the original 2026-05-06 evidence archive.

It does not claim equality between GZ2 images and original Cunzhengtong electronic files.

It does not claim verification of sealed-disc contents.