Provenance Passport
Mao
Adam Chang, 2005
Passport ID
ab3abd77-4059-41c3-8607-eb1a2744bc1a
Entries
3
Chain Integrity
✓ Intact
Chain of Custody
Added to The Back Room
7/11/2026, 7:25:44 AM
hash: a207241ca1f300ea1009004883fe2d20710f934f649ef0f4b3d33f1da9d4c688
prev: — (genesis)
Gallery Sale
7/12/2026, 8:49:49 PM
hash: f318d4036483a6f380f41b634d0bb1a3ecba08e9087f9c4cc437d3b3041d8ae7
prev: a207241ca1f300ea1009004883fe2d20710f934f649ef0f4b3d33f1da9d4c688
Gallery Sale
7/22/2026, 4:40:54 AM
hash: 95f2bf0c0b8b40cc25d467c81726f1692918141b867f4663b3b18abbad952ef0
prev: f318d4036483a6f380f41b634d0bb1a3ecba08e9087f9c4cc437d3b3041d8ae7
Each entry above stores a cryptographic hash of the entry before it, forming an append-only chain — altering any past entry would break every hash after it. This is not a public blockchain; it's maintained privately by The Back Room and verified the same way: by recomputing each hash and confirming it matches.
The Back Room · backroom.art
Certificate of Provenance
Mao
Adam Chang, 2005
Passport ID
ab3abd77-4059-41c3…
Entries Recorded
3
Ledger Integrity
Verified Intact
Chain of Custody
| Added to The Back Room | 11 July 2026 |
| Gallery Sale | 12 July 2026 |
| Gallery Sale | 22 July 2026 |
This certificate attests that the chain of custody above is recorded on The Back Room's private, hash-chained provenance ledger and has been verified intact at time of printing.
Authorised Signatory
The Back Room
29 July 2026