Provenance Passport
After Goya's Manuel de Zuniga No. 2
Adam Nudelman, 2023
Passport ID
dcf17098-83cc-40c2-87e2-fbeadbb4658b
Entries
3
Chain Integrity
✓ Intact
Chain of Custody
Added to The Back Room
7/4/2026, 4:03:02 AM
hash: 7fd9eeedab577d745250753177a1f05d51cf237ff152c88efe96ee5876543baf
prev: — (genesis)
Gallery Sale
7/12/2026, 9:37:00 PM
hash: 228ae26a06e1d431263ba5b9505fc5bfe73b552177a9ff518b342a9608cf9087
prev: 7fd9eeedab577d745250753177a1f05d51cf237ff152c88efe96ee5876543baf
Gallery Sale
7/22/2026, 4:26:53 AM
hash: a51312ac4a29472b79944ec7c0de43a6768784f6cf6bf0092cec7644b6ea539a
prev: 228ae26a06e1d431263ba5b9505fc5bfe73b552177a9ff518b342a9608cf9087
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
After Goya's Manuel de Zuniga No. 2
Adam Nudelman, 2023
Passport ID
dcf17098-83cc-40c2…
Entries Recorded
3
Ledger Integrity
Verified Intact
Chain of Custody
| Added to The Back Room | 4 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