Provenance Passport
Jam Trees on fire, eastern wheatbelt 1/1
Andrew McDonald, 2023
Passport ID
f86e8d1b-e147-4441-8e04-00a813d07f22
Entries
3
Chain Integrity
✓ Intact
Chain of Custody
Added to The Back Room
7/4/2026, 6:24:43 AM
hash: 5dc632bb7ffc3abbc87fb510c5070a3f387bc8caffa4884dff4c64bbaf846903
prev: — (genesis)
Gallery Sale
7/25/2026, 5:29:49 AM
hash: 69254addd0ef2fd3eb7ac9c21ecc6da6ec43e1e0272c363e8929b627951f32bd
prev: 5dc632bb7ffc3abbc87fb510c5070a3f387bc8caffa4884dff4c64bbaf846903
BR Certified
7/25/2026, 7:01:16 AM
hash: 51d395b1fd5f445ef271910833a781f361a72f52002772aa82c0896d2e1a0f42
prev: 69254addd0ef2fd3eb7ac9c21ecc6da6ec43e1e0272c363e8929b627951f32bd
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
Jam Trees on fire, eastern wheatbelt 1/1
Andrew McDonald, 2023
Passport ID
f86e8d1b-e147-4441…
Entries Recorded
3
Ledger Integrity
Verified Intact
Chain of Custody
| Added to The Back Room | 4 July 2026 |
| Gallery Sale | 25 July 2026 |
| BR Certified | 25 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