Provenance Passport
The Yellow Room - Diptich
George Gittoes, 2000
Passport ID
892a578a-ae96-4518-b4b6-162f161fff12
Entries
1
Chain Integrity
✓ Intact
Chain of Custody
Added to The Back Room
7/25/2026, 4:49:02 AM
hash: 7efeb1f30658fbcbe8faba5d85df03661f7a7b79f110edf8d01f81a8f2bef79c
prev: — (genesis)
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
The Yellow Room - Diptich
George Gittoes, 2000
Passport ID
892a578a-ae96-4518…
Entries Recorded
1
Ledger Integrity
Verified Intact
Chain of Custody
| Added to The Back Room | 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