Black Napkins - Live In Zagreb, November 21, 1975

Recording identifiers

ISRC

USUM72215141

Release date of the album this recording appears on

2022-10-14

CopyrightID (CopyrightChains transaction hash)

0xbcd9eb1f304cc61d1a439828054e541e9b71d4c89e031ee8a2f2b935b2a73ea2

Copyright registration time

2026-07-06T07:46:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T18:39:05Z

Bitcoin block

957073

Canonical record hash

sha256:78a542584099112752ca9790a7dc4e60323a74f80379d5c4f11859091a00a515

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USUM72215141

What this proof establishes

This recording was released in 2022. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.