Cygnus X-1 Book II: Hemispheres - Prelude - Live In YYZ 1981

Recording identifiers

ISRC

CAOA82100029

Release date of the album this recording appears on

2022-04-15

CopyrightID (CopyrightChains transaction hash)

0xc34a3df5ec24d468ba8d17ae43dffb155a6b81fe50de2716b7b13ca7a0bb9b0a

Copyright registration time

2026-06-18T12:25:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:d5fd2157e8681f9f7bfe9a42a83ff48fe35e89f8aca5bf4ff5f441c96cebadb7

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CAOA82100029

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.