25 or 6 to 4 - Live in Japan 1972

Recording by Chicago.

Recording identifiers

ISRC
USRH10550601
CopyrightID (CopyrightChains transaction hash)
0x8782949c7420df9a7cd8b4b4712551aa40ac7515c6f437a94ac1374670aad036
Copyright registration time
2026-07-06T02:02:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T06:56:49Z
Bitcoin block
956889
Canonical record hash
sha256:8c3ca1e7345a89d793e2c8896d7d0d8df5b738134b2cd77dbc2574927fb52990

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

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.